Abbreviation: J. Environ. Chem. Ecotoxicol.
Start Year: 2009
Page 1 of 9, showing 20 records out of 163 total, starting on record 1, ending on 20
DOI: 10.5897/JECE2016.0377[Article Number: 462169660659]
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... Read more.
DOI: 10.5897/JECE2013.0306[Article Number: EBD792260027]
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... Read more.
DOI: 10.5897/JECE2015.0363[Article Number: 40585B759385]
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.... Read more.
DOI: 10.5897/JECE2016.0374[Article Number: D44277B59394]
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... Read more.
DOI: 10.5897/JECE2015.0370[Article Number: 4C4879459401]
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... Read more.
DOI: 10.5897/JECE2015.0365[Article Number: 3EADCAD58818]
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... Read more.
DOI: 10.5897/JECE2016.0371[Article Number: 830F86158535]
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... Read more.
DOI: 10.5897/JECE2015.0354[Article Number: 27E8F3357978]
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... Read more.
DOI: 10.5897/JECE2015.0364[Article Number: 083D7EF57805]
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... Read more.
DOI: 10.5897/JECE2015.0362[Article Number: 29BD0C957807]
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... Read more.
DOI: 10.5897/JECE2015.0368 [Article Number: 372EF1857453]
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... Read more.
DOI: 10.5897/JECE2015.0352 [Article Number: 79C605057157]
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... Read more.
DOI: 10.5897/JECE2015.0355[Article Number: 8BAFA4D56643]
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... Read more.
DOI: 10.5897/JECE. 2015. 0358[Article Number: 4F136F255721]
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... Read more.
DOI: 10.5897/JECE2015.0359[Article Number: 1B9CDB455457]
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.... Read more.
DOI: 10.5897/JECE2015.0341[Article Number: 2549AF852613]
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... Read more.
DOI: 10.5897/JECE2014.0337[Article Number: B965A2850780]
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... Read more.
DOI: 10.5897/JECE2014.0335[Article Number: 544E40749769]
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... Read more.
DOI: 10.5897/JECE2014.0336[Article Number: 8F32D5D49770]
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... Read more.
DOI: 10.5897/JECE2013.0319[Article Number: 339BD3346180]
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... Read more.
Page 1 of 9, showing 20 records out of 163 total, starting on record 1, ending on 20