Chemical speciation of antimony in marine algae

Kantin, Roger

doi:10.4319/lo.1983.28.1.0165

Cited by 33 publications

(7 citation statements)

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“…the arsenosugars described by Edmonds and Francesconi (198 1)) make up most of the soluble arsenic content ( Table 1). In contrast, the methylantimony compounds were found neither by us in marine phytoplankton (Table 1) nor by Kantin (1983) in macro-algae. Digestion of the phytoplankton samples with conc.…”

Section: Methylated Species Of Arsenic and Antimonycontrasting

confidence: 56%

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Arsenic, antimony, and germanium biogeochemistry in the Baltic Sea

Andreae¹,

Froelich²

1984

Tellus B

137

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Arsenic, antimony, and germanium species concentrations have been determined from five hydrographic stations along the central axis of the Baltic Sea from the Bornholm Basin to the Gulf of Finland. Arsenic and antimony concentrations are lower than in the open oceans and in most rivers. In the oxic waters, the pentavalent species of As and Sb predominate, while in the anoxic basins, the distribution shifts to the trivalent species and possibly some sulfo‐complexes. Methylated arsenic species make up a large fraction of dissolved As in the surface waters, and methylated species of As, Sb, and Ge are detectable throughout the water column. Germanic acid concentrations are about ten times higher than in the ocean and much higher than can be accounted for by fluvial input. The vertical distributions of arsenic, antimony, and germanium within the Baltic Sea are controlled by biogeochemical cycling, involving biogenic uptake, particulate scavenging and partial regeneration. A mass balance including river and atmospheric inputs, exchange with the Atlantic through the Belt Sea, and removal by sediment deposition suggests that anthropogenic inputs make a significant contribution to the budgets of all three elements, with atmospheric fluxes dominating the input of Ge to the Baltic.

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Section: Methylated Species Of Arsenic and Antimonycontrasting

confidence: 56%

“…Andreae and Klumpp (1979) have shown the ability of marine phytoplankton to reduce arsenic(V) to arsenic(II1) ic laboratory cultures. The presence of antimony(II1) in marine macro-algae was shown by Kantin (1983), who found that up to 30% of the antimony in Sargassum sp. is in the trivalent form.…”

Section: Resultsmentioning

confidence: 96%

Arsenic, antimony, and germanium biogeochemistry in the Baltic Sea

Andreae¹,

Froelich²

1984

Tellus B

137

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“…It is known that Sb(V) can be abiotically reduced to Sb(III) by Fe(II)-containing minerals (56)(57)(58). A marine macroalga, Sargassum sp., was the first reported organism able to reduce Sb(V) in seawater (59). In the treatment of leishmaniasis, several studies suggested that Sb(V), when used as a prodrug medicine, might be reduced in both the vertebrate host and the parasites (60)(61)(62)(63).…”

Section: Microbial Antimony Cyclementioning

confidence: 99%

Microbial Antimony Biogeochemistry: Enzymes, Regulation, and Related Metabolic Pathways

Wang

Oremland

et al. 2016

Appl Environ Microbiol

170

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e Antimony (Sb) is a toxic metalloid that occurs widely at trace concentrations in soil, aquatic systems, and the atmosphere. Nowadays, with the development of its new industrial applications and the corresponding expansion of antimony mining activities, the phenomenon of antimony pollution has become an increasingly serious concern. In recent years, research interest in Sb has been growing and reflects a fundamental scientific concern regarding Sb in the environment. In this review, we summarize the recent research on bacterial antimony transformations, especially those regarding antimony uptake, efflux, antimonite oxidation, and antimonate reduction. We conclude that our current understanding of antimony biochemistry and biogeochemistry is roughly equivalent to where that of arsenic was some 20 years ago. This portends the possibility of future discoveries with regard to the ability of microorganisms to conserve energy for their growth from antimony redox reactions and the isolation of new species of "antimonotrophs."

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“…Under anaerobic conditions, some microbes can reduce Sb(V) to Sb(III). Kantin (1983) first reported that the macroalgae Sargassum sp. can reduce Sb(V) to Sb(III) in seawater.…”

Section: Antimony Resistance and Mechanism Of Sb-oxidizing Bacteriamentioning

confidence: 99%

A Critical Review of Resistance and Oxidation Mechanisms of Sb-Oxidizing Bacteria for the Bioremediation of Sb(III) Pollution

et al. 2021

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Antimony (Sb) is a priority pollutant in many countries and regions due to its chronic toxicity and potential carcinogenicity. Elevated concentrations of Sb in the environmental originating from mining and other anthropogenic sources are of particular global concern, so the prevention and control of the source of pollution and environment remediation are urgent. It is widely accepted that indigenous microbes play an important role in Sb speciation, mobility, bioavailability, and fate in the natural environment. Especially, antimony-oxidizing bacteria can promote the release of antimony from ore deposits to the wider environment. However, it can also oxidize the more toxic antimonite [Sb(III)] to the less-toxic antimonate [Sb(V)], which is considered as a potentially environmentally friendly and efficient remediation technology for Sb pollution. Therefore, understanding its biological oxidation mechanism has great practical significance to protect environment and human health. This paper reviews studies of the isolation, identification, diversity, Sb(III) resistance mechanisms, Sb(III) oxidation characteristics and mechanism and potential application of Sb-oxidizing bacteria. The aim is to provide a theoretical basis and reference for the diversity and metabolic mechanism of Sb-oxidizing bacteria, the prevention and control of Sb pollution sources, and the application of environment treatment for Sb pollution.

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Chemical speciation of antimony in marine algae

Cited by 33 publications

References 0 publications

Arsenic, antimony, and germanium biogeochemistry in the Baltic Sea

Arsenic, antimony, and germanium biogeochemistry in the Baltic Sea

Microbial Antimony Biogeochemistry: Enzymes, Regulation, and Related Metabolic Pathways

A Critical Review of Resistance and Oxidation Mechanisms of Sb-Oxidizing Bacteria for the Bioremediation of Sb(III) Pollution

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