FLOW-INJECTION CHEMILUMINESCENCE DETERMINATION OF ULTRA-LOW CONCENTRATIONS OF NITRITE IN WATER

被引：49

作者：

MIKUSKA, P

VECERA, Z

ZDRAHAL, Z

机构：

[1] Institute of Analytical Chemistry, Academy of Sciences of the Czech Republic, CZ-61142 Brno

来源：

ANALYTICA CHIMICA ACTA | 1995年 / 316卷 / 02期

关键词：

CHEMILUMINESCENCE; FLOW INJECTION; NITRITE; WATERS;

D O I：

10.1016/0003-2670(95)00369-B

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new flow chemiluminescence method for the determination of ultra low concentrations of nitrite in water is presented. , in acid medium to form peroxynitrous acid that is subsequently detected as peroxynitrite by the Nitrite reacts with H2O2 chemiluminescence reaction with alkaline solution of luminol. The detection limit of nitrite is 1 x 10(-9) mol l(-1) (for 50 mu l samples) and the calibration graph is linear up to 1X10(-5) M NO2-. The relative standard deviations for 1x10(-6) M and 3 X 10(-8) M NO2- are 1.8% and 5.4%, respectively. The interferences of cations are eliminated by passing the sample through a cation-exchange column. Common anions do not interfere. Analysis time is 3 minutes. The results are in good agreement with a standard spectrophotometric method.

引用

页码：261 / 268

页数：8

共 39 条

[1] SPECTROMETRIC DETERMINATION OF NITRITE IN AQUEOUS-SOLUTION BY THE DIAZOTIZATION-COUPLING METHOD WITH PARA-AMINOBENZOPHENONE-N-(1-NAPHTHYL)-ETHYLENEDIAMINE [J].