激光诱导击穿光谱法检测液体中微量元素的潜力评估。
Evaluation of the potential of laser-induced breakdown spectroscopy for detection of trace element in liquid.
作者信息
Yueh Fang-Yu, Sharma Ramesh C, Singh Jagdish P, Zhang Hansheng, Spencer William A
机构信息
Diagnostic Instrumentation and Analysis Laboratory, Mississippi State University, Starkville, Mississippi 39759-7704, USA.
出版信息
J Air Waste Manag Assoc. 2002 Nov;52(11):1307-15. doi: 10.1080/10473289.2002.10470860.
The analytical figure of merit of the potential of laser-induced breakdown spectroscopy (LIBS) has been evaluated for detection of trace element in liquid. LIBS data of Mg, Cr, Mn, and Re were studied. Various optical geometries, which produce the laser spark in and at the liquid sample, were tested. The calibration curves for Mg, Cr, Mn, and Re were obtained at the optimized experimental conditions with bulk liquid and in liquid jet. It was found that measurements using a liquid jet provide better detection limits than bulk liquid measurements. The limits of detection (LOD) of Mg, Cr, Mn, and Re in the present liquid jet measurement are found to be 0.1, 0.4, 0.7, and 8 ppm, respectively. The LOD of Mg using Mg 279.55 nm was compared with the values found in other liquid work.
已对激光诱导击穿光谱法（LIBS）的分析品质因数进行了评估，以检测液体中的微量元素。研究了Mg、Cr、Mn和Re的LIBS数据。测试了在液体样品内部和表面产生激光火花的各种光学几何结构。在优化的实验条件下，使用大量液体和液体射流获得了Mg、Cr、Mn和Re的校准曲线。结果发现，使用液体射流进行测量比大量液体测量具有更好的检测限。在当前的液体射流测量中，Mg、Cr、Mn和Re的检测限分别为0.1、0.4、0.7和8 ppm。将使用Mg 279.55 nm时Mg的检测限与其他液体研究中的值进行了比较。
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