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Method determines carbonates in soils and minerals, indicating effective analysis of soil components.
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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Tiessen et al. (1983) studied this question.
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