Chelatometric Titration of Bismuth with Gallein Indicator
作者:
Peng‐Joung Sun,
期刊:
Journal of the Chinese Chemical Society
(WILEY Available online 1961)
卷期:
Volume 8,
issue 1‐2
页码: 71-78
ISSN:0009-4536
年代: 1961
DOI:10.1002/jccs.196100008
出版商: WILEY‐VCH Verlag
数据来源: WILEY
摘要:
AbstractA method using gallein as indicator for the direct titration of bismuth with disodium salt of EDTA was devised. The titration was carried out in nitric acid. The optimumpH for the titration was found to be atpH. 1.3 to 2.3. The sharpest end point occurred at aroundpH 1.7.The end point was reached when the magenta color gave place to a pale yellow. The interference of approximately equimolar concentration of various foreign ions was studied.By the proposed method bismuth can be accurately titrated in the presence of a variety of both cations and anions including large amounts of lead ions.
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