1 Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, China.
2 University of Science and Technology of China, Hefei, Anhui, China.
Appl Spectrosc. 2018 Jan;72(1):151-158. doi: 10.1177/0003702817719453. Epub 2017 Jul 10.
Raman spectroscopic detection is one of the suitable methods for the detection of chemical warfare agents (CWAs) and simulants. Since the 1980s, many researchers have been dedicated to the research of chemical characteristic of CWAs and simulants and instrumental improvement for their analysis and detection. The spatial heterodyne Raman spectrometer (SHRS) is a new developing instrument for Raman detection that appeared in 2011. It is already well-known that SHRS has the characteristics of high spectral resolution, a large field-of-view, and high throughput. Thus, it is inherently suitable for the analysis and detection of these toxic chemicals and simulants. The in situ and standoff detection of some typical simulants of CWAs, such as dimethyl methylphosphonate (DMMP), diisopropyl methylphosphonate (DIMP), triethylphosphate (TEP), diethyl malonate (DEM), methyl salicylate (MES), 2-chloroethyl ethyl sulfide (CEES), and malathion, were tried. The achieved results show that SHRS does have the ability of in situ analysis or standoff detection for simulants of CWAs. When the laser power was set to as low as 26 mW, the SHRS still has a signal-to-noise ratio higher than 5 in in situ detection. The standoff Raman spectra detection of CWAs simulants was realized at a distance of 11 m. The potential feasibility of standoff detection of SHRS for CWAs simulants has been proved.
拉曼光谱检测是化学战剂 (CWA) 和模拟物检测的一种合适方法。自 20 世纪 80 年代以来，许多研究人员一直致力于 CWA 和模拟物的化学特性研究以及分析和检测用仪器的改进。空间外差拉曼光谱仪 (SHRS) 是 2011 年出现的一种新的拉曼检测仪器。SHRS 具有光谱分辨率高、视场大、高通量等特点，已经广为人知。因此，它非常适合这些有毒化学物质和模拟物的分析和检测。一些典型 CWA 模拟物，如二甲甲基磷酸酯 (DMMP)、二异丙基甲基磷酸酯 (DIMP)、三乙基磷酸酯 (TEP)、二乙基丙二酸酯 (DEM)、水杨酸甲酯 (MES)、2-氯乙基乙基硫醚 (CEES) 和马拉硫磷，已经尝试了进行现场和远距离检测。结果表明，SHRS 确实具有 CWA 模拟物现场分析或远距离检测的能力。当激光功率设置低至 26 mW 时，SHRS 在现场检测中仍具有高于 5 的信噪比。在 11 m 的距离处实现了 CWA 模拟物的远距离拉曼光谱检测。已经证明了 SHRS 对 CWA 模拟物进行远距离检测的潜在可行性。
