Journal of
Environmental Chemistry and Ecotoxicology

  • Abbreviation: J. Environ. Chem. Ecotoxicol.
  • Language: English
  • ISSN: 2141-226X
  • DOI: 10.5897/JECE
  • Start Year: 2009

JECE Articles

March 2018

Arsenic concentration in rice grown from three local government areas of Kano, Nigeria

Arsenic (As) in food and water has been linked to cancers and other diseases. Rice is of interest because many types may contain higher contents of As than other foods of terrestrial origin. As concentrations in rice produced from three Local Government Areas of Kano State were determined using Atomic Absorption Spectrophotometer. The mean As concentrations were 0.369 ± 0.092, 0.293 ± 0.126, and 0.255...

Author(s): Amina Salihi Bayero, Aminu Umar and Isa Baba Koki  

February 2018

Degradation of perchlorate using green method: Mechanism and kinetic process

This work analyzes the degradation of toxic perchlorate from wastewater and its conversion to non-toxic chloride ion through nano-scale zero valent iron (nZVI) coating. To prevent its agglomeration and to provide the required stabilization and more removal efficiency, it was coated with various coating agents which are co-friendly (green agents) and inexpensive. At first, nZVI was synthesized using green method....

Author(s): Azam Ghavi and Ali Reza Zarei  

December 2017

Sorption mechanisms of Chromium(III), Copper(II) and Lead(II) on two natural mixed clays from Burkina Faso as determined by extended X-ray absorption fine structure (EXAFS) spectroscopy

Chromium(III), copper(II) and lead(II) are among the heavy metals produced and released in large amounts by anthropogenic sources worldwide, including Burkina Faso. Previous studies have demonstrated the successful application of domestic natural mixed clays for the removal of these metal ions as a cheap and environmentally friendly method. Qualitative mineralogical characterization of the clays revealed that they...

Author(s): Samuel Pare and Ingmar Persson

November 2017

Seasonal variation of elemental, physicochemical and microbiological characteristics of the stream water around hospital waste dumpsite in Ilesa, South-western Nigeria

This study assessed the seasonal variation of microbiological, physicochemical and heavy metal analysis of water samples from Ayao Stream around a hospital waste dumpsite. Four samples were collected downstream and analyzed for microbial count, coliforms, pH, electrical conductivity, BOD5, alkalinity, total dissolved solids, water hardness, sulphate, nitrate, chloride and phosphate using standard method. Heavy metals...

Author(s): O. T. Fakoya, E. A. Oluyemi, I. O. Olabanji and C. N. Fakorede

October 2017

Evaluation of the physicochemical and heavy metal content of ground water sources in Bantaji and Rafin-Kada settlements of Wukari Local Government Area, Taraba State, Nigeria

Boreholes and hand dug wells from Bantaji and Rafin-Kada settlements of Wukari L.G.A. were analyzed for fourteen physicochemical parameters and seven heavy metals collected within July, 2015 to March, 2016 using standard methods. The mean difference in concentration of dissolved oxygen between the wet and dry seasons in the Bantaji boreholes was statistically significant at p<0.05. In addition, the electrical...

Author(s): Odiba John Oko, Matthew Olaleke Aremu and Chrysanthus Andrew

September 2017

Effects of oil and gas exploration and production activities on production and management of seafood in Akwa Ibom State, Nigeria

The current daily crude oil production in Nigeria stands at about 2.0 million barrels per day thus placing Nigeria as the 6th largest oil producing country in the world. Volumes of petroleum and its production wastes streams find their way into the inland waters and oceans. Seafood is any form of sea life regarded as food by humans including edible sea seaweeds and microalgae widely eaten as seafood, especially in Asia....

Author(s): Udotong J. I. R., Udoudo U. P. and Udotong I. R.

June 2017

Evaluation of heavy metals in the soils of Karaikudi Town in India

The Central Electro-Chemical Research Institute in India has a department that specializes in the design of both lead and nickel-chromium batteries. However, the laboratories activities have brought soils contamination of this department. This work involves assessing the presence of heavy metals such as lead, nickel and chromium in contaminated soils in the Center through the single and sequential extraction methods....

