Arsenic Speciation in Water and Human Urine by HPLC–ICP-MS and HPLC–MO–HG-AAS

Moldován, Mariella; Gómez, Milagros; Palacios, María A.; Cámara, Carmen

doi:10.1006/mchj.1997.1556

Cited by 28 publications

(9 citation statements)

References 21 publications

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“…Sample pre-treatment, changing argon flow rates, modifying interface configurations and voltages post-column dilution can solve problems partially (Rosen and Hieftje, 2004). Hyphenated method HPLC-ICP-MS is now considered the most-effective technique in arsenic speciation in many arsenic research laboratories (Bednar et al, 2004;Guerin et al, 1999;Klaue and Blum, 1999;Milstein et al, 2002;Moldovan et al, 1998;Saeki et al, 2000;Taniguchi et al, 1999, etc.) Additional HG reduces the detection limit of instrument (around 1 ng/L) compared to conventional ICP-MS, and prevents the spectral interferences which may occur due to formation of ArCI ions.…”

Section: Arsenic Speciation Hyphenated Techniquesmentioning

confidence: 96%

“…Reduced forms will undergo oxidation by O 2 in the atmosphere and react with atmospheric SO 2 or O 3 (Cullen and Reimer, 1989). In oxic seawater, typically, As(V) dominates, though As(III), MMAA, DMAA are also present (Moldovan et al, 1998). In open seawater, ratio of As(V)/As(III) is typically in the range 10-100 (Andreae, 1979;Peterson and Carpenter, 1983;Pettine et al, 1992).…”

Section: Arsenic Speciation In Natural Water Environmentmentioning

confidence: 98%

“…In these zones of primary productivity, increases in organic species as a result of methylation reactions by phytoplankton have been recorded. Their concentrations will depend on abundance and the number of species present in the biota, and temperature (Howard et al, 1999;Moldovan et al, 1998;Riedel, 1993). In lake and river waters, As(V) is also the dominant species, though significant seasonal variations in speciation and concentration have been found (Pettine et al, 1992;Seyler and Martin, 1990).…”

Section: Arsenic Speciation In Natural Water Environmentmentioning

confidence: 99%

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Arsenic Speciation Analysis in Water Samples: A Review of The Hyphenated Techniques

Terlecka

2005

Environ Monit Assess

106

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Interests in the determination of different arsenic species in natural waters is caused by the fact that toxic effects of arsenic are connected with its chemical forms and oxidation states. In determinations of water samples inorganic arsenate (As(III), As(V)), methylated metabolities (MMAA, DMAA) and other organic forms such as AsB, AsC, arsenosugars or arsenic containing lipids have the most importance. This article provides information about occurrence of the dominant arsenic forms in various water environments. The main factors controlling arsenic speciation in water are described. The quantification of species is difficult because the concentrations of different forms in water samples are relatively low compared to the detection limits of the available analytical techniques. Several hyphenated methods used in arsenic speciation analysis are described. Specific advantages and disadvantages of methods can define their application for a particular sample analysis. Insufficient selectivity and sensitivity of arsenic speciation methods cause searching for a new or modifications already existing techniques. Some aspects of improvement and modifications of the methods are highlighted.

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Section: Arsenic Speciation Hyphenated Techniquesmentioning

confidence: 96%

Section: Arsenic Speciation In Natural Water Environmentmentioning

confidence: 98%

Section: Arsenic Speciation In Natural Water Environmentmentioning

confidence: 99%

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Arsenic Speciation Analysis in Water Samples: A Review of The Hyphenated Techniques

Terlecka

2005

Environ Monit Assess

106

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“…Massachusetts, USA) with a Hamilton PRP-X100 anion exchange column and (NH 4 ) 2 CO 3 in 2 % methanol as mobile phase. [20] Filtration Experiment…”

Section: Study Areamentioning

confidence: 99%

Arsenic in drinking water wells on the Bolivian high plain: Field monitoring and effect of salinity on removal efficiency of iron-oxides-containing filters

Bergh

Laing

Montoya

et al. 2010

Journal of Environmental Science and Health, Part A

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Arsenic in drinking water wells on the Bolivian high plain: Field monitoring and effect of salinity on removal efficiency of iron-oxides containing filters K. VAN Synthetic drinking water could be treated effectively by the IOCS and CIM based filters reducing As to concentrations lower than 10 µg L -1 . High levels of chloride and sulphate did not influence As removal efficiency. However, phosphate concentrations in the range from 4 to 24 mg L -1 drastically decreased removal efficiency of the IOCS based filter but had no effects on removal efficiency of the CIM based filter. Results of this study can be used as a base for further testing and practical implementation of drinking water purification in the Oruro region.

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“…However, these limits refer to total arsenic and there remains a compelling need for regulations for at least some of the individual arsenic species. Therefore, sensitive element analysis techniques such as ICP-MS are required to achieve the regulated detection limits for total arsenic [3,9,10] and will be even more necessary when regulations for individual species emerge. Separate identification and quantification of the individual forms of arsenic would be of much greater use in assessing overall risk.…”

Section: Introductionmentioning

confidence: 99%

A study of method robustness for arsenic speciation in drinking water samples by anion exchange HPLC-ICP-MS

et al. 2002

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Regulating arsenic species in drinking waters is a reasonable objective, since the various species have different toxicological impacts. However, developing robust and sensitive speciation methods is mandatory prior to any such regulations. Numerous arsenic speciation publications exist, but the question of robustness or ruggedness for a regulatory method has not been fully explored. The present work illustrates the use of anion exchange chromatography coupled to ICP-MS with a commercially available "speciation kit" option. The mobile phase containing 2 mM NaH(2)PO(4) and 0.2 mM EDTA at pH 6 allowed adequate separation of four As species (As(III), As(V), MMAA, DMAA) in less than 10 min. The analytical performance characteristics studied, including method detection limits (lower than 100 ng L(-1) for all the species evaluated), proved the suitability of the method to fulfill the current regulation. Other parameters evaluated such as laboratory fortified blanks, spiked recoveries, and reproducibility over a certain period of time produced adequate results. The samples analyzed were taken from water utilities in different areas of the United States and were provided by the U.S. EPA. The data suggests the speciation setup performs to U.S. EPA specifications but sample treatment and chemistry are also important factors for achieving good recoveries for samples spiked with As(III) as arsenite and As(V) as arsenate.

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Arsenic Speciation in Water and Human Urine by HPLC–ICP-MS and HPLC–MO–HG-AAS

Cited by 28 publications

References 21 publications

Arsenic Speciation Analysis in Water Samples: A Review of The Hyphenated Techniques

Arsenic Speciation Analysis in Water Samples: A Review of The Hyphenated Techniques

Arsenic in drinking water wells on the Bolivian high plain: Field monitoring and effect of salinity on removal efficiency of iron-oxides-containing filters

A study of method robustness for arsenic speciation in drinking water samples by anion exchange HPLC-ICP-MS

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