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Enrichment of
Pb, Hg and Cr in cultured carp otolith
Dongni Ren, Yonghua Gao and Qingling
Feng*
Laboratory of Advanced Materials, Department of Material
Science and Engineering, Tsinghua University, Beijing
100084, People’s Republic of China.
*Corresponding author. E-mail:
biomater@mail.tsinghua.edu.cn. Tel: 86 10 62782770. Fax:
86 10 62771160.
Accepted 28 December, 2011 |
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Fish otolith is a good recorder of water environment in
which the fish lived. In order to identify the elements in
otolith that are sensitive to environment and their
enrichment rules, lab-culture experiments of carps were
carried out. Pb, Hg and Cr were added separately into tanks
in which the carps lived, and the tanks were named as Pb
tank, Hg tank and Cr tank, respectively. Inductively coupled
plasma mass spectrometer (ICP-MS) was used for measuring the
concentrations of Pb, Hg and Cr in otolith and water. ICP-MS
results of otoliths showed that the average, median,
quartile and extreme values of Pb, Cr concentrations in
otoliths obtained from Pb and Cr tanks are comparably higher
than those obtained from other tanks. It showed that Pb and
Cr in carp otoliths could respond to environment change as
environment response sensitive elements can also be suitable
for monitoring water pollution.
Key words:
Otolith, inductively coupled plasma mass spectrometer (ICP-MS),
heavy metal elements. |
