Peer Reviewed: Arsenic Speciation

Le, X. Chris; Lu, Xiufen; Li, Xing‐Fang

doi:10.1021/ac041492r

Cited by 144 publications

(73 citation statements)

References 39 publications

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“…Human exposure commonly occurs through ingestion of food and/or drinking water [1e3], and at high levels it may cause skin, lung and bladder cancers [1,3,4]. Whereas the World Health Organization has established a limit of 10 ng g À1 arsenic in drinking water [5], more recent findings reveal that consumption of water with levels as low as 0.017 ng g À1 over long periods of time may lead to arsenicosis [3,4].…”

Section: Introductionmentioning

confidence: 99%

Multivariate optimization of photochemical vapor generation for direct determination of arsenic in seawater by inductively coupled plasma mass spectrometry

Gao

Sturgeon

Mester

et al. 2015

Analytica Chimica Acta

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/npsi/ctrl?action=rtdoc&an=21277071&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=21277071&lang=fr READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10.1016/j.aca.2015.10.020Analytica Chimica Acta, 2015-10 Multivariate optimization of photochemical vapor generation for direct determination of arsenic in seawater by inductively coupled plasma mass spectrometry Photochemical vapor generation (PVG) sample introduction coupled to inductively coupled plasma mass spectrometry (ICPMS) is described for the determination of As in seawater. A PlacketteBurman design (PBD) and central composite design (CCD) were employed to evaluate the significance of experimental variables relevant to the optimization of PVG-ICPMS detection. The impact of the saline matrix on the suppression of analyte signal was eliminated by use of a mixture of 20% (v/v) formic and 20% acetic acid (v/v) as the photochemical reductants. Optimized conditions yielded equivalent PVG generation efficiencies for As(III), As(V), monomethylarsonic acids (MMAs) and dimethylarsinic acids (DMAs), permitting direct and rapid determination of total arsenic in seawater without any other sample pretreatment. Quantitation was accomplished using one point gravimetric standard addition along with a spike of 82 Se internal standard to compensate for signal drift and fluctuation during analysis. The resulting method detection limit of 3 pg g À1 (3s) provided a 15-fold improvement over that obtained using direct solution nebulization, and is comparable to that for conventional chemical hydride generation (HG)-ICPMS. Accuracy was demonstrated by analysis of two Certified Reference Materials (NASS-6 and CASS-5 seawater) with satisfying results characterized by precisions of 3.5% and 3.2% RSD for CASS-5 and NASS-6, respectively. Crown

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Section: Introductionmentioning

confidence: 99%

Multivariate optimization of photochemical vapor generation for direct determination of arsenic in seawater by inductively coupled plasma mass spectrometry

Gao

Sturgeon

Mester

et al. 2015

Analytica Chimica Acta

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“…35 Inorganic arsenic predominates in seawater. In living organisms, organoarsenic compounds were 36 detected years ago, but more recently a large number and variety of organic forms have been 37 identified (Francesconi and Edmonds, 1998;Le, et al, 2004;Taleshi, et al, 2010). 38 Marine algae contain most of their arsenic in the form of arsenosugars.…”

mentioning

confidence: 99%

LC–ICP–MS analysis of arsenic compounds in dominant seaweeds from the Thermaikos Gulf (Northern Aegean Sea, Greece)

et al. 2013

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-Arsenic content in dominant seaweed from the Thermaikos Gulf was determined -Total arsenic values are lower than those found in other Mediterranean seaweeds -As speciation of water extracts from the algae are performed by LC-ICP-MS -Arsenosugars are measured in all samples The content of total arsenic and arsenic compounds in the dominant seaweed species in the 18 Thermaikos Gulf, Northern Aegean Sea, was determined in samples collected in different seasons.

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“…Our collaborator, Dr. ABM Badruzzaman, mentioned that high levels of methane had been measured in tubewells in this area. Methane is known to complex with arsenic to form organic arsenic molecules (52). Given the results is seems as though methane, or some other volatile compound, is biasing our initial GF-AAS arsenic concentration measurements, with the exception of the initial treatment.…”

Section: Water Storage Before Treatmentmentioning

confidence: 92%

“…Arsenic waste remediation could be enhanced by allowing it to undergo biochemical processes, such as through mixing with cow dung (5) or mixing with mud and domestic sewage (8), since toxic arsenic species are lost though biomethylation (52).…”

Section: Spent Aruba Processing and Reusementioning

confidence: 99%

Design of a rural water provision system to decrease arsenic exposure in Bangladesh

Mathieu

2009

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Researchers at the Lawrence Berkeley National Laboratory have invented ARUBA (Arsenic Removal Using Bottom Ash) a material that effectively and affordably removes high concentrations of arsenic from contaminated groundwater. The technology is cost-effective because the substrate-bottom ash from coal fired power plants-is a waste material readily available in South Asia. During fieldwork in four sub-districts of Bangladesh, ARUBA reduced groundwater arsenic concentrations as high as 680 ppb to below the Bangladesh standard of 50 ppb. Key results from three trips in Bangladesh and one trip to Cambodia include (1) ARUBA removes more than half of the arsenic from contaminated water within the first five minutes of contact, and continues removing arsenic for 2-3 days; (2) ARUBA's arsenic removal efficiency can be improved through fractionated dosing (adding a given amount of ARUBA in fractions versus all at once); (3) allowing water to first stand for two to three days followed by treatment with ARUBA produced final arsenic concentrations ten times lower than treating water directly out of the well; and (4) the amount of arsenic removed per gram of ARUBA is linearly related to the initial arsenic concentration of the water. Through analysis of existing studies, observations, and informal interviews in Bangladesh, eight design strategies have been developed and used in the design of a low-cost, community-scale water treatment system that uses ARUBA to remove arsenic from drinking water. We have constructed, tested, and analyzed a scale version of the system. Experiments have shown that the system is capable of reducing high levels of arsenic (nearly 600 ppb) to below 50 ppb, while remaining affordable to people living on less than $2 per day. The system could be sustainably implemented as a public-private partnership in rural Bangladesh.3

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Peer Reviewed: Arsenic Speciation

Cited by 144 publications

References 39 publications

Multivariate optimization of photochemical vapor generation for direct determination of arsenic in seawater by inductively coupled plasma mass spectrometry

Multivariate optimization of photochemical vapor generation for direct determination of arsenic in seawater by inductively coupled plasma mass spectrometry

LC–ICP–MS analysis of arsenic compounds in dominant seaweeds from the Thermaikos Gulf (Northern Aegean Sea, Greece)

Design of a rural water provision system to decrease arsenic exposure in Bangladesh

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