Author(s): BODJONA Bassaï Magnoudéwa, RAMESH Babu B. and TCHEGUENI Sanonka

March 2017

Accumulation of heavy metals on bed sediments of Nairobi dam, Kenya

Globally heavy metals pollutants in aquatic systems are increasing and creating major ecological disturbance(s) and direct health problems. The study on accumulation of Copper (Cu), Cadmium (Cd), Lead (Pb) and Nickel (Ni) on the bottom surface sediments of Nairobi dam was conducted between November 2012 to April 2013. Seven sampling sites were selected within the dam and sediment samples were collected once in a month...

Author(s): Ndeda, L. A., Manohar, S. and Macharia, G. M.

November 2016

Waste degradation and leachate quality on composting platform: A case study in Lome, Togo

Chemical or organic compounds released during the waste composting could be harmful to the environment. The purpose of this work is to investigate the stability indices of organic matter after the lixiviation runs on composting platforms. The results showed that the organic matter became resistant to biodegradation after 2 months of wastes composting, that the nitrates content decreased, while the phosphorus one...

Author(s): Edem K. Koledzi, Martin P. Aina, Kwamivi N. Segbeaya, Maglwa Tcha-Thom, Gnon Baba, and James T. Agbebavi

September 2016

Identification and quantification of phthalates in water and sediment of Ori Stream, Iwo, Southwestern Nigeria using high performance liquid chromatography

This study provides data on distribution of phthalate esters (PAEs) in the water and sediments in the Ori stream, Iwo, Nigeria. The liquid-liquid extraction method was employed, followed by cleaned up in an alumina column using hexane. Chromatographic separation and quantification were done using Zorbax Eclipse AAA C18 analytical column. The concentrations of DMP, DBP, DEP, and DPP in water (µg/L) ranged from...

Author(s): Godwin O. Olutona and Modupe O. Dawodu

August 2016

Sulphur and heavy metals contents in soils and Grewia bicolor leaves around the Selibe Pikwe Cu-Ni mine (BCL), Botswana

This study investigated environmental pollution due to mining activities at the BCL mine in Selibe-Phikwe town, Botswana and assessed the level of heavy metals and sulphur in soil and Grewia bicolor leaves adjacent to the mine. Soil and G. bicolor were contaminated with heavy metals on the downwind side, where also concentrations of sulphur in the soil and G. bicolor were found to be elevated when compared to the upwind...

Author(s): Moagi Letshwenyo

July 2016

Determination of bisphenol A in exposed bottled water samples to direct sun light using multi walled carbon nanotubes as solid phase extraction sorbent

Polycarbonate plastics (PC) containing bisphenol A (BPA) are used for the production of bottles   for storage drinking water. Trace amounts of BPA have been detected in ten different brands of bottled water samples from Khartoum supermarkets. Residues of BPA in bottled water were pre-concentrated using solid-phase extraction and determined by high performance liquid chromatography with fluorescence detector....

Author(s): Leena Omer, Hassn Ahmed and Abdalla Elbashir

July 2016

Heavy metals and metalloid accumulation in livers and kidneys of wild rats around gold-mining communities in Tarkwa, Ghana

Previous studies revealed high levels of metals in soils, drinking water, foodstuffs and food animals in several communities in Tarkwa, Ghana. Therefore wild rats were trapped from 16 communities in Tarkwa to estimate the environmental pollution state of metals; determine differences in sex in metal accumulation; and assess the potential risks involved. Concentrations of arsenic (As), cadmium (Cd), cobalt (Co), chromium...

Author(s): Nesta Bortey-Sam, Shouta M. M. Nakayama, Yoshinori Ikenaka, Osei Akoto, Elvis Baidoo, Hazuki Mizukawa and Mayumi Ishizuka

July 2016

Study on the effectiveness of five cleaning solutions in removing chlorpyrifos residues in cauliflower (Brassica oleracea)

Nowadays, contents of pesticide residues in vegetables had become one of the hot topics closely related to human health. In order to investigate the effectiveness of several cleaning solutions in removing pesticide residues in vegetables, a polluted cauliflower was washed using five types of cleaning solutions which were soda-salt solution, vinegar solution, tamarind juice solution, filtered flour solution, and tap...

