Arsenic geochemistry and health

Duker, Alfred Allan; Carranza, Emmanuel John M.; Hale, Martin

doi:10.1016/j.envint.2004.10.020

Cited by 515 publications

(246 citation statements)

References 156 publications

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“…The biotoxicity of As is dependent on its speciation, and the rank order of arsenical toxicity is as follows: MMA (III) -> arsenite > arsenate > DMA (V) [2,3]. Under aerobic conditions, pentavalent As is more stable and predominant, whereas trivalent species predominate under anaerobic conditions [4]. Recent studies showed that algae could hyperaccumulate As from water [5].…”

Section: Introductionmentioning

confidence: 99%

Arsenic speciation and effect of arsenate inhibition in a Microcystis aeruginosa culture medium under different phosphate regimes

Guo

Gong

Wang

et al. 2011

Enviro Toxic and Chemistry

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Abstract-To assess the ecological impact of arsenic pollution during cyanobacterial blooms, As speciation and cyanobacterial growth in phosphate-modified Microcystis aeruginosa cultures treated with arsenate were investigated under laboratory conditions. Marked growth inhibition was observed when arsenate was added. The inhibition effect of 1 mM arsenate was lower than that of 10 mM arsenate. Increasing phosphate supply (0-175 mM) in the medium decreased the inhibition of As. In the medium, arsenate, arsenite, and dimethylarsenicals (DMA) occurred under phosphate-deprivation (0 mM) and phosphate-excess (175 mM) conditions. However, only arsenate and DMA were detected under phosphate-limited (1 mM) and phosphate-rich (10 mM) conditions. Moreover, arsenite and DMA concentrations had significantly positive correlation with the biomass production of M. aeruginosa in the existence of phosphate. Arsenic speciation was more significantly affected by phosphate levels than arsenate concentrations. Recovery of total As content in M. aeruginosa culture medium increased with the increasing phosphate supply. The duration of arsenate contamination in the culture of M. aeruginosa had no influence on the variation of As species but affected the concentration of them in the medium under the phosphateexcess condition. This demonstrated that the effect of M. aeruginosa on As speciation was not related to the duration of As contamination under the phosphate-excess condition. Environ.

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Section: Introductionmentioning

confidence: 99%

Arsenic speciation and effect of arsenate inhibition in a Microcystis aeruginosa culture medium under different phosphate regimes

Guo

Gong

Wang

et al. 2011

Enviro Toxic and Chemistry

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“…Millions of people have been exposed to arsenic contamination through drinking water. In some regions of Pakistan, drinking water comes from groundwater and surface water, including rivers, lakes and reservoirs (Duker et al, 2005). The present free style way of disposing agricultural, industrial and domestic effluents into natural water-bodies results in serious surface and groundwater contamination (Abdel-Ghani and Elchaghaby, 2007;Okafor and Opuene, 2007;Samarghandi et al, 2007;Abdel-Ghani et al, 2009;Karimi et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Arsenic in soil, vegetation and water of a contaminated region

Zandsalimi

Karimi

Kohandel

2011

Int. J. Environ. Sci. Technol.

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Arsenic concentrations of surface waters, soils and plants were surveyed in three contaminated villages of Bijar County. Total arsenic in water samples (4.5 to 280 µg/L) was correlated with electrical conductivity, total dissolved solid, total hardness, alkalinity, chloride, sulphate, bicarbonate, calcium and sodium (p<0.001). Total arsenic in the soils ranged from 105.4 to 1500 mg/kg. Some of the soil factors play an important role in soil arsenic content and its bioavailability for organisms. In general, the arsenic concentrations in plants were low, especially in the most common wild species. Among 13 plant species, the highest mean arsenic concentration was found in leaves of Mentha Longifolia (79.4 mg/kg). Arsenic levels in soils and plants were positively correlated, while the ability of the plants to accumulate the element, expressed by their biological accumulation coefficients and arsenic transfer factors, was independent of the soil arsenic concentration. Relationships between the arsenic concentrations in plants, soils and surface water and the environmental aspects of these relationships have been discussed in comparison with literature data. The accumulation of arsenic in environmental samples (soil, sediment, water, plant, etc.) poses a potential risk to human health due to the transfer of this element in aquatic media, their uptake by plants and subsequent introduction into the food chain.

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“…Uthus [4]), it is widely regarded as a toxic element that affects human health. There is abundant literature describing the metabolism, toxicity and carcinogenesis of arsenic [5][6][7][8]. The toxicity of As is related to the different chemical forms and oxidation states in which it can be found.…”

Section: Introductionmentioning

confidence: 99%

“…In some of the different specific reviews about As in the environment published since the 1980's to nowadays, the presence of arsenic in the atmosphere is not considered (Duker et al [7], Singh et al [9]). In others, it is just mentioned briefly, indicating that As is mainly related to the particulate matter present in the air, as in the review of Mandal and Suzuki [1].…”

mentioning

confidence: 99%

Analytical approaches for arsenic determination in air: A critical review

Sánchez-Rodas

Campa

Alsioufi

2015

Analytica Chimica Acta

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This review describes the different steps involved in the determination of arsenic in air, considering the particulate matter (PM) and the gaseous phase. The review focuses on sampling, sample preparation and instrumental analytical techniques for both total arsenic determination and speciation analysis. The origin, concentration and legislation concerning arsenic in ambient air are also considered. The review intends to describe the procedures for sample collection of total suspended particles (TSP) or particles with a certain diameter expressed in microns (e.g. PM10 and PM2.5), or the collection of the gaseous phase containing gaseous arsenic species. Sample digestion of the collecting media for PM is

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Arsenic geochemistry and health

Cited by 515 publications

References 156 publications

Arsenic speciation and effect of arsenate inhibition in a Microcystis aeruginosa culture medium under different phosphate regimes

Arsenic speciation and effect of arsenate inhibition in a Microcystis aeruginosa culture medium under different phosphate regimes

Arsenic in soil, vegetation and water of a contaminated region

Analytical approaches for arsenic determination in air: A critical review

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