SPECTROPHOTOMETRIC DETERMINATION OF TRACES OF NITRITE WITH RHODAMINE-6-G

被引：10

作者：

KARTIKEYAN, S ^{[1
]}

RAO, TP ^{[1
]}

IYER, CSP ^{[1
]}

DAMODARAN, AD ^{[1
]}

机构：

[1] CSIR,REG RES LAB,TRIVANDRUM 695019,INDIA

来源：

MIKROCHIMICA ACTA | 1993年 / 111卷 / 4-6期

关键词：

NITRITE DETERMINATION; WELL AND SEA WATER; KNO3; NANO3; TABLE SALT; SUGAR; MILK POWDER; SPECTROPHOTOMETRY; RHODAMINE-6-G;

D O I：

10.1007/BF01245306

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A simple and highly selective spectrophotometric method is described for the determination of nitrite. The method is based on the measurement of decrease in absorbance at 525 nm of rhodamine 6 G in sulphuric acid medium. The decrease in absorbance is instantaneous on addition of nitrite and remains stable for 2 h. Linear calibration graph passing through the origin was obtained in the range 0.01-0.6 mug/ml nitrite. The method is free from interference of Cu2+, Fe3+ and SO32- which normally interfere in other procedures. The method was applied successfully to the determination of nitrite in well and sea water samples and in KNO3, NaNO3, table salt, sugar and milk powder samples.

引用

页码：193 / 198

页数：6

共 27 条

[1] PHOTOMETRIC-DETERMINATION OF NITRITE [J].