Chloride analyses of soil leachate using the TRAACS 800 analyzer

Autor:	C. Heseltine, D.A. Tel
Rok vydání:	1990
Předmět:	inorganic chemicals genetic structures Thiocyanate Chemistry Inorganic chemistry Soil Science chemistry.chemical_element Chloride chemistry.chemical_compound Nitrate Nitric acid Reagent medicine Chlorine Ferric Leaching (metallurgy) Agronomy and Crop Science medicine.drug
Zdroj:	Communications in Soil Science and Plant Analysis. 21:1689-1693
ISSN:	1532-2416 0010-3624
DOI:	10.1080/00103629009368332
Popis:	Chloride is often used as a tracer element in leaching studies in soils. In many cases the leachate contains colloidal clay and organic coloured substances interfering with the determination of chloride. A dialyzer was used to overcome this interference. Highly coloured plant extracts were analyzed without interference. In this method the sample is mixed with the colour reagent and dialyzed into the colour reagent again. The colour reagents consist of mercuric thiocyanate, methanol, nitric acid and ferric nitrate. The reaction depends on the liberation of thiocyanate ions from mercuric thiocyanate, by reaction with Cl‐ions and the formation of un‐ionized but soluble mercuric chloride. In the presence of ferric ion, the liberated thiocyanate forms highly coloured ferric thiocyanate, the concentration of which is proportional to the original chloride concentration.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8822fb788953ef8da4ef16b16e94e3c4 https://doi.org/10.1080/00103629009368332 Zobrazit plný text záznamu