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Twenty-nine conifer needles in mountain-valley areas from the southeastern Tibet were collected with altitude span from 1520 to 4340m above sea level (m.a.s.l.). They were analyzed for organochlorine pesticides (OCPs), including hexachlorocyclohexanes (α-, β-, γ- and δ-HCH), dichlorodiphenyltrichloroethane (p,p′-DDE, p,p′-DDD, o,p′-DDT and p,p′-DDT) and hexachlorobenzene (HCB). Concentrations of OCPs...
Organochlorine pesticides and heavy metals were analyzed in fish from remote mountain lakes and Lhasa River in Tibetan Plateau. Concentrations of ∑HCH, ∑DDT and HCB in fish muscles were in the range of 0.13–2.6 ng/g, 0.78–23 ng/g, 0.31–3.2 ng/g based on wet weight, respectively. Heavy metals were routinely found with different levels in fish. The Cu and Zn levels were relatively high with the maximum...
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