The determination of lead in mosses by means of its catalytic effect on the persulphate oxidation of Pyrogallol Red.
Lead is determined in aqueous solution in the concentration range 0.002-10 mug/ml by its catalytic effect on the oxidation of Pyrogallol Red at pH 8.5. The method has been applied to the determination of lead in mosses by means of a wet ashing procedure using nitric and perchloric acids and separation from interfering ions by extraction as the dithizone complex into chloroform, and back-extraction.
Anderson
R G
RG
Department of Physical Sciences, The Polytechnic, Wolverhampton, England.
Brown
B C
BC