Affiliations: State Key Laboratory of Environmental Chemistry and
Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy
of Sciences, Beijing 100085, China
Abstract: The concentration of organochlorine pesticides (OCPs) in tissues and
organs of silver carp (Hypophthalmichthys molitrix) from Guanting Reservoir
were investigated to evaluate the pollution potential and distribution of OCPs.
A total of 16 OCPs were measured and the concentrations were in the range of
1.61–69.01 ng/g wet weight (ww) for total OCPs, 0.16–0.75 ng/g ww
for HCB, 0.75–26.80 ng/g ww for ΣHCH (sum of α-,
β-, γ- and δ-HCH) and 0.68–35.94 ng/g
ww for ΣDDT (sum of p, p'-DDE, p, p'-DDD, o, p'-DDT and p,
p'-DDT). The mean concentrations of total OCPs, HCB, ΣHCH, and
ΣDDT were 18.04, 0.96, 7.14 and 9.28 ng/g ww, respectively. Among
the organochlorine pesticides, β-HCH and p, p'-DDE were the most
dominant compounds in tissue and organ with the average concentrations of 4.42
and 8.14 ng/g, respectively. The results obtained in this study show that the
levels of 16 OCP residues found in silver carps are low and pose no threat to
human health and wildlife fed upon them on the basis of existing related
quality guidelines. However, recent input of lindane and DDT might still exist
in the area investigated and further investigation should be carried on.
