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Sensitive detection of chemical agents and toxic industrial chemicals using active open-path FTIRs

机译：使用有源开路FTIR灵敏地检测化学试剂和有毒工业化学品

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Active open-path FTIR sensors provide more sensitive detection of chemical agents than passive FTIRs, such as the M21 RSCAAL and JSLSCAD, and at the same time identify and quantify toxic industrial chemicals (TIC). Passive FTIRs are bistatic sensors relying on infrared sources of opportunity. Utilization of earth-based sources of opportunity limits the source temperatures available for passive chemical-agent FTIR sensors to 300° K. Active FTIR chemical-agent sensors utilize silicon carbide sources, which can be operated at 1500° K. The higher source temperature provides more than an 80-times increase in the infrared radiant flux emitted per unit area in the 7 to 14 micron spectral fingerprint region. Minimum detection limits are better than 5 μgm/m~3 for GA, GB, GD, GF and VX. Active FTIR sensors can (1) assist first responders and emergency response teams in their assessment of and reaction to a terrorist threat, (2) provide information on the identification of the TIC present and their concentrations and (3) contribute to the understanding and prevention of debilitating disorders analogous to the Gulf War Syndrome for military and civilian personnel.
机译：与无源FTIR（例如M21 RSCAAL和JSLSCAD）相比，有源开放路径FTIR传感器对化学试剂的检测更为灵敏，并且可以同时识别和量化有毒工业化学品（TIC）。无源FTIR是依赖于红外机会源的双基地传感器。利用地球上的机会源将无源化学试剂FTIR传感器可用的源温度限制为300°K。有源FTIR化学试剂传感器利用碳化硅源，可以在1500°K的温度下操作。在7到14微米光谱指纹区域中，每单位面积发出的红外辐射通量增加了80倍以上。 GA，GB，GD，GF和VX的最低检测限优于5μgm/ m〜3。有源FTIR传感器可以（1）协助一线响应者和紧急响应小组评估和应对恐怖威胁，（2）提供有关TIC存在及其浓度的识别信息，以及（3）有助于理解和预防类似于海湾战争综合症的军事人员和文职人员的衰弱性疾病。

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