A FLOW-CELL OPTOSENSOR FOR LEAD BASED ON IMMOBILIZED DITHIZONE

被引：40

作者：

DEOLIVEIRA, WA

NARAYANASWAMY, R

机构：

[1] UNIV MANCHESTER,INST SCI & TECHNOL,DEPT INSTRUMENTAT & ANALYT SCI,POB 88,MANCHESTER M60 1QD,LANCS,ENGLAND

[2] UNIV ESTADUAL CAMPINAS,INST QUIM,BR-13081 CAMPINAS,SP,BRAZIL

来源：

TALANTA | 1992年 / 39卷 / 11期

关键词：

D O I：

10.1016/0039-9140(92)80132-W

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Dithizone immobilized on XAD-4 resin has been studied as a sensor element of an optical sensor for lead using a flow-cell. Using this arrangement, lead in solution has been determined in the concentration range 1 x 10(-5)-3 x 10(-7)M with a detection limit of 1 x 10(-8)M (i.e., 2 mug/l.). The standard deviation of the method for the measurement of lead at a concentration of 1 x 10(-6)M was found to be 7%. The response of the sensor was reproducible and can be regenerated using 0.01M hydrochloric acid followed by citrate-hydroxylamine solution.

引用

页码：1499 / 1503

页数：5

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