Trace determination of sulfide by reversed-phase ion-interaction chromatography using pre-column derivatization

Trace levels of sulphide in environmental samples were converted to a stable product by reaction with N,N-dimethyl-p-phenylenediamine to form methylene blue, thus avoiding the major problems normally associated with ion-exchange methods. Optimal chromatographic conditions were selected and the effec...

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Bibliographic Details
Published in:	Journal of Chromatography 1988, Vol.447 (2), p.415-420
Main Authors:	Haddad, P.R., Heckenberg, A.L.
Format:	Article
Language:	eng
Subjects:	Analytical chemistry Chemistry Chromatographic methods and physical methods associated with chromatography Exact sciences and technology Other chromatographic methods
Online Access:	Get full text
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Summary:	Trace levels of sulphide in environmental samples were converted to a stable product by reaction with N,N-dimethyl-p-phenylenediamine to form methylene blue, thus avoiding the major problems normally associated with ion-exchange methods. Optimal chromatographic conditions were selected and the effects of various analytical parameters and interferences established. Ferrocyanide and ferricyanide at 10 ppm level, which normally presented a major problem for spectrophotometric methods, did not interfere with this chromatographic method. Calibration was linear for 1-2000 ppb sulphide and at 10 ppb the relative standard derivation was 3.7 per cent for eight samples.
ISSN:	0021-9673