Issue 13, 2014

Spectrophotometric flow-injection determination of sulfate in rainwater

Abstract

A flow-injection system is proposed for the spectrophotometric determination of low concentrations of sulfate in rainwater using barium dimethylsulfonazo(III) (Ba-DMSA). Selectivity is enhanced by including a Dowex 1-X8 anionic resin mini-column into the manifold, aiming at sulfate in-line concentration and separation from potential interfering chemical species. The proposed system is robust and provides precise results (r.s.d. < 5.0%) at an analytical frequency of 40 h−1. About 0.09 mg DMSA is consumed per determination. The analytical curve is linear up to 2.0 mg L−1 SO42− and the detection and quantification limits were estimated as 0.01 and 0.04 mg L−1 SO42−, respectively. Results are in agreement with those obtained by ion chromatography at the 95% confidence level.

Graphical abstract: Spectrophotometric flow-injection determination of sulfate in rainwater

Article information

Article type
Technical Note
Submitted
25 ဖေ 2014
Accepted
17 မတ် 2014
First published
15 မေ 2014

Anal. Methods, 2014,6, 4889-4894

Spectrophotometric flow-injection determination of sulfate in rainwater

T. F. Gomes, M. K. Sasaki, C. R. Silva and E. A. G. Zagatto, Anal. Methods, 2014, 6, 4889 DOI: 10.1039/C4AY00473F

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