FLOW-THROUGH SENSOR FOR THE FLUOROMETRIC-DETERMINATION OF CYANIDE

被引：19

作者：

CHEN, DH ^{[1
]}

DECASTRO, MDL ^{[1
]}

VALCARCEL, M ^{[1
]}

机构：

[1] WUHAN UNIV,DEPT CHEM,WUHAN,PEOPLES R CHINA

来源：

TALANTA | 1990年 / 37卷 / 11期

关键词：

D O I：

10.1016/0039-9140(90)80152-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A fluorimetric method for the determination of cyanide, based on its reaction with pyridoxal-5-phosphate and the use of an anion-exchange resin (QAE Sephadex) located in the detector flow-cell, is proposed. The merging-zone flow-injection manifold used allows simultaneous injection of the sample and reagent, development of the reaction along the transport system, and retention of the reaction product in the flow-cell. The calibration graph for cyanide is linear over the range from 50 ng/ml to 3.0 μg/ml and the relative standard deviation and sampling frequency are 1.4% (for 2 μg/ml cyanide) and 10 per hr, respectively. The selectivity of the method is much better than that of the conventional fluorimetric and photometric flow-injection methods for cyanide. © 1990.

引用

页码：1049 / 1055

页数：7

共 37 条

[31] FLOW-INJECTION DETERMINATION OF HYDROGEN-PEROXIDE BY MEANS OF A SOLID-STATE PEROXYOXALATE CHEMI-LUMINESCENCE REACTOR [J].