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Dithizone derivatives as sensitive water soluble chromogenic reagents for the ion chromatographic determination of inorganic and organo-mercury in aqueous matrices

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Shaw, MJ and Jones, P and Haddad, PR (2003) Dithizone derivatives as sensitive water soluble chromogenic reagents for the ion chromatographic determination of inorganic and organo-mercury in aqueous matrices. Analyst, 128 (10). pp. 1209-1212. ISSN 0003-2654

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Abstract

Water-soluble sulfonate and the novel carboxylate analogues of dithizone, combined with ion interaction chromatography on a Dionex Acclaim 120 C18 silica column (250 × 4.6 mm id) with an eluent consisting of 10 mM tetrabutylammonium bromide and 60:40 methanol:water, have been developed as highly sensitive chromogenic ligands for the quantitative isocratic determination of inorganic and organo-mercury compounds in aqueous matrices in under 12 min. Using an optimised post column reagent system containing 0.65 mM dye, 0.5% Triton X-100 and 50 mM sodium hydroxide, good linearity (0–7.5 mg L–1R2 > 0.999), reproducibility using peak area measurements (RSD 0.69–1.38%, n= 8), and limits of detection (4–12 µg L–1) were achieved for methyl mercury, inorganic mercury and phenyl mercury.

Item Type: Article
Journal or Publication Title: Analyst
Page Range: pp. 1209-1212
ISSN: 0003-2654
Identification Number - DOI: 10.1039/b308834k
Additional Information: © Royal Society of Chemistry 2008
Date Deposited: 10 Oct 2008 03:48
Last Modified: 18 Nov 2014 03:51
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