物理学报2011，Vol.60Issue(4)：388-392,5.
土壤重金属铬元素的激光诱导击穿光谱定量分析研究
Quantitative analysis of chrome in soil samples using laser-induced breakdown spectroscopy
摘要
Abstract
We quantitatively analyze the content of element Cr in the national standard soil samples by the method of plasma atomic emission spectroscopy, through using Nd: YAG ( Wavelength: 1064 nm) laser as an excitation source to induce soil plasma in ambient environment of the laboratory. The calibration curve of element Cr is measured by studying the characteristics of laser-induced breakdown spectroscopy of element Cr in soil under optimal conditions. The experimental results demonstrate that the element content (60-400) × 10-6 and the spectral line intensity are in good linear relation, and the relative standard deviation of element analysis of concentration measurement from the standard value is 7.89％. The relative deviation of the quantitative analytic result from the standard value is 5.3％ , and the detection limit of Cr in soil is 16. 3 × 10 -6. The relative deviation by the internal standard method is 2. 7％, which indicates that the internal standard method can improve the accuracy of the measurement. Using the same type of soil to achieve the calibration curves, the relative deviation by the quantitative analysis is 8％.关键词
土壤污染/定量分析/激光诱导击穿光谱/定标曲线Key words
soil pollutioin/ quantitative analysis/ laser-induced breakdown spectroscopy/ calibration curve引用本文复制引用
鲁翠萍,刘文清,赵南京,刘立拓,陈东,张玉钧,刘建国..土壤重金属铬元素的激光诱导击穿光谱定量分析研究[J].物理学报,2011,60(4):388-392,5.基金项目
国家自然科学基金(批准号:60908018),中国科学院知识知识创新工程重大项目(批准号:kzcx1-yw-06-01),安徽省科技计划(批准号:083H3b1581),所长基金(批准号:073H371141)课题的资助. （批准号:60908018）
