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 | Zendy

Elnor C. Roa | Zendy; Madeleine Schultz | Zendy; Mario B. Capangpangan | Zendy

Open Access

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

Author(s) -

Elnor C. Roa,

Madeleine Schultz,

Mario B. Capangpangan

Publication year - 2011

Publication title -

journal of chemistry

Language(s) - English

Resource type - Journals

eISSN - 2090-9063

pISSN - 2090-9071

DOI - 10.1155/2011/739216

Subject(s) - mercury (programming language) , cadmium , supercritical fluid , chemistry , certified reference materials , supercritical fluid extraction , chelation , solvent , chromatography , extraction (chemistry) , sediment , inductively coupled plasma mass spectrometry , solvent extraction , analytical chemistry (journal) , detection limit , inorganic chemistry , mass spectrometry , organic chemistry , paleontology , computer science , biology , programming language

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

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