流动注射化学发光法测定氨基硫脲  

Flow Injection Chemiluminescence System for Determination of Thiosemicarbazide

作　　者：王书民[1] 樊雪梅[1] 张亚锋[1] 陈凤英[1] 郑行望[2] 

机构地区：[1]商洛学院化学与化学工程系,陕西省商洛市北新街10号726000 [2]陕西师范大学化学与材料科学学院,西安市长安南路199号710062

出　　处：《光谱实验室》2011年第4期1640-1643,共4页Chinese Journal of Spectroscopy Laboratory

基　　金：国家自然科学基金资助项目(20575040);陕西省教育厅自然科学专项基金资助项目(08JK278)

摘　　要：基于氨基硫脲对高锰酸钾-乙二醛化学发光体系的增敏作用,建立了氨基硫脲的流动注射化学发光测定方法;在最佳测试条件下,氨基硫脲的检出限为5.0×10-8m ol.L-1,线性范围为1.0×10-7—1.0×10-3m o.lL-1;对1.0×10-6m o.lL-1的氨基硫脲溶液平行测定11次,其RSD为2.1%。该方法可应用于水样中氨基硫脲含量的测定。A sensitive flow injection chemiluminescence（FL-CI.） method for determination of thiosemicarbazide was developed. The method was based on that thiosemicarbazide could enhance the CL reaction of glyoxal and KMnO4 in hydrochloric acid. Under the optimized conditions, thiosemicarbazide was determined, the detection limit of the method was 5. 0 X 10-8mol· L^-1 for thiosemicarbazide, the linear range for thioscmicarbazide was 1.0 × 10^-7-1.0 ×10^-8mol.L^-1,and the relative standard deviation was 2. 1% for 1.0 × 10^-6mol.L^-1 thiosemicarbazide in 11 repeated measurements. The method is successfully applied for the determination of thiosemicarbazide in water sample.

关 键 词：化学发光 流动注射 高锰酸钾 乙二醛 氨基硫脲 

分 类 号：O657.39[理学—分析化学]