The DOI matches its Crossref record; 20 of the 20 references it cites were found in a registry or an index.
Methyl Arsenic Adsorption and Desorption Behavior on Iron Oxides
Abstract
In virtually all Earth surface environments, methylated forms of arsenic can be found. Because of the widespread distribution and toxicity of methyl-arsenic compounds, their adsorption by soil minerals is of considerable interest. The objective of this study was to compare the adsorption and desorption behavior of methylarsonic acid (MMAsV), methylarsonous acid (MMAsIII), dimethylarsinic acid (DMAsV), dimethylarsinous acid (DMAsIII), arsenate (iAsV), and arsenite (iAsIII) on iron oxide minerals (goethite and 2-line ferrihydrite) by means of adsorption isotherms, adsorption envelopes, and desorption envelopes (using sulfate and phosphate as desorbing ligands). MMAsIII and DMAsIII were not appreciably retained by goethite or ferrihydrite within the pH range of 3 to 11, while iAsIII was strongly adsorbed to both iron oxides. MMAsV and iAsV were adsorbed in higher amounts than DMAsV on goethite and ferrihydrite at all pH values studied. MMAsV and iAsV exhibited high adsorption affinities on both goethite and ferrihydrite from pH 3 to 10, while DMAsV was adsorbed only at pH values below 8 by ferrihydrite and below 7 by goethite. All arsenic compounds were desorbed more efficiently by phosphate than sulfate. MMAsV, iAsV, and DMAsV each exhibited adsorption characteristics suggesting specific adsorption on both goethite and ferrihydrite. Increased methyl substitution resulted in both decreased adsorbed arsenic at low arsenic concentrations in solution and increased ease of arsenic release from the iron oxide surface.
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Cites
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Arsenate Adsorption on an Fe−Ce Bimetal Oxide Adsorbent: Role of Surface Properties
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Nanotechnology Based Solutions for Wastewater Treatment
Baruah, A., Chaudhary, V., Malik, R., & Tomer, V. K. (2019) · Nanotechnology in Water and Wastewater Treatment · doi:10.1016/b978-0-12-813902-8.00017-4 · Cited by 121
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Evidences on As(III) and As(V) interaction with iron(III) oxides: Hematite and goethite
Ajith, N., Satpati, A. K., Debnath, A. K., & Swain, K. K. (2021) · Journal of Environmental Science and Health, Part A · doi:10.1080/10934529.2021.1959173 · Cited by 19
Metadata
- Authors
- Lafferty, B. J., & Loeppert, R. H.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2005-02-18
- Volume
- 39
- Issue
- 7
- Pages
- 2120-2127
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2061129723
- Cited by
- 273
- References
- 20
- FWCI
- 9.23
- Type
- journal article
- Language
- en
- Open access
- closed
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