Characterization of non-volatile organic contaminants in coking wastewater using non-target screening: Dominance of nitrogen, sulfur, and oxygen-containing compounds in biological effluents.

While abundant volatile compounds (VOCs) have been identified in coking wastewater, the structures and occurrence of non-volatile organic compounds (non-VOCs) have remained unknown. In this study, 3966 non-VOCs belonging to 24 groups were tentatively identified for the first time in wastewater from four biological coking wastewater treatment systems in northern China using a non-target screening technique. A total of 227 compounds with CHNO, CHO, CHOS, and CHNOS elemental compositions were assigned with level 2 identification confidence, and 19 of them were confirmed with authentic standards, with 9-methyl-9H-carbazole-3-carbaldehyde (1706.

Quantitative analysis of asbestos in drinking water and its migration in mice using fourier-transform infrared spectroscopy and inductively coupled plasma optical emission spectrometry.

The presence of asbestos in the environment has caused concern because exposure to asbestos can cause diseases such as stomach and pancreatic cancer. However, suitable up-to-date methods for quantitatively analyzing asbestos and assessing the toxicity of asbestos have not been developed. In this study, asbestos in drinking water was characterized using a stepwise multiple differential infra-red spectra method and a partial least squares method.

[Investigation of heavy metal contamination in four kinds of fishes from the different farmer markets in Beijing].

To understand the contamination level and the exposure risk of heavy metals in aquatic products in Beijing, an inductively coupled plasma mass spectrometry (ICP-MS) was applied to determine nine heavy metals including Pb, Cd, Cr, As and so on in crucian carp, carp, grass carp and chub from the different farmer markets in Beijing city. All of 96 samples were collected in this study. In them, the concentration of Pb, Cd, Cr, Cu, Ni, Mn, Zn, Fe, As are < 0.