Author(s): M. F. M. Nowowi, M. A. M. Ishak, K. Ismail and S. R. Zakaria

June 2016

Physico-chemical characterization of tannery effluent and its impact on the nearby river

A study was conducted to characterize Modjo tannery effluent (wastewater) and determine its impact on the Modjo River using some physicochemical parameters. Accordingly, three tannery wastewater samples along wastewater channel at different distances have been taken and three river water samples (one upstream and two downstream) were collected along the river to determine its impact on the river. The samples have been...

Author(s): Amanial Haile Reda

May 2016

Determination of heavy metal concentration in Neem (Azadirachta indica) leaves, bark and soil along some major roads in Lafia, Nasarawa State Nigeria

Soil, vegetation and atmospheric pollution have been a serious problem in recent years in Lafia, especially among the communities living along the major highways due to increase in industrialization and vehicular movements. The level of heavy metals (Cd, Cr, Ni, Pb and Zn) in Neem tree leaves, bark and soil along major roads in Lafia were determined using digestion and atomic absorption spectrophotometer methods. The...

Author(s): A. U. Augustine, J. C. Onwuka and C. Q. Albert

April 2016

Effect of Dichlorvos on Reproductive Performance of Laying hens

The effect of dichlorvos on reproductive performance of laying hens was studied. Seven weeks old pullets with an average weight of 557.5 ± 9.5 g were divided into four groups and fed ad libitum with commercial poultry feeds contaminated with 0.01, 0.02 and 0.04% dichlorvos (w/v). The group without dichlorvos served as the control. Exposure to dichlorvos was continued until nine weeks after the hens started laying...

Author(s): Ethelbert Uchechukwu Ezeji, Angela Chika Udebuani, Josephath Okereke, Sylvia Anyadoh-Nwadike, Ikechukwu N. E. Onwurah and Kalu Obasi

March 2016

Quantification of pharmaceutical residues in wastewater impacted surface waters and sewage sludge from Lagos, Nigeria

Information on the occurrence of pharmaceuticals in the environment of Nigeria is limited, only a single publication previously on pharmaceutical occurrence in the environment of Nigeria, which measured general estrogen levels in Enugu, South-East Nigeria. In order to establish a first overview, surface water samples from six locations as well as ten sewage sludge samples from waste water treatment plants were analysed...

Author(s): Oluwatosin Olarinmoye, Adekunle Bakare, Obih Ugwumba and Arne Hein

March 2016

Sensitivity, ecotoxicity and histopathological effects on neotropical fish exposed to glyphosate alone and associated to surfactant

The aim of this research was to evaluate neotropical fish sensitivity (Piaractus mesopotamicus, Phallocerus caudimaculatus, Hyphessobrycon eques, and Brachydanio rerio) to a reference substance (potassium chloride); to estimate the lethal concentration (LC50; 96 h) for glyphosate, formulated as Rodeo® alone and in association with 0.5 and 1.0% Aterbane® BR surfactant and to evaluate the histopathology of the...

Author(s): Claudinei da Cruz, Silvia Patrícia Carraschi, Natália Sayuri Shiogiri, Adilson Ferreira da Silva, Robinson Antonio Pitelli and Marcia Rita Fernandes Machado

February 2016

Physicochemical properties of the effluents of Forcados Terminal in Warri, Delta State

Physicochemical properties of the effluent samples from Forcados Terminal in Warri, Delta State were studied from May 2008 to June 2009. Effluent samples were collected from the two Barge Jetties A and B and Two Saver Pits 1 and 2 inside the tank farm. A total of 96 effluent samples were collected throughout the study period. Physicochemical properties of the effluent samples were determined using Hach methods as...

Author(s): Amaku Grace Ebele and Akani Nedie Patience

January 2016

Distribution of trace metals in surface water and sediments of Imo River Estuary (Nigeria): Health risk assessment, seasonal and physicochemical variability

The distribution of trace metals (Zn, Cu, Ni, Mn, Fe, Co, V, Pb and Cd) in surface water and sediments from Imo River estuary in relation with the physicochemical variables were studied for both dry and wet seasons. The results obtained revealed that trace metal levels displayed marked spatial and seasonal variations in surface water and sediments, which is attributed to both anthropogenic natural processes in the...

Author(s): Essien D. Udosen, Nnanake-Abasi O. Offiong, Samuel Edem and John B. Edet

December 2015

Assesement of the quality of leachate at Sarbah landfill site at Weija in Accra

Physico-chemical and bacteriological characteristics of Sarbah dump site at Weija, Accra were investigated to ascertain the leachate quality for possible treatment. The leachate was observed to be alkaline in nature and had high concentration of the following biological oxygen demand (BOD), chemical oxygen damand (COD) and oil and grease. Samples of leachate were collected from different sites close to the landfill. On...

