激光烧蚀-快脉冲放电等离子体光谱技术分析土壤中的Sn  

Laser Ablation and Fast Pulse Discharge Plasma Spectroscopy Analysis of Sn in Soil

作　　者：李科学[1] 周卫东[1] 沈沁梅[1] 郑毅[1] 李霞芬[1] 钱惠国[1] 邵杰[1] 

机构地区：[1]浙江师范大学信息光学研究所,浙江金华321004

出　　处：《光谱学与光谱分析》2011年第8期2249-2252,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(20804039);教育部科技计划重点项目(208056);浙江省自然科学基金项目(Y1100268);浙江省高校重大科技攻关项目(ZD2009006)资助

摘　　要：采用一种新发展中的激光烧蚀-快脉冲放电等离子体光谱技术首次检测土壤中Sn元素的浓度。与传统的激光诱导击穿光谱技术相比,采用激光烧蚀-快脉冲放电等离子体光谱技术所产生的Sn(284.0nm)元素辐射光谱强度有很大提高,并应用该技术获得了土壤中Sn元素的校准曲线,使土壤中Sn元素检测极限降低到0.16μg.g-1。与各文献报道的激光诱导击穿光谱技术中Sn元素的检测极限8.2～54μg.g-1相比有很大的改进,表明该技术可能在土壤元素快速定量检测中具有应用价值。A developing technique,laser ablation and fast pulse discharge plasma spectroscopy technique（LA-FPDPS）,was used for the first time to analyze the Sn concentration in soil.The peak intensity of Sn（284.0 nm） line from soil plasma emission was greatly enhanced in comparison with using the traditional single pulse（SP） LIBS system.Using the technique,calibration curve of Sn in soil was derived.The limit of detection（LOD） for Sn in soil was reduced to be 0.16 μg·g-1.The value is significantly improved compared with the results reported in literature when using LIBS technique,which usually was between 8.2 to 54 μg·g-1 depending on the experimental condition,indicating that this technique possibly will be useful for rapid quantitative elemental analysis in soil.

关 键 词：光谱学 激光烧蚀-快脉冲放电 定量检测 土壤 

分 类 号：O433.1[机械工程—光学工程]