[Application of ICP-mS in the health risk assessment of heavy metals for drinking water sources in reservoirs].

The six heavy metal concentrations (Cr, Cr, As, Cd, Cu, Zn and Pb) in water samples collected from five reservoirs of Liao River Basin were studied. The health risk assessment for heavy metals pollution in reservoirs was conducted based on the environmental health risk assessment model recommended by U. S.

[Determination of nitrate and nitrite in water samples using gallery automatic discrete analyzer].

Thermo Scientific Gallery Automatic Discrete Analyzer is special for water analyzing, and can automatically run steps includeing sample and reagents dispensing, water blank, mixing and incubation, Colorimetric reading and data processing. This method refers to U.S.

[PBDEs in sediments from 14 principal tributaries of Haihe River and their potential risk].

Violent disturbance are occurring in Haihe River basin due to a large number of human activities. To investigate the PBDEs pollution status and their distribution character, 48 surface sediment samples (at the top 0-5 cm layer) were collected from 14 principal tributaries in Haihe River basin. The contents of 27 PBDEs congeners in sediments were measured using Varian CP3800/300 GC-MS/ MS technique.

[Preliminary health risk assessment of heavy metals in drinking waters in Beijing].

Concentrations distribution of the Cu, Hg, Cd, As in drinking water in the 8 city districts and 10 counties in Beijing was studied based on a total of 120 random samples. Health risks associated with 4 metals in drinking water were assessed using USEPA health risk assessment model. The results showed that the concentrations of the heavy metals in drinking water in Beijing ranged from 0.