Methodological approaches to ekologo-analytical definition of resistant organic compounds in water objects

About the authors:

Nikolay Tretyakov, Cand.  Chem.  Sci,  Associate  Professor,  Leading  Researcher, Organic and Ecological Chemistry Department, Institute of Mathematics, Natural Sciences and Information Technologies, Tyumen State University
Tatyana I. Moiseyenko, Dr. Sci. (Biol.), Professor, Corresponding Member of the RAS, Deputy Director for Science, Vernadsky Institute of Geochemistry and Analytical Chemistry of the RAS (Moscow); moiseenko.ti@gmail.com

Abstract:

Methodological approaches have been developed for the determination of organic contaminants by gas liquid chromatography with electron-capture and massselective detection which allow to define in one experiment, α-, β-, γ-, δ-HCH, DDD, DDT, DDE, aldrin, hexachlorobenzene, heptachlor and other chlorinated pesticides, which significantly increases the accuracy of the analysis. According to the developed technique the investigations related to the definition of microtraces semivolatile organochloride compounds in the hydrologic systems of Tyumen region have been conducted. Organochlorine pesticide concentrating has been carried out by solid-phase extraction method DIONEX Auto Trase 280 SPE. The concentrating degree has reached more 1000. Pesticide concentrations in natural water have been defined in the final extracts by Chromato-Mass-Spectrometry through mass-selective detection (SIM). Concentrations of the individual components do not exceed the maximum permissible concentration. This technique allows to define not only organochlorine pesticides but also dioxin-like substances for instance polychlorinated biphenyls (PCBs).

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