Ag(Ⅲ)配合物-鲁米诺流动注射化学发光法测定新型除草剂甲磺草胺  

Determination of new herbicide Sulfentrazone by flow injection chemiluminescence with Ag(III)complex-luminol System

作　　者：张亚莉[1] 田璐肖 智静驿 哈婧[2] 郭光美[1] 张旭渊 祁松闻 ZHANG Ya-li;TIAN Lu-xiao;ZHI Jing-yi;HA Jing;GUO Guang-mei;ZHANG Xu-yuan;QI Song-wen(Hebei University of Science and Technology School of Science,Shijiazhuang 050018,China;Hebei University of Science and Technology School of Science School of Chemical and Pharmaceutical Engineering,Shijiazhuang 050018,China)

机构地区：[1]河北科技大学理学院,河北石家庄050018 [2]河北科技大学化学与制药工程学院,河北石家庄050018

出　　处：《化学研究与应用》2022年第10期2321-2326,共6页Chemical Research and Application

基　　金：国家科技部重大新药创制专项(2019ZX09302-047)资助;河北省自然科学基金项目(H2020208024)资助。

摘　　要：基于除草剂甲磺草胺对Ag(Ⅲ)配合物-鲁米诺体系的化学发光强度增敏作用,结合流动注射,建立了以流动注射化学发光分析测定甲磺草胺的方法。在碱性条件下,当Ag(Ⅲ)配合物的浓度为3.00×10^(-5) mol·L^(-1),鲁米诺溶液的浓度为8.0×10^(-7) mol·L^(-1),流速为3.3 mL·min^(-1)时,测定甲磺草胺的灵敏度最高。在最佳实验条件下,甲磺草胺浓度在7.0×10^(-8)~3.0×10^(-6) mol·L^(-1)范围内,与发光强度及空白发光强度的比值呈良好的线性关系,方法的检出限为2.6×10^(-10) mol·L^(-1),相关系数为0.9942。对浓度为8.0×10^(-8) mol·L^(-1)的甲磺草胺溶液9次平行测定的相对标准偏差为0.34%。Combined with flow injection,the Ag(Ⅲ)complex-luminol chemiluminescent system in alkaline condition which was applied to the determination of sulfentrazone was firstly reported,based on the enhancing effect of sulfentrazone on the chemiluminescence reaction of luminol with[Ag(HIO_(6))_(2)]^(5-).The main factors affecting the determination were investigated.Under the optimum conditions,the ratio of CL intensity was proportional to concentration of sulfentrazone in the range of 5.0×10^(-8) ~3.0×10^(-6) mol·L^(-1) .The detection limit of sulfonamide was 2.6×10^(-10) mol·L^(-1) .RSD was 0.34% for 9 parallel measurements of sulfonamide solution with concentration of 8.0×10^(-8) mol·L^(-1) .The results were satisfactory for analysis.

关 键 词：甲磺草胺 Ag(Ⅲ)配合物 鲁米诺 流动注射 化学发光 

分 类 号：O657.3[理学—分析化学]