Abstract：
:The levels and bioaccumulation of organochlorine pesticides (OCPs) and heavy metals were studied in muscle and liver of three fish species, with two trophic levels, from Lake Awassa, Ethiopia. DDTs were the predominant organic pollutant in all species with a maximum level of 73.28 ng g(-1) wet weight (ww). p,p'-DDE was the predominate congener and showed a significant (p<0.001) relationship with δ(15)N, which indicates that DDTs could biomagnified in the food web of the lake. Generally, high levels of heavy metals (Cd, Co, Cr, Cu, Ni, Pb, Zn and Hg) were found in liver samples as compared to muscles. The levels of Cd, Co, Cu, Ni, and Pb in liver samples showed negative correlation with δ(15)N. They were found markedly higher in the lower trophic level fish species (p<0.05) that indicates biodilution whereas; Zn level showed positive correlation with δ(15)N.
journal_name
Chemospherejournal_title
Chemosphereauthors
Yohannes YB,Ikenaka Y,Nakayama SM,Saengtienchai A,Watanabe K,Ishizuka Mdoi
10.1016/j.chemosphere.2013.01.047subject
Has Abstractpub_date
2013-05-01 00:00:00pages
857-63issue
6eissn
0045-6535issn
1879-1298pii
S0045-6535(13)00141-0journal_volume
91pub_type
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