激光剥蚀电感耦合等离子体质谱在涂料重金属分析中的应用  

Study of laser ablation inductively coupled plasma mass spectrometry in heavy metal analysis of coatings

作　　者：张锁慧[1] 楚民生[2] 周韵[2] 林苗[1] 

机构地区：[1]东华大学化学化工与生物工程学院,生态纺织教育部重点实验室,上海201620 [2]上海出入境检验检疫局工业品与原材料检测技术中心,上海200135

出　　处：《分析试验室》2013年第4期36-41,共6页Chinese Journal of Analysis Laboratory

基　　金：国家质检总局所属上海出入境检验检疫局科技计划项目(HK015-2010和HK016-2010)资助

摘　　要：将激光剥蚀进样技术(LA)与ICP-MS检测器联用,并将这一新技术应用在涂料重金属元素的检测上,通过优化LA和ICP-MS参数,并采用双气流校正技术,以13C、103Rh为双内标,有效地改善了信号强度和稳定性,同时对Hg的记忆效应进行研究,最终建立了LA-ICP-MS法测定涂料中Cr、As、Cd、Sn、Sb、Hg、Pb元素的定量分析方法,样品测定结果与湿法消解ICP-OES法基本吻合。Coupled laser ablation sampling technology with a ICP-MS detector, the LA-ICP-MS technology was applied in heavy metal element analysis of coatings in this paper. The operating parameters of LA and ICP-MS were optimized step by step, and by employing dual gas flow calibration technique as well as taking both 13C and 1033Rh as internal standards, the element signal intensity and stability were greatly improved. Besides, the fractionation and memory effects were also studied. Finally, the method of quantitative analysis for Cr, As, Cd, Sn, Sb, Hg, Pb elements in coatings was established. The results detected by this method agreed with those by ICP-OES with wet digestion sampling. It is shown that this detection method is fast and effective in screening large quantities of coatings, and may contribute to the expansion of its application in solid materials.

关 键 词：LA—ICP—MS 激光剥蚀 双气流路 双内标 涂料 重金属元素 

分 类 号：O657.63[理学—分析化学]