DETERMINATION OF TOTAL HARDNESS IN WATER EMPLOYING VISUAL AND SPECTROPHOTOMETRIC TITRATION PROCEDURES

被引：19

作者：

FRITZ, JS

SICKAFOO.JP

SCHMITT, MA

机构：

[1] Institute for Atomic Research, Department of Chemistry, Iowa State University, Ames

[2] Sweet Briar College, Sweet Briar, Va.

来源：

ANALYTICAL CHEMISTRY | 1969年 / 41卷 / 14期

关键词：

D O I：

10.1021/ac50159a028

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Water hardness is determined by titration with EDTA using a mixed indicator containing Arsenazo I and a buffer containing THAM. The end point is sharp and quick; iron, copper, aluminum and common anions do not Interfere in the amounts present in most water samples. A rapid and accurate spectrophotometric titration procedure is also reported. Formation constants for the calcium(II) and magnesium(II) complexes with Arsenazo I at pH 10 have also been determined. © 1969, American Chemical Society. All rights reserved.

引用

页码：1954 / &

共 9 条

[1]

BETZ JD, 1950, J AM WATER WORKS ASS, V42, P49

[2]

BIEDERMANN W, 1948, CHIMIA, V2, P1

[3]

Diehl H., 1950, J AM WATER WORKS ASS, V42, P40

[4] SPECTROPHOTOMETRIC DETERMINATION OF RARE EARTHS [J].