Author(s): Lyndon Nii Adjiri Sackey and Kojo Meizah

October 2015

Studies on contamination of surface waters of river Benue with trace elements at Makurdi, Benue State, Nigeria

The concentration of trace metals were determined in the world of waters River Benue within Makurdi Metropolitan area using atomic absorption spectrophotometer for two seasons. The mean concentration of the heavy metals Pb, Ni, Cu, Cr, Cd and Al obtained in mg/L were 0.42, 0.39, 0.35, 1.58, 0.19 and 0.04 respectively. There was no significant difference in the concentration of heavy metals across the studied stations...

Author(s): Akaahan T. J. A., Olabanji F. M. and Azua E. T.

September 2015

Surface water contamination in Halsi Nala; an assessment and spatial distribution survey using geographical information systems (GIS) approach

Present study was designed to assess the fate, occurrence, spatial and temporal distribution of anthropogenic contaminants in water of Halsi Nala, a major tributary to River Chenab, subjected to different pressures (industrial, agricultural, domestic waste water discharges). As the studied water basin runs through several residential, agricultural and industrial areas, so its water quality affected along its course....

Author(s): Iqra Azam, Sumera Afsheen, Ahmad Zia, Muhammad Kaleem Sarwar and Tahir Iqbal

April 2015

Ecotoxicology of drugs used in fish disease treatment

The fish Hyphessobrycon eques and Piaractus mesopotamicus, the snail Pomacea canaliculata, the aquatic plant Lemna minor and the microcustacean Daphnia magna were selected to evaluate the lethal or effective concentration (LC50/EC50) and the environmental risk of florfenicol (FLO), enrofloxacine (ENR), thiamethoxan (TH) and toltrazuril (TOL). For this, the organisms were acclimated in a bioassay room under controlled...

Author(s): Silvia Patrícia Carraschi, Taise Florêncio, Nathália Garlich, Adilson Ferreira da Silva, Aline Marcari Marques, Claudinei da Cruz and Maria José Tavares Ranzani Paiva

February 2015

Distribution and ecological risk assessment of pesticide residues in surface water, sediment and fish from Ogbesse River, Edo State, Nigeria

The contamination of pesticides in water, sediments, Clarias gariepinus, and Tilapia zilli from Ogbesse River was investigated to evaluate the pollution status and potential hazard in river system. A total of sixteen pesticides were analyzed using Gas Chromatography (GC) equipped with Electron Capture Detector (GC-ECD). The concentration of pesticide residues ranged from ND to 0.43 µg/l for water samples, 0.82 to...

Author(s): Ezemonye Lawrence, Ogbeide Ozekeke and Tongo Isioma

January 2015

Nondestructive analysis of dumpsite soil and vegetable for elemental composition

In this study, dumpsite soils and vegetables were analyzed for total elemental composition using a 5SDH Tandem Pelletron accelerator available at Centre for Energy Research and Development, Obafemi Awolowo University Ile-Ife. The results at a 2.5 MeV energy revealed the presence of elements: Cu, Cr, Ni,Al, Si, P, S,Cl, K, Ca, Ti, Mn, Fe, Zn, Rb, Sr, Y, Zr  and Pb in the dump site soil, with the exception of...

Author(s): Olabanji I. O. , Oluyemi E. A. and Obianjuwa Eusebius I.

January 2015

Heavy metal bioaccumulation and oxidative stress in Austroaeschna inermis (Dragon fly) of the Lagos Urban ecosystem

Urban ecosystems are often characterized by the receipt of pollutants, especially heavy metals from diverse anthropogenic activities. To better understand the distribution of heavy metals (Cd, Cu, Pb, Mn and Zn), Austroaeschna inermis from five different sites (Unilag, Mile 12, Olushosun Dump site, Imoshe and Badagry) in Lagos, sediments from the respective sites were assessed. This was followed by assessment of lipid...

