Issue 1214, 1977

Rapid spectrophotometric micro-determination of nitrites in water

Abstract

A method involving the use of a reagent suitable for the rapid spectrophotometric determination of nitrites in water is described. Nitrites react with resorcinol in an acidic medium and the nitroso product forms a pale yellow chelate with the zirconyl ion. The absorbance of the chelate is measured at 347 nm and the calculated molar absorptivity is 2.67 × 104 l mol–1 cm–1. The method is suitable for the determination of the nitrite ion in a 1.0-cm cell in the range from a few parts per hundred million to about 1 p.p.m. The relative standard deviation of the method is 1.5% at a concentration of 1 p.p.m. Some of the problematic interferents found in most of the analytical procedures for the determination of nitrites are tolerated in the present method. Features of the method include good selectivity and reproducibility, high stability of the coloured reaction product and simplicity.

Article information

Article type
Paper

Analyst, 1977,102, 371-376

Rapid spectrophotometric micro-determination of nitrites in water

J. Gabbay, Y. Almog, M. Davidson and A. E. Donagi, Analyst, 1977, 102, 371 DOI: 10.1039/AN9770200371

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements