通过同位素稀释分析法测定空气中炸药的浓度。

Determination of the concentration of explosives in air by isotope dilution analysis.

作者信息

St John G A, McReynolds J H, Blucher W G, Scott A C, Anbar M

出版信息

Forensic Sci. 1975 Aug-Oct;6(1-2):53-66. doi: 10.1016/0300-9432(75)90223-x.

Abstract

The concentrations in air of dinitrotoluene (DNT), trinitrotoluene (TNT), nitroglycerin (NG), ethylene glycol dinitrate (EGDN), and pentaerythritol tetranitrate (PETN) were measured at 25 degrees C under equilibrium conditions, and that of cyclomethylene trinitramine (RDX) was measured at elevated temperature by means of an isotope dilution technique. Isotopically multi-labeled compounds were synthesized and used as diluents. Field ionization mass spectrometry was used to measure the abundance ratios of the unlabeled materials. The concentrations in air at 25 degrees C of DNT, TNT, NG, EDGN, PETN, and RDX are 184, 4, 31, 37,000, 7, and 0.8 ppb v/v, respectively. The data obtained may be used for the assessment of the required sensitivity of air-monitoring detection systems.

摘要

在25摄氏度的平衡条件下测量了二硝基甲苯（DNT）、三硝基甲苯（TNT）、硝化甘油（NG）、乙二醇二硝酸酯（EGDN）和季戊四醇四硝酸酯（PETN）在空气中的浓度，通过同位素稀释技术在高温下测量了环三亚甲基三硝胺（RDX）的浓度。合成了同位素多标记化合物并用作稀释剂。使用场电离质谱法测量未标记物质的丰度比。在25摄氏度时，DNT、TNT、NG、EDGN、PETN和RDX在空气中的浓度分别为184、4、31、37000、7和0.8 ppb v/v。所获得的数据可用于评估空气监测检测系统所需的灵敏度。