Screened indicators for the direct chelometric titration of lead(II)

ANALYSTANALYST Pub Date: DOI: 10.1039/AN9851000837

Abstract

Two screened indicators, Eriochrome Black T-Methyl Red (7.4 + 1)-NaCl (1 + 100, m/m) and Bromopyrogallol Red-Naphthol Green B-Thymol Blue (2.5 + 21 + 1)-NaCl (1 + 100, m/m), are proposed for the titration of lead against Na2EDTA. Clarity and accuracy of titration are improved.

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