Molecular mechanisms of dimethylarsinic acid adsorption onto aluminum substituted ferrihydrite surfaces

Author:

Ge Yiting1,Wang Jiaqi1,Guo Fayang2,Yuan Meng1,Wang Wentao1,Li Jiangshan3,Zhang Jing4,Feng Xionghan1ORCID,Tan Wenfeng1,Wu Yupeng1,Yin Hui1ORCID

Affiliation:

1. Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural affairs, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China

2. Institute of Resource and Environment, Henan Polytechnic University, Jiaozuo 454000, China

3. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China

4. Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China

Abstract

Aluminum substitution in ferrihydrite promotes the formation of monodentate mononuclear and outer-sphere complexes of dimethylarsinic acid on the mineral surfaces at the expense of bidentate binuclear complexes at pH 6.

Funder

National Natural Science Foundation of China

Fundamental Research Funds for the Central Universities

Publisher

Royal Society of Chemistry (RSC)

Reference54 articles.

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3. M. M.Hussain , I.Bibi , M.Shahid , S. M.Shaheen , M. B.Shakoor , S.Bashir , F.Younas , J.Rinklebe and N. K.Niazi , Biogeochemical cycling, speciation and transformation pathways of arsenic in aquatic environments with the emphasis on algae, in Comprehensive Analytical Chemistry , ed. A. C. Duarte and V. Reis , Elsevier , 2019 , vol. 85 , pp. 15–51

4. Organoarsenical compounds: Occurrence, toxicology and biotransformation

5. Earthworms as agents for arsenic transport and transformation in roxarsone-impacted soil mesocosms: A µXANES and modeling study

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