Characterization of automobile float glass with laser-induced breakdown spectroscopy and laser ablation inductively coupled plasma mass spectrometry
Characterization of automobile float glass with laser-induced breakdown spectroscopy and laser ablation inductively coupled plasma mass spectrometry
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DOI：
10.1366/000370206778664572
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发表时间：
2006-10-01
影响因子：
3.5
通讯作者：
Sigman, Michael E.
中科院分区：
文献类型：
--
作者：
Bridge, Candice M.;Powell, Joseph;Sigman, Michael E.
采用激光诱导击穿光谱法（LIBS）和激光烧蚀电感耦合等离子体质谱法（LA-ICP-MS）对23个汽车浮法玻璃样品的折射率（RI）进行了对比分析。计算每个浮法玻璃样品的元素发射强度比（LIBS）和元素浓度比（LA-ICP-MS）及其相关置信区间。比率和置信区间用于确定每种分析方法的判别能力。在相同的置信水平下，仅基于LIBS光谱可以区分83%的玻璃样品，并且在99%的置信度下，基于LIBS光谱结合RI数据可以区分96-99%的样品。LA-ICP-MS数据允许100%的样品区分，而不需要RI数据。结果提供了证据，支持在无法使用LA-ICP-MS的实验室中使用LIBS结合RI对浮法玻璃进行法医分析。
A comparative analysis of the discriminating power of laser-induced breakdown spectroscopy (LIBS) and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), each coupled with refractive index (RI) measurements, is presented for a study of 23 samples of automobile float glass. Elemental emission intensity ratios (LIBS) and elemental concentration ratios (LA-ICP-MS) and their associated confidence intervals were calculated for each float glass sample. The ratios and confidence intervals were used to determine the discrimination power of each analytical method. It was possible to discriminate 83% of the glass samples with 99% confidence based on LIBS spectra alone, and 96-99% of the samples could be discriminated based on LIBS spectra taken in conjunction with RI data at the same confidence level. LA-ICP-MS data allowed for 100 % discrimination of the samples without the need for RI data. The results provide evidence to support the use of LIBS combined with RI for forensic analysis of float glass in laboratories that do not have access to LA-ICP-MS.