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Supercritical fluid extraction of metals using bis(2,4,4-trimethyl-pentyl) monothiophosphinic acid as chelating agent for subsequent ICP-MS analyses of mercury, cadmium and lead in sediment

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posted on 2011-01-01, 00:00 authored by E C Roa, Madeleine SchultzMadeleine Schultz, M B Capangpangan
This study investigated and validated the optimum conditions for a supercritical fluid extraction (SFE) method using bis(2,4,4-trimethylpentyl)- monothiophosphinic acid as a chelating ligand, for subsequent ICP-MS analyses of mercury, cadmium and lead in sediment. Several combinations of pressure, temperature and modifier (P-T-M) conditions for SFE were tested and an appropriate collection solvent was also determined using a sediment certified reference material (CRM) as sample, to determine the optimum set of conditions. Validation results of the optimized method indicated high percent recoveries which are better compared to standard methods.

History

Journal

E-journal of chemistry

Volume

8

Issue

3

Pagination

1114 - 1119

Publisher

Hindawi Publishing Corporation

Location

Cairo, Egypt

eISSN

0973-4945

Language

eng

Publication classification

C Journal article; CN.1 Other journal article

Copyright notice

2011, Hindawi Publishing Corporation

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