Determination of nitrite via reaction with pyridine-4-carboxylic acid hydrazide

Journal Article · Sat Jun 01 00:00:00 EDT 1985 · Anal. Lett.; (United States)

DOI:https://doi.org/10.1080/00032718508066209· OSTI ID:6437763

Verma, K K; Tyagi, P

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. 11 references, 2 tables.

• Research Organization: Univ. of Jabalpur, India
• OSTI ID: 6437763
• Journal Information: Anal. Lett.; (United States), Vol. 18:A10, Issue 10
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
NITRITES
PYRIDINES
EXPERIMENTAL DATA
HYDRAZIDES
PH VALUE
QUANTITATIVE CHEMICAL ANALYSIS
TITRATION
AZINES
CHEMICAL ANALYSIS
DATA
HETEROCYCLIC COMPOUNDS
INFORMATION
NITROGEN COMPOUNDS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
400102* - Chemical & Spectral Procedures