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Citation
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HERO ID
1015789
Reference Type
Journal Article
Title
Antimony (Sb) and Arsenic (As) in Sb Mining Impacted Paddy Soil from Xikuangshan, China: Differences in Mechanisms Controlling Soil Sequestration and Uptake in Rice
Author(s)
Okkenhaug, G; Zhu, YG; He, J; Li, X; Luo, L; Mulder, J
Year
2012
Is Peer Reviewed?
1
Journal
Environmental Science & Technology
ISSN:
0013-936X
EISSN:
1520-5851
Volume
46
Issue
6
Page Numbers
3155-3162
Language
English
PMID
22309044
DOI
10.1021/es2022472
Web of Science Id
WOS:000301630200017
URL
https://pubs.acs.org/doi/10.1021/es2022472
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Abstract
Foods produced on soils impacted by antimony (Sb) mining activities are a potential health risk due to plant uptake of the contaminant metalloids (Sb) and arsenic (As). Here we report for the first time the chemical speciation of Sb in soil and porewater of flooded paddy soil, impacted by active Sb mining, and its effect on uptake and speciation in rice plants (Oryza sativa L. cv Jiahua). Results are compared with behavior and uptake of As. Pot experiments were conducted under controlled conditions in a climate chamber over a period of 50 days. In pots without rice plants, flooding increased both the concentration of dissolved Sb (up to ca. 2000 μg L(-1)) and As (up to ca. 1500 μg L(-1)). When rice was present, Fe plaque developing on rice roots acted as a scavenger for both As and Sb, whereby the concentration of As, but not Sb, in porewater decreased substantially. Dissolved Sb in porewater, which occurred mainly as Sb(V), correlated with Ca, indicating a solubility governed by Ca antimonate. No significant differences in bioaccumulation factor and translocation factor between Sb and As were observed. Greater relative concentration of Sb(V) was found in rice shoots compared to rice root and porewater, indicating either a preferred uptake of Sb(V) or possibly an oxidation of Sb(III) to Sb(V) in shoots. Adding soil amendments (olivine, hematite) to the paddy soil had no effect on Sb and As concentrations in porewater.
Tags
IRIS
•
Arsenic Hazard ID
1. Initial Lit Search
PubMed
ToxNet
4. Considered through Oct 2015
6. Cluster Filter through Oct 2015
•
Arsenic (Inorganic)
1. Literature
PubMed
Toxline, TSCATS, & DART
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