ACCURACY IN GRAVIMETRIC-DETERMINATION OF NITRATE AND NITRITE AS NITRON NITRATE

被引：13

作者：

HIOKI, A

WATANABE, T

TERAJIMA, K

FUDAGAWA, N

KUBOTA, M

KAWASE, A

机构：

[1] National Chemical Laboratory for Industry, Tsukuba 305, Higashi

来源：

ANALYTICAL SCIENCES | 1990年 / 6卷 / 05期

关键词：

accuracy; coulometric titration; gravimetry; ion chromatography; nitrate ion reference solution; nitrite ion reference solution; Nitron method; precision;

D O I：

10.2116/analsci.6.757

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The accuracy of nitron-method gravimetry for the determination of the purity of potassium nitrate and that of sodium nitrite was studied. The gravimetry of potassium nitrate was compared with that of nitric acid determined by an acidimetric coulometric titration. The concentration of nitrate ions left in the filtrate of the nitron nitrate precipitate was measured by ion chromatography. A method for the oxidation of nitrite ions to nitrate ions by permanganate ions was studied for the purpose of the application of the nitron-method to the determination of the purity of sodium nitrite. The small quantity of nitrate ions contained in sodium nitrite was determined by ion chromatography. © 1990, The Japan Society for Analytical Chemistry. All rights reserved.

引用

页码：757 / 762

页数：6

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