文章基本信息

标题：Detection of Nitro-aromatic Compound in Soil and Sand using Time Gated Raman Spectroscopy
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作者：Kamal Kumar Gulati ; Vijayeta Gambhir ; M. N. Reddy 等
期刊名称：Defence Science Journal
印刷版ISSN：0976-464X
出版年度：2017
卷号：67
期号：5
页码：588-591
语种：English
出版社：Defence Scientific Information & Documentation Centre
其他摘要：Laser based time-gated Raman Spectroscopy experiments for detection and identification of nitro-aromatic sample which premixed with soil and sand in different concentrations are conducted. A back-scattered stand-off Raman spectroscopy set-up using a frequency double Nd:YAG pulsed laser (532 nm, 8 ns, 10 Hz) was employed to evaluate samples made up of standard nitro- aromatic compounds, p-nitro Benzoic acid (PNBA) premixed with soil and sand at different concentrations. A sensitive ICCD detector was used to capture the weak Raman signals buried in high background noise at optimised experiments parameters like laser pulse energy, ICCD gate width, background subtraction, number of laser pulses averaging etc. p- nitro benzoic acid up to 5 per cent (v/v) concentration in sand with appreciable signal to noise ratio has been detected. This feasibility study also becomes relevant to evaluate the remnants for post-blast detection of explosives in terrorist attack as most of the explosives used in such attacks contain nitro-aromatic based high energetic explosives.
关键词：Explosives detection;Nitro aromatic compound;time gated Raman Spectroscopy