A study of the spectrophotometric method for determining exchangeable aluminum in soils by chromeazophenol ks
1985
QIU, XING-CHU | ZHU, YING-QUAN | ZHANG, YU-SHENG
This paper reports optimal conditions for the reaction of aluminum (III) with chromeazophenol KS [also called trisodium 2-(2-hydroxy-3-carboxy-5-sulfobenzeneazo)-1, 8-dihydroxynaphthalene-3, 6-disulfonate, which will be abbreviated CAPKS] (Λmax = 585 nm, pH = 4, CR = 1.59 X 10 M) and a new procedure developed for the spectrophotometric determination of exchangeable aluminum in soils.
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