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[Use of 7-amino-4-methylcoumarin for the Spectrophotometric Determination of Nitrites]

[Use of 7-amino-4-methylcoumarin for the Spectrophotometric Determination of Nitrites]

J Y Zhou, C Dauphin, M Hamon

Ann Pharm Fr. 1993;51(2):94-100.

PMID: 8250489

Abstract:

A new reagent of diazotisation, 7-amino-4-methylcoumarin (coumarin 120) is proposed for the spectrophotometric determination of small amounts of nitrite. To obtain molecules with an high absorptivity, the copulation with different aromatic amines is studied. N, N-dimethylaniline leads to the best results, particularly the reproducibility. Under the optimised conditions, a good linearity (between 10 micrograms/l and 200 micrograms/l) and a good reproducibility (2-3%) according to the amount of detected nitrites are obtained.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP26093312-A	7-Amino-4-methylcoumarin		26093-31-2	Price

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