Juillet Yannick, Le Moullec Sophie, Bégos Arlette, Bellier Bruno
Département Analyse Chimique, Centre d'études du Bouchet, F-91710 Vert le Petit, France.
Analyst. 2005 Jun;130(6):977-82. doi: 10.1039/b416108d. Epub 2005 Apr 18.
Among the chemicals belonging to the schedules of the Chemical Weapons Convention (CWC), sampling and analysis of highly volatile compounds such as hydrogen cyanide (HCN) require special consideration. The latter is present in numerous old chemical weapons that are stockpiled awaiting destruction in Northeastern France: thus, sampling on stockpile area and subsequent verification of HCN levels is compulsory to ensure safety of workers on these areas. The ability of several commercial sorbents to trap hydrogen cyanide at various concentration levels and in various humidity conditions, was evaluated. Furthermore, thermal desorption of the corresponding samples, followed by analysis by gas chromatography-mass spectrometry was also optimised. Carbosieve S-III, a molecular sieve possessing a very high specific area, proved the most efficient sorbent for HCN sampling in all conditions tested. Conversely, the presented results show that Tenax, albeit generally considered as the reference sorbent for air monitoring and analysis of CWC-related chemicals, is not suitable for HCN trapping.
在《化学武器公约》（CWC）附表所列化学品中，对诸如氰化氢（HCN）这类高挥发性化合物进行采样和分析需要特别考虑。氰化氢存在于法国东北部储存以待销毁的众多老旧化学武器中：因此，在储存区进行采样并随后核查氰化氢水平对于确保这些区域工人的安全而言是强制性的。评估了几种商用吸附剂在不同浓度水平和不同湿度条件下捕集氰化氢的能力。此外，还对相应样品的热脱附进行了优化，随后通过气相色谱 - 质谱联用仪进行分析。Carbosieve S - III，一种具有非常高比表面积的分子筛，在所有测试条件下都被证明是用于氰化氢采样的最有效吸附剂。相反，给出的结果表明，尽管Tenax通常被视为用于与《化学武器公约》相关化学品的空气监测和分析的参考吸附剂，但它并不适合捕集氰化氢。
