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Fast, Miniaturized, Real-Time Unit for Sampling, Modulation, and Separation in Detection of Hazardous Chemicals
Analytical Chemistry ( IF 7.4 ) Pub Date : 2020-10-20 , DOI: 10.1021/acs.analchem.0c02898
George C. Pallis 1 , George P. Psarras 1 , Julia Vamvakari 1 , Matti J. Kuula 2 , Harri Kiljunen 2 , Hanna Hakulinen 2 , Paula Vanninen 2
Affiliation  

A sampling, modulation, and separation (SMS) unit was tested for detection of hazardous chemicals. The SMS unit, designed and developed for on-site sampling and analysis, consists of a dynamic inlet system coupled with a fast, miniaturized gas chromatograph (GC). Feasibility of the SMS unit was evaluated together with a hazardous chemical vapor generator. The performance of the SMS unit was tested with automated thermal desorption after SMS to collect samples for GC-mass spectrometry (GC-MS) measurements. Detection of sarin nerve agent was verified. Additionally, the vapor generator was connected to the SMS unit, which was hyphenated with a photoionization detector (PID), thus creating a fast GC-PID system. This system gave a positive response for degradation products of sulfur mustard, thereby indicating suitability of the SMS-PID unit for field drone applications.

中文翻译:

快速,小型,实时单元,用于危险化学品的检测,采样和分离

测试了采样,调制和分离(SMS)单元以检测危险化学品。SMS单元是为现场采样和分析而设计和开发的,由动态进气系统和快速,微型化的气相色谱仪(GC)组成。与危险的化学蒸汽发生器一起评估了SMS装置的可行性。SMS收集了用于GC质谱(GC-MS)测量的样品后,通过自动热脱附测试了SMS单元的性能。验证了沙林神经毒剂的检测。另外,将蒸汽发生器连接到SMS单元,并用光电离检测器(PID)将其连接起来,从而创建了一个快速的GC-PID系统。该系统对芥菜的降解产物产生了积极的响应,
更新日期:2020-11-03
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