Author(s): Nwaubani Blessing Ihechiluru, Amaeze Nnamdi Henry and Idowu Emmanuel Taiwo

July 2014

Pollutant mixtures as stressors of selected enzyme activities of the aquatic snail Helisoma duryi

This study involves an investigation on the effects of a pesticide, metal and a detergent as individual and mixtures on esterase and antioxidant enzyme activity of the freshwater snail Helisoma duryi. Adult snails were exposed to sublethal concentrations of copper (5 µg/L), industrial detergent, oxyfoam (15 µg/L), carbaryl (25 µg/L) as well as mixtures of these pollutants for 96 hours. Carboxylesterase...

Author(s): Norah Basopo, Langton T. Mumbamarwo, Dumisani Mnkandla and Yogeshkumar S. Naik

June 2014

Determination of pharmaceutical compounds in surface and underground water by solid phase extraction-liquid chromatography

A solid-phase extraction (SPE) followed by high performance liquid chromatography method was used for extraction and analysis of 4 pharmaceutical residues (Diclofenac, Chloroquine, Paracetamol and Ciprofloxacine HCl) in environmental water samples. This method was successfully applied to environmental water samples from Sango-Ota, a high industrial community in Ogun State, Nigeria, for the determination of the targeted...

Author(s): Olatunde James Olaitan, , Chimezie Anyakora, Tolulope Bamiro and Aminat Temitope Tella

April 2014

Temporal variation of SO2 and NO2 concentrations around Parichha Thermal Power Plant, India

The present study was based on monthly variation of ambient air pollution in the village located within a radius of 3 km from the Parichhna thermal power plant (Jhansi, India). Parichha thermal power plant consumes annually 3.4 million tons of coal and the annual production capacity of the plant is 2.78 billion KWh. The thermal power plant uses approximately 10,000 tons of coal and emits large amount of air pollutants...

Author(s): Sayar Yaseen, Bhat Mohd Skinder, Sheeraz Ahmad and R.S. Khoiyangbam

April 2014

Bioaccumulation of some trace element (Zn, Fe, Pb and Cu) in the gills and tissues of Clarias gariepinus and Oreochromis niloticus in River Ogbese, Ondo State, Nigeria

River Ogbese support many human activities (domestic, agricultural, fishing, industrial activities) leading to its extensive contamination and accumulation of heavy metals which can cause both environmental and public health hazard. In order to ascertain the quality of the river, a study was carried out to determine some trace element concentration (Zn, Fe, Pb and Cu) in gills and tissues of Clarias gariepinus and...

Author(s): Olawusi-Peters, O. O., Ayo-Olalusi, C. I. and Adeyemi T. V.

March 2014

Carbamate pesticide residues analysis of potato tuber samples using high-performance liquid chromatography (HPLC)

  Monitoring of pesticides is conducted globally to assess the environmental load of their residues. However, carbamate pesticides are among the most common used pesticides in potato protection in Egypt. Here, nine potato tuber samples were randomly collected from Assiut, Elminia, Kalubia, Cairo, and Giza cities in Egypt to detect the contamination of some carbamate residues using quick, easy, cheap,...

Author(s): Mohamed Ahmed Ibrahim Ahmed, Nasr Sobhy Khalil and Tarek Abd Elaliem Abd El Rahman

December 2013

Application of solid phase extraction (SPE) method in determining polycyclic aromatic hydrocarbons (PAHs) in river water samples

Trace levels of PAH pollutants are difficult to detect in water samples due to their low solubility. During this study, SPE method was used to improve the detection of the PAH analytes. A Visipre SPE vacuum manifolds sample preparation method was used to clean-up the river water samples before analysis. Twelve samples were simultaneously extracted via the unit. This method is generally faster and significantly increases...

Author(s): Shadung J. Moja and Fanyana Mtunzi

December 2013

Aqua regia and ethylenediaminetetracetic acid (EDTA) trace metal levels in agricultural soil

Soil samples were collected from irrigation farmlands along the bank of Mada River and analysed for aqua regia and ethylenediaminetetracetic acid (EDTA) extractable trace metal (Cd, Cr, Cu, Pb, Zn Ni, Fe and Mn) concentrations. Water samples at source were also collected for analysis. Metal levels were quantified using atomic absorption spectrometry (AAS). Aqua regia and EDTA extractable Fe and Cd concentrations were...

