Organic Carbon Determination in Acid Sulphate Soils

Jusop, Shamsuddin and I., Jamilah and J. A., Ogunwale (1994) Organic Carbon Determination in Acid Sulphate Soils. Pertanika Journal of Tropical Agricultural Science, 17 (3). pp. 197-200. ISSN 0126-6128

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Abstract

Pyrite is almost exclusively present in the reduced zone of acid sulphate soil Profiles. This pyrite is believed to interfere with determination of Cmg in the soils by the wet combustion method using Cr2o7 A study was conducted to determine an accurate and reliable method for estimation of Cmg in acid sulphate soils in Malaysia containing variable amounts of pyrite. Some of the established methods of carbon (C) determination were tested against Carbon Determinator (Leco IR-312) which was regarded as the standard method. It was found that the interference of pyrite in the determination of C in acid sulphate soils by wet combustion was minimal. The total oxidation procedure was found to be the most reliable and accurate method for determination of C in acid sulphate soils in the absence of Carbon Determinator. The Walkley-Black method underestimated, while the loss on ignition method overestimated the Cmg content in the soils.

Item Type:Article
Keyword:acid sulphate soils, carbon, Leco, total oxidation
Publisher:Universiti Putra Malaysia Press
ID Code:3268
Deposited By: Nasirah Abu Samah
Deposited On:25 Nov 2009 01:54
Last Modified:27 May 2013 07:06

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