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Position: Home > Articles > Acid Release from an Acid Sulfate Soil Sample Under Successive Extractions with Different Extractants Pedosphere 2000,10 (3)

Acid Release from an Acid Sulfate Soil Sample Under Successive Extractions with Different Extractants

作  者：
Chuxia Lin;Monirul Islam;Richard T Bush;Leigh A Sullivan;M. D. Melvill
单  位：
University of New South Wales,#TAB;Southern Cross University#TAB#;University of New South Wales,#TAB#
关键词：
kcl;acid release;acidity;the results;extracted;amount
摘  要：
An acid sulfate soil sample was successively extracted withdeionized water, 1 mol L~-1 KCL and 0.0005 mol L~-1 Ca(OH)_2solutions. The results showed that only very small amounts of aciditywere extracted by deionized water, possibly through slow jarositehydrolysis. Acid release through jarosite hydrolysis was greatlyenhanced by Ca(OH)_2 extraction at the expense of the added OH~-being neutralized by the acid released. Successive extraction of thesample with KCl removed the largest amounts of acidity from thesample.

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