纺织品提取液中痕量铅的富集分离研究  

Study on enrichment and separation of trace lead in textile extraction solution

作　　者：唐晓萍[1] 刘铁兵[2] 崔莎莎[1] 吴晶[2,3] 欧阳荔[2,4] 

机构地区：[1]北京出入境检验检疫局,北京100026 [2]北京大学公共卫生学院,北京100191 [3]河北工业大学化工学院,天津300130 [4]北京大学医药卫生分析中心,北京100191

出　　处：《实验技术与管理》2012年第5期54-57,共4页Experimental Technology and Management

基　　金：国家质检总局科研基金项目(2009IK108)

摘　　要：目的:建立富集分离纺织品提取液中痕量铅的方法,克服高浓度基体对铅浓度测定的影响。方法:用依据GB/T 3922配制的模拟酸性汗液提取纺织品中的痕量铅,应用所建立的共沉淀方法对提取液中的痕量铅进行富集分离,用ICP-AES分别测定富集分离前后的铅浓度及基体浓度。结果:在优化条件下,新建方法富集分离后的铅回收率在95%以上,对Na离子的去除率达到97%以上;实际纺织品中铅的加标回收率为97.42%～104.82%,RSD为2.7%。结论:所建方法操作简便、成本低、引入污染少,能有效分离纺织品提取液中的钠离子,降低基体浓度,5倍富集提取液中铅离子,成功应用于纺织品中痕量铅的检测。Objective The enrichment and separation method was established to enrich trace lead from textile extraction solution in order to overcome the influence of matrix effect on the determination of lead concentration. Methods The Textile sample was treated by simulated sweat prepared according to GB/T3922 to extract trace lead into the solution and the lead was enriched and separated by the established co precipitation method; the lead and matrix concentrations were determined by ICP AES before and after enrichment and separation. Results Under the optimized conditions, the recovery rate of lead is more than 95% through this new method while the impurity ions＇ removal rate of Na4 is more than 97% ; the lead recoveries of standard addition meth od were 97.42%--104.82%, and the relative standard deviation was 2.7%. Conclusion The characteristic of this method is fast, simple and convenient; the sodium ion was effectively separated from the textile extraction solution in order to reduce the matrix concentration, and the lead ion was enriched by five times in the extrac tion solution, and the method was successfully used in the determination of trace lead in textiles.

关 键 词：纺织品 痕量铅 富集分离 基体效应 

分 类 号：TS101.9[轻工技术与工程—纺织工程]