Gas Chromatographic Determination of Traces of O-Isobutyl S-2-(N,N-Diethylamino)ethyl Methyl Phosphonothioate (VX-Like Compound) in Working Area and Community Air |
| |
Authors: | I N Stan'kov A A Sergeeva V B Sitnikov I D Derevyagina O T Morozova S N Mylova |
| |
Institution: | (1) Russian Research Institute of Organic Chemistry and Technology, sh. Entuziastov 23, Moscow, 111024, Russia |
| |
Abstract: | A gas-chromatographic procedure is proposed for the determination of O-isobutyl S-2-(N,N-diethylamino)ethyl methyl phosphonothioate (mixed ester) at the maximum permissible level for the working area air (5 × 10–6 mg/m3) and at the safe reference level of impact for the community air (5 × 10–8 mg/m3). The procedure is based on trapping the mixed ester from air by a chemisorbent. Next, the analyte is extracted by hexane; transformed to O-methyl-O-isobutyl methyl phosphonate by silver nitrate in methanol; and, in the case of the working area air, the methanol solution of the derivative is chromatographed. In the determination of the mixed ester in the community air, a solution of O-methyl-O-isobutyl methyl phosphonate (dialkyl methyl phosphonate) in methanol is passed through a column with an adsorbent and transferred to the chromatographic system with a thermal desorption system. The relative error of the determination of the mixed ester in the working area and community air is no more than 28 and 40 rel. %, respectively. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|