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Titolo:
Speciation of arsenic using solid phase extraction cartridges
Autore:
Yalcin, S; Le, XC;
Indirizzi:
Univ Alberta, Fac Med, Dept Publ Hlth Sci, Environm Hlth Sci Program, Edmonton, AB T6G 2G3, Canada Univ Alberta Edmonton AB Canada T6G 2G3 ram, Edmonton, AB T6G 2G3, Canada
Titolo Testata:
JOURNAL OF ENVIRONMENTAL MONITORING
fascicolo: 1, volume: 3, anno: 2001,
pagine: 81 - 85
SICI:
1464-0325(200102)3:1<81:SOAUSP>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
PERFORMANCE LIQUID-CHROMATOGRAPHY; PLASMA-MASS SPECTROMETRY; ATOMIC-ABSORPTION SPECTROMETRY; DRINKING-WATER; CANCER MORTALITY; WELL WATER; ORGANOARSENIC COMPOUNDS; FLUORESCENCE DETECTION; MALIGNANT NEOPLASMS; ONLINE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
42
Recensione:
Indirizzi per estratti:
Indirizzo: Le, XC Univ Alberta, Fac Med, Dept Publ Hlth Sci, Environm Hlth Sci Program, Edmonton, AB T6G 2G3, Canada Univ Alberta Edmonton AB Canada T6G 2G3 monton, AB T6G 2G3, Canada
Citazione:
S. Yalcin e X.C. Le, "Speciation of arsenic using solid phase extraction cartridges", J ENVIR MON, 3(1), 2001, pp. 81-85

Abstract

Various solid phase extraction (SPE) cartridges were investigated for speciation of arsenite [As(III)], arsenate [As(v)], monomethylarsonic acid (MMA) and dimethylarsinic acid (DMA). Cartridges containing different types of sorbent materials were tested for arsenic retention and elution characteristics. Alumina cartridges were found to completely retain all thr four target arsenic species, and are suitable for removal and preconcentration purposes. For speciation analysis, different arsenic species were separated on the basis of their selective retention on and elution from specific cartridges. DMA was retained on a resin-based strong cation exchange cartridge and eluted with 1.0 M HCl. MMA and As(v) were both retained on a silica-based strong anion exchange cartridge and sequentially eluted with 60 mM acetic acid (for MMA) and 1.0 M HCl [for As(v)]. As(III) was not retained on either cartridge and remained in solution. Arsenic species in solution and those eluted from the cartridges were subsequently quantified by using flow injection with hydride generation atomic fluorescence spectrometry (FI-HGAFS) and hydride generation atomic absorption spectrometry (FI-HGAAS). A detection limit of 0.05 mug L-1 arsenic in water sample was achieved using HGAFS. An application of the method was demonstrated at a drinking water treatment facility. As(III) and As(v) species were determined in water at various stagesof treatment. The method is suitable for routine determination of trace levels of arsenic in drinking water to comply with more stringent environmental regulations.

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Documento generato il 02/04/20 alle ore 22:24:49