L'Hermite D, Vors E, Vercouter T, Moutiers G
CEA, DEN, DPC, SEARS, F-91191, Gif-sur-Yvette, France.
Environ Sci Pollut Res Int. 2016 May;23(9):8219-26. doi: 10.1007/s11356-016-6305-1. Epub 2016 Feb 23.
Laser-induced breakdown spectroscopy (LIBS) is a laser-based optical technique particularly suited for in situ surface analysis. A portable LIBS instrument was tested to detect surface chemical contamination by chemical warfare agents (CWAs). Test of detection of surface contamination was carried out in a toxlab facility with four CWAs, sarin (GB), lewisite (L1), mustard gas (HD), and VX, which were deposited on different substrates, wood, concrete, military green paint, gloves, and ceramic. The CWAs were detected by means of the detection of atomic markers (As, P, F, Cl, and S). The LIBS instrument can give a direct response in terms of detection thanks to an integrated interface for non-expert users or so called end-users. We have evaluated the capability of automatic detection of the selected CWAs. The sensitivity of our portable LIBS instrument was confirmed for the detection of a CWA at surface concentrations above 15 μg/cm(2). The simultaneous detection of two markers may lead to a decrease of the number of false positive.
激光诱导击穿光谱技术（LIBS）是一种基于激光的光学技术，特别适用于原位表面分析。一台便携式LIBS仪器被用于检测化学战剂（CWA）造成的表面化学污染。在一个毒理学实验室设施中，使用四种化学战剂，即沙林（GB）、路易氏剂（L1）、芥子气（HD）和维埃克斯（VX），在不同的基质上进行表面污染检测测试，这些基质包括木材、混凝土、军绿色油漆、手套和陶瓷。通过检测原子标记物（砷、磷、氟、氯和硫）来检测化学战剂。由于为非专业用户或所谓的终端用户提供了集成界面，LIBS仪器能够在检测方面给出直接响应。我们评估了所选化学战剂的自动检测能力。对于表面浓度高于15μg/cm²的化学战剂检测，我们的便携式LIBS仪器的灵敏度得到了证实。同时检测两种标记物可能会减少假阳性的数量。
