INDIRECT DETERMINATION OF MICROGRAMS OF SULFATE BY BARIUM ABSORPTION SPECTROSCOPY

被引：26

作者：

HUE, NV

ADAMS, F

机构：

[1] Department of Agronomy and Soils, Auburn University, Auburn

来源：

COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS | 1979年 / 10卷 / 05期

关键词：

N2O-acetylene flame; Soil sulfate;

D O I：

10.1080/00103627909366942

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The indirect procedure for sulfate determination by Ba absorption spectroscopy was modified so that low concentrations of SO4 in small volumes of solutions could be determined rapidly and precisely. Major modifications consisted of seeding the sample with BaS04, precipitating in ethanol solutions to lower BaSO4solubility, and determining Ba in a N2O-acetylene flame using the absorption mode. The results showed: complete SO4 precipitation as BaSO4after 15 min of shaking, little or no effect from solution A1 on SO4 determination, quantitative recovery of SO4 from 0.01 M Ca(H2PO4)2soil extracts, and greater precision of SO4 measurement with indirect method than with turbidimetric method. © 1979 Taylor & Francis Group, LLC. All Rights Reserved.

引用

页码：841 / 851

页数：11

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