Gottfried Jennifer L, De Lucia Frank C, Munson Chase A, Miziolek Andrzej W
U.S. Army Research Laboratory, AMSRD-ARL-WM-BD, Aberdeen Proving Ground, Aberdeen, MD 21005-5069, USA.
Anal Bioanal Chem. 2009 Sep;395(2):283-300. doi: 10.1007/s00216-009-2802-0. Epub 2009 May 6.
In this review we discuss the application of laser-induced breakdown spectroscopy (LIBS) to the problem of detection of residues of explosives. Research in this area presented in open literature is reviewed. Both laboratory and field-tested standoff LIBS instruments have been used to detect explosive materials. Recent advances in instrumentation and data analysis techniques are discussed, including the use of double-pulse LIBS to reduce air entrainment in the analytical plasma and the application of advanced chemometric techniques such as partial least-squares discriminant analysis to discriminate between residues of explosives and non-explosives on various surfaces. A number of challenges associated with detection of explosives residues using LIBS have been identified, along with their possible solutions. Several groups have investigated methods for improving the sensitivity and selectivity of LIBS for detection of explosives, including the use of femtosecond-pulse lasers, supplemental enhancement of the laser-induced plasma emission, and complementary orthogonal techniques. Despite the associated challenges, researchers have demonstrated the tremendous potential of LIBS for real-time detection of explosives residues at standoff distances.
在本综述中，我们讨论了激光诱导击穿光谱技术（LIBS）在爆炸物残留检测问题中的应用。对公开文献中该领域的研究进行了综述。实验室和经过现场测试的远程LIBS仪器均已用于检测爆炸物材料。讨论了仪器和数据分析技术的最新进展，包括使用双脉冲LIBS减少分析等离子体中的空气夹带，以及应用先进的化学计量技术，如偏最小二乘判别分析，以区分各种表面上的爆炸物和非爆炸物残留。已确定了与使用LIBS检测爆炸物残留相关的一些挑战及其可能的解决方案。多个研究小组研究了提高LIBS检测爆炸物的灵敏度和选择性的方法，包括使用飞秒脉冲激光器、激光诱导等离子体发射的补充增强以及互补正交技术。尽管存在相关挑战，但研究人员已证明LIBS在远程实时检测爆炸物残留方面具有巨大潜力。
