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The concentrations of rare earth elements in the dissolved, acid-soluble and residual phases in surface waters of the Changjiang Estuary were determined using ICP-MS. The main purposes of the study are to understand the estuarine geochemistry of rare earth elements and to explore water-particle interactions in the Changjiang estuarine mixing zone. The results show that there are two distinct processes...
The concentrations of dissolved (<0.22 μm) heavy metals were determined across a salinity gradient from 0.15%% to 19%% in surface waters of the Changjiang Estuary. Analyses were by atomic absorption spectrometry following preconcentration by extraction with ammonium pyrrolidine dithiocarbamate (APDC)/diethylammonium diethyldithiocarbamate (DDDC) into Freon-TF (1,1,2-trichloro-2,2,1-trifluoroethane)...
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