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Groundwater Arsenic (As) contamination in three groundwater tables (Holocene (qh), Pleistocene (qp2–3), and Pleistocene (qp1)) was examined by using 300, 423, and 204 samples in qh, qp2–3, and qp1, respectively, in Hanoi City in 2000–2003. Land subsidence was derived from JERS-1 images in 1995–1998, and Envisat-ASAR from Jan to April in 2004. Results show that Arsenic was lower in surface water and...
Twelve samples of surface sediment in Nanhu Lake, Wuhan city were collected and the concentrations of Organic Matter (OM), Total Nitrogen (TN), Total Phosphorus (TP), ammonia nitrogen (NH4+-N) and nitrate nitrogen (NO3--N) were determined; the average result were 6.58%, 3972, 1712, 897 and 20mg/kg separately. Cd, Hg, As, Cu, Pb, Cr and Zn were determined too; and the average value were 0.46, 0.140,...
At present, arsenic in the environment has caused obviously global health problem, an effective monitoring method for measuring the content of arsenic in surface water is urgent. In this paper, the silver diethyldithiocarbamate spectrophotometric method was used to measure arsenic content in surface water. It was concluded that the related coefficient for standard curve was 0.9996, the detection limits...
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