Author(s): B. W. Tukura, N. L. Usman and H. B. Mohammed

December 2013

Determination of total petroleum hydrocarbon in soil and groundwater samples in some communities in Rivers State, Nigeria

The determinations of total petroleum hydrocarbon in soil and groundwater samples were studied at five communities in Rivers State, Nigeria. The result of the analysis indicates that soil samples obtained from Station A at various depths of 1.0 -2.0 m, 3.0 - 4.0 m and 4.0 - 5.0 m were contaminated with Total petroleum hydrocarbon (TPH) of concentrations 1320.00, 1516.66 and 1063.16 mg/kg, respectively. The result also...

Author(s): Alinnor I. J. and Nwachukwu M. A.

December 2013

Evaluation of heavy metals in soils around auto mechanic workshop clusters in Gboko and Makurdi, Central Nigeria

The concentration levels of selected heavy metals (Cd, Cu, Mn, Ni, Pb and Zn) in soils around two major auto mechanic workshop clusters in Benue State, Central Nigeria was investigated to ascertain the possible environmental impact of these clusters. Results of the atomic absorption spectrophotometric (AAS) analysis of samples of the soils revealed that for the majority of heavy metals, the concentrations in the soils...

Author(s): Aloysius A. Pam, Rufus Sha’Ato and John O. Offem

November 2013

Cleaning wastewater of wet scrubber in secondary lead smelters using cationic polyacrylamide

This study shows the benefits of using high molecular weight cationic polyacrylamide (PAM) in the purification of wastewater discharged from a wet scrubber in secondary lead smelter for reuse. The effect of temperature, pH, filtration pressure, polymer dose and different types of filtration fabrics on filtration rate (¦x), efficiency (¦ε) and quality of the produced water for recycling have been...

Author(s): Mahmoud A. Rabah

November 2013

Is roadside grass suitable for use as livestock forage in Botswana?

The aim of this research was to assess the suitability of roadside grass for use as livestock feed to combat lack of forage resources in Botswana. Fifty grass samples were collected along the roadside in the A1 Highway corridor running between the Ramatlabama and Ramokgwebana border gates (629 Km), and analysed for Ni, Cu, Pb, Zn and Cd. The maximum content levels detected in grass samples for Ni, Cu, Pb, Zn and Cd were...

Author(s): Samuel Mosweu and Moagi Letshwenyo

November 2013

Impact of pesticide use on the health of farmers: A study in Barak valley, Assam (India)

A study was carried out in the three districts of Barak valley (Cachar, Karimganj and Hailakandi) Assam, India to ascertain the variety of pesticides that are used in the agriculture sector and their probable impact on the health of farmers. The study revealed that the farmers often use pesticides ranging from high to extremely hazardous categories like Organochlorides, Organophosphates and Carbamates. Various signs and...

Author(s): K. R. Dey, P. Choudhury and B. K. Dutta

September 2013

Seasonal variations in airborne heavy metals in Vanderbijlpark, South Africa

  In this study, monthly settleable dust samples were collected in four seasons using the modified crude single open bucket units at five sites within the Vanderbijlpark area. The samples were captured in distilled water medium, filtered, air-dried, weighed to determine mass concentrations, digested with aqua regia acid solution and analyzed for heavy metals by inductively coupled plasma (ICP) 6000...

Author(s):   S. J. Moja and J. S. Mnisi        

September 2013

Comparative study of the acute toxicity of petroleum sludge on fresh and brackish water shrimp

  The ecological impact of petroleum sludge on fresh water shrimp (Desmoscaris trispinosa) and brackish water shrimp (Palaemonetes africanus) in the Niger Delta area was compared using the Organization of Economic Co-operation and Development (OECD) No. 218 protocol for sediment toxicity test. The shrimp were exposed to sediments treated with petroleum sludge at concentrations of 625, 1250,...

Author(s):   Tudararo-aherobo L. E., Atuanya E. I., Olomukoro J. O. and Ogeleka D. F.      

September 2013

Organochlorine pesticide residue levels in river water and sediment from cocoa-producing areas of Ondo State central senatorial district, Nigeria

  The health risks posed by organochlorine compounds to the total environment have continued to elicit concern among researchers worldwide. Hence, this study focused on investigating the varieties and concentrations of organochlorine pesticide residues in river water and sediments from cocoa-producing areas in Ondo Central Senatorial District of Nigeria. The organochlorine pesticides extracted with a mixture of...

