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By using the PAGE (Poly Acrylamide Gel Electrophoresis), the effect of water-borne Cu2+ on the isozymes in gills of E. sinensis was studied. The experimental groups were treated with different concentration of Cu2+ as 0.01, 0.10, 1.00, and 5.00 mg/l, respectively. The results showed that different isozymes had specific responses. The activity of LDH and MDH decreased gradually along with the increasing...
Five elements (iron, manganese, copper, zinc and lead) in three surficial sediments (SSs) and three natural surface coating samples (NSCSs) from the Songhua River, northeast of China were analyzed with the modified sequential extraction procedure (MSEP) to compare the metal distribution and bioavailability in the two solid phases. The results indicated that Cu was present mainly in the bound to organic...
Taking the main pollution source of sewage river in north China as study object, concentrations of ammonia, chemical oxygen demand and heavy metals in sources of pollution and nearby water are determined. The two dimension steady river water quality models of ammonia and chemical oxygen demand are established, and the geometric characteristics of pollutant zone at downstream of the pollution source...
Heavy metals, a kind of persistent toxic substance (PTS), were taken for the study in this paper. Dust samples (44 in total) were collected in 2006 in Shanghai urban parks. The concentrations of Cu, Pb and Zn in dusts were determined by atomic absorption spectrometer. The concentrations of mean metals in dust samples were in the order Zn > Pb > Cu, where Pb shows the greatest coefficient of...
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