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author:

Yin, Naiyi (Yin, Naiyi.) [1] | Cai, Xiaolin (Cai, Xiaolin.) [2] | Du, Huili (Du, Huili.) [3] | Zhang, Zhennan (Zhang, Zhennan.) [4] | Li, Zejiao (Li, Zejiao.) [5] | Chen, Xiaochen (Chen, Xiaochen.) [6] | Sun, Guoxin (Sun, Guoxin.) [7] | Cui, Yanshan (Cui, Yanshan.) [8]

Indexed by:

EI

Abstract:

Arsenic (As) speciation is essential in assessing health risks from As-contaminated soil. Release of soil-bound arsenic, As transformation by human gut microbiota, and the subsequent intestinal absorption of soil As metabolites were evaluated. A colon microbial community in a dynamic human gut model and the intestinal epithelial cell line Caco-2 were cultured. Arsenic speciation analysis and absorption of different As species were undertaken. In this study, soil As release (3.7–581.2 mg kg−1) was observed in the colon. Arsenic in the colon digests was transformed more quickly than that in the soil solid phase. X-ray absorption near-edge spectroscopy (XANES) analysis showed that 44.2–97.6% of arsenite [As(III)] generated due to arsenate [As(V)] reduction was in the soil solid phase after the colon phase. We observed a high degree of cellular absorption of soil As metabolites, exhibiting that the intestinal absorption of monomethylarsonic acid and As(III) (33.6% and 30.2% resp.) was slightly higher than that of dimethylarsinic acid and As(V) (25.1% and 21.7% resp.). Our findings demonstrate that human gut microbiota can directly release soil-bound arsenic, particularly As-bearing amorphous Fe/Al-oxides. Determining As transformation and intestinal absorption simultaneously will result in an accurate risk assessment of human health with soil As exposures. © 2016 Elsevier Ltd

Keyword:

Arsenic Cell culture Health risks Iron compounds Metabolites Risk assessment Soil pollution Soils X ray absorption

Community:

  • [ 1 ] [Yin, Naiyi]College of Resources and Environment, University of Chinese Academy of Sciences, Beijing; 101408, China
  • [ 2 ] [Yin, Naiyi]Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085, China
  • [ 3 ] [Cai, Xiaolin]College of Resources and Environment, University of Chinese Academy of Sciences, Beijing; 101408, China
  • [ 4 ] [Cai, Xiaolin]Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085, China
  • [ 5 ] [Du, Huili]College of Resources and Environment, University of Chinese Academy of Sciences, Beijing; 101408, China
  • [ 6 ] [Du, Huili]Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085, China
  • [ 7 ] [Zhang, Zhennan]College of Resources and Environment, University of Chinese Academy of Sciences, Beijing; 101408, China
  • [ 8 ] [Zhang, Zhennan]Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085, China
  • [ 9 ] [Li, Zejiao]College of Resources and Environment, University of Chinese Academy of Sciences, Beijing; 101408, China
  • [ 10 ] [Li, Zejiao]Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085, China
  • [ 11 ] [Chen, Xiaochen]College of Environment and Resources, Fuzhou University, Fujian; 350108, China
  • [ 12 ] [Sun, Guoxin]Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085, China
  • [ 13 ] [Cui, Yanshan]College of Resources and Environment, University of Chinese Academy of Sciences, Beijing; 101408, China
  • [ 14 ] [Cui, Yanshan]Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085, China

Reprint 's Address:

  • [cui, yanshan]research center for eco-environmental sciences, chinese academy of sciences, beijing; 100085, china;;[cui, yanshan]college of resources and environment, university of chinese academy of sciences, beijing; 101408, china

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Source :

Chemosphere

ISSN: 0045-6535

Year: 2017

Volume: 168

Page: 358-364

4 . 4 2 7

JCR@2017

8 . 1 0 0

JCR@2023

ESI HC Threshold:247

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 26

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 5

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