Author(s):   Idowu G. A., Aiyesanmi A. F. and Owolabi B. J.        

August 2013

Study on universal cleaning solution in removing blended pesticide residues in Chinese cabbage

  Food safety problems caused by pesticide residues in vegetables have become one of the top issues of public interest. In order to find an effective method of removing pesticide residues in vegetables, Chinese cabbages were processed as simulated pesticide pollution using three types of pesticides, namely; organophosphorus pesticide, organochlorine pesticide and pyrethroid pesticides. The polluted Chinese...

Author(s): ZHANG Yu-shan, LI Xiao-peng, LIU Hong-mei, ZHANG Yao-kun, ZHAO Fan-fei, YU Qin-jie, LI Hao and CHEN Jian-wen

August 2013

Acute toxicity of Lepidagathis alopecuriodes (Vahl) to Heterobranchus bidorsalis fingerlings

  The acute toxicity of L. alopecuriodes to H. bidorsalis fingerlings of mean body weight, 1.99  0.38g and total length 6.32  0.93cm was assessed in a renewal bioassay for 96 h. Five graded concentrations of L. alopecuriodes were prepared as 0.5, 1.0, 1.5, 2.0 and 2.25mg/L and a control experiment (0.00 mg/L).  There were no significant variations observed in the water...

Author(s): Okey, I. B., Gabriel, U. U.  and Keremah, R. I. 

August 2013

Determination of heavy metal contents in some industrial effluents from Ondo State, Nigeria

  Industrial effluents were collected from JOF Ideal Farm, Owo, an industry producing soya beans vegetable oil;  Stanmark Cocoa Processing Company, Ondo; King’s Cool, Ondo Plastic Industry Limited (OPIL), Akure; Benkaof Bottling Company, Akure and TISCO Company, Akure, producing disinfectants, dettols and methylated spirit. The effluents collected were kept in polyethylene bottles and labelled as E1,...

Author(s): OGUNLEYE, Idowu Oluwatosin and IZUAGIE, Anthony A.

August 2013

Development of method for residue analysis of three herbicides in the soil by high performance liquid chromatography (HPLC)

  Contamination of soil and water resources by herbicides is an increasing environmental concern. Soil plays an important role in agro-ecosystem and the environment, but information for analysis of herbicides residue in the soil can be very difficult to come by. Laboratory experiment was conducted to simplify analytical methods of the residue of paraquat, glyphosate, and glufosinate-ammonium in soil through...

Author(s): Wahyu Wibawa

July 2013

Influence of starch addition on properties of urea formaldehyde/starch copolymer blends for application as a binder in the coating industry

  Urea formaldehyde resin was reactively blended with various concentrations (10 to 70%) of cassava starch in order to develop a paint binder for emulsion paint formulation. Some physical properties and formaldehyde emission of the blended resin were investigated. Viscosity initially decreased before a gradual increase was noted with increase in starch concentration. Refractive index and elongation at break...

Author(s): S. A. Osemeahon, O. N. Maitera, A. J. Hotton and B. J. Dimas

July 2013

Determination of trace metals in sediment samples of the Santa Bárbara Channel / Pelotas / RS / Brazil

  This work deals with the determination of heavy metals (Pb, Cr, Zn and Cu) in the sediment of Santa Barbara Channel, located in Pelotas, RS. Absence of studies of the levels of heavy metals, in this channel, associated with high toxicity, bioconcentration and biomagnification capacity of these analytes makes this work necessary and explains the validity of this study. Two grams of fraction (< 63 μm) of...

Author(s): Pedro José Sanches Filho, Glauco Rasmussen Betemps, Adriana Possas Mesenburg and Patrícia Alfonso

July 2013

Fate of some heavy metals in the composting of the urban solid waste produced in Lome,Togo

  The aim of the present work is to assess the balance of some heavy metals during the composting of urban waste in Lome. Heavy metals constitute problems in waste management because of their multiple sources and their potentially high toxicity. Wastes were sieved to eliminate the fine fraction and set in windrows for composting and after maturation the sieved-compost was chemically characterized. The fraction...

Author(s): Edem K. Koledzi, Gnon Baba, Sanonka Tchegueni, K. N. Segbeaya, Moursalou Koriko, Guy Matejka and Gado Tchangbedji

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