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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

journal contribution
posted on 2023-05-16, 14:23 authored by Shaw, M, Jones, P, Paul HaddadPaul Haddad
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.

History

Publication title

Analyst

Volume

128

Issue

10

Pagination

1209-1212

ISSN

0003-2654

Department/School

School of Natural Sciences

Publisher

The Royal Society of Chemistry

Place of publication

Cambridge, England, United Kingdom

Rights statement

Copyright © 2003 Royal Society of Chemistry

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the chemical sciences

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