荧光动力学分析法测定痕量砷  

Determination of Trace Arsenic by the Fluorescence Kinetic Aanlytic Method

作　　者：雷振友 

机构地区：[1]辽宁石化职业技术学院,辽宁锦州121001

出　　处：《辽宁化工》2007年第6期419-420,423,共3页Liaoning Chemical Industry

摘　　要：基于HCl介质中和α,α’-联吡啶存在下,1,4-二羟基-9,10-蒽醌(R)能发强而稳定的荧光,α,α’-联吡啶可活化Hg2+催化H2O2氧化R转化无荧光化合物,导致体系荧光急剧猝灭,据此建立了催化H2O2氧化1,4-二羟基-9,10-蒽醌荧光猝灭法测定痕量砷的新方法。该方法重现性好、灵敏、准确,用于实际中砷含量的测定,结果满意。Based on the medium of HCl and with the presence of α,α- dipyridyl, 1,4 dihydroxyl-9, 10- anthraquinone （R） can give off strong and steady fluorescence and the α,α- dipyridyl can activate Hg^2＋ ,catalyze H2O2, oxidize R and transfer into the non- fluorescence compounds, resulting in the quenching of the systematic fluorescence. Consequently, a new method was developed to determine the trace amount of arsenic by way of catalyzing H2 O2, oxidizing 1,4 dihydroxyl-9 and quenching the fluorescence of 10- anthraquinone. This method has a satisfactory result in the real practice of measuring the arsenic amount for its good reproductivity, exquisiteness and veraciousness.

关 键 词：砷 荧光动力学分析法 α α’-联吡啶 蒽醌 

分 类 号：O657.31[理学—分析化学]