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Carbonate analysis in soils and minerals by acid digestion and two‐endpoint titration

 

作者: H. Tiessen,   T. L. Roberts,   J. W. B. Stewart,  

 

期刊: Communications in Soil Science and Plant Analysis  （Taylor Available online 1983）
卷期: Volume 14, issue 2  

页码: 161-166

 

ISSN:0010-3624

 

年代: 1983

 

DOI:10.1080/00103628309367352

 

出版商: Taylor & Francis Group

 

关键词: Soil carbonates;carbonate determination

 

数据来源: Taylor

 

摘要:

A method for the determination of carbonates in soils and minerals is described. It consists of the digestion of a sample, containing between 0.5 and 15 mg C as carbonate, in 5N HCl under a stream of nitrogen gas, followed by the determination of the evolved carbon dioxide in a sodium hydroxide trap. The carbon dioxide is titrated directly as carbonic acid in a two‐endpoint titration between pH 8.3 and 3.7.

 

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