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Colorimetric determination of chlorate in soil and plant extracts
Author(s) -
Banderis A.
Publication year - 1965
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740160910
Subject(s) - chlorate , chemistry , activated charcoal , plant tissue , colorimetry , charcoal , environmental chemistry , chromatography , botany , adsorption , biology , organic chemistry
A colorimetric method, using o ‐tolidine, for the determination of small amounts of chlorate in soil and plant extracts is presented. Substances known to interfere in the colorimetric procedure are unlikely to be present in significant amount in soil and plant extracts, but if present, compensation for their effects can be made. Examination of different parts of the plant showed that conducting tissue was the most suitable for chemical analysis, although the lamina or the whole plant can be used provided the extract is shaken with activated charcoal. Some observations on several plant species grown in pots containing soil contaminated with chlorate are given. The method is useful for confirming visual diagnosis of chlorate toxicity in plants and for measuring the residual concentration in the soil.