Determination of Nitrite via Reaction with Pyridine-4-Carboxylic Acid Hydrazide
作者:
KrishnaK. Verma,
Pramila Tyagi,
期刊:
Analytical Letters
(Taylor Available online 1985)
卷期:
Volume 18,
issue 10
页码: 1281-1287
ISSN:0003-2719
年代: 1985
DOI:10.1080/00032718508066209
出版商: Taylor & Francis Group
关键词: Nitrite Determination;Reaction with Pyridine-4-Carboxylic acid Hydrazide;Titrimetry with Chloramine-T
数据来源: Taylor
摘要:
Nitrite is determined by its reaction with a measured but excessive amount of pyridine-4-carboxylic acid hydrazide in acid medium (when the two substances react in a 1:1 molar ratio) and evaluation of the surplus hydrazide by titration with chloramine-T in the presence of acidified potassium bromide, the end-point being shown by the decolorization of the methyl red indicator. Nitrate, copper(II), mercury(II), etc. are found not to interfere, and the determination of nitrite in the presence of diazotized aromatic amines is demonstrated.
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