催化固体基质室温磷光测定痕量砷  

Catalytic Methods for Detection of the As(V) Based on Oxidizing Reaction between Hydrogen Peroxide and Fullerenol Using Tween-80 as Sensitizer

作　　者：叶飞 朱皓 郑伟巧 杨智香 连璐 杨盛松 YE Fei ZHU Hao ZHENG Wei-qiao YANG Zhi-xiang LIAN Lu YANG Sheng-song(Fujian Hao Er Bao New Material Technology Co., LTD, Zhangzhou, Fujian 363000, Chin)

机构地区：[1]福建皓尔宝新材料科技有限公司,福建漳州363000

出　　处：《闽南师范大学学报（自然科学版）》2016年第2期65-72,共8页Journal of Minnan Normal University：Natural Science

摘　　要：基于Tween-80能增敏富勒醇(Fullerol,简称F-ol)在硝酸纤维素膜(NCM)上可发射强而稳定的室温磷光(RTP),F-ol可被H_2O_2氧化而发生RTP猝灭,As(Ⅴ)能催化H_2O_2氧化F-ol的反应,导致F-ol的磷光信号剧烈猝灭,比无Tween-80时的ΔIp增大7.7倍,且As(Ⅴ)的含量在0.016~11.2(ag spot^(-1))范围内与ΔIp值呈线性关系,据此建立了Tween-80增敏As(Ⅴ)氧化F-ol催化固体基质室温磷光法(SS-RTP)测定痕量砷的新方法.在最佳条件下,本方法线性范围为0.016~11.2ag spot^(-1),检出限(L.D.)为2.3×10^(-17)g·m L^(-1).该方法灵敏、简便、选择性好,并成功用于人发和茶叶中As(V)含量的测定.同时探讨了SS-RTP测定As(V)的反应机理.A new catalytic methods for detection the of As（V） has been designed. It is based on the fact that As （V） could catalyze H20： to oxidize F-ol and decreased RTP signal of F-ol sharply. After adding tween-80 in the system, its Alp enhanced 7.7 times than that without Tween-80. Under the optimum conditions, the linear dynamic range of this method was 0.016-11.2μg spot^-1 with a detection limit （L.D.） of 2.3×10^-17 g.mL^-1. This sensitive, simple and selective method has been successfully applied to the determination of trace As（V） in human hair and tea samples. And the reaction mechanism for SS-RTP is discussed.

关 键 词：砷 富勒醇 TWEEN-80 催化固体基质室温磷光法 

分 类 号：O629.8[理学—有机化学]