Allium test genotoxicity data on water from river valley of Irtysh, West Siberia.

Assessment of genotoxicity of aquatic ecosystems is of great importance for environmental management and assessment of water ecological quality as well as health safety. Data on the genotoxicity of water in rivers of such a large region as Siberia are almost absent. Researchers do not pay enough attention to river floodplains, but such studies are important for assessing the ecological condition of the river system, because a significant part of toxic and genotoxic substances accumulates in the river floodplains A unique feature of the Ob-Irtysh interfluve is its vast floodplain, the largest in the Northern Hemisphere, providing key ecological functions of the territory.

[The use of the deuterated internal standard for morphine quantitation for the purpose of doping control by gas chromatography with mass-selective detection].

The objective of this study was to demonstrate the possibility to use deuterated compounds as internal standards for the quantitative analysis of morphine by gas chromatography with mass-selective detection for the purpose of doping control. The paper is focused on the problems associated with the use of deuterated morphine-D3 as the internal standard. Quantitative characteristics of the calibration dependence thus documented are presented along with uncertainty values obtained in the measurements with the use of deuterated morphine-D6.

Thin-layer chromatography with mobile phases of low volatility.

The analytical possibilities and specific features of a variation of thin-layer chromatography with mobile phases of low volatility (which may be organic liquids or melts of organic solids) are discussed.