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Stable Mercury Isotopes in Polished Rice (Oryza sativa L.) and Hair from Rice Consumers
Sarah E. Rothenberg;   Runsheng Yin;  James P. Hurley;  David P. Krabbenhoft;  Yuyun Ismawati;  Chuan Hong;   Alexis Donohue
2017
Source PublicationEnvironmental Science & Technology
Volume51Issue:11Pages:6480-6488
Abstract

Mercury (Hg) isotopic signatures were characterized in polished rice samples from China, U.S., and Indonesia (n = 45). Hg isotopes were also analyzed in paired hair samples for participants from China (n = 21). For the latter, we also quantified the proportion of methylmercury intake through rice (range: 31-100%), and the weekly servings of fish meals (range: 0-5.6 servings/weekly). For these participants, 29% (n = 6) never ingested fish, 52% (n = 11) ingested fish < twice/weekly, and 19% (n = 4) ingested fish >= twice/weekly. In rice and hair, both mass-dependent fractionation (MDF, reported as delta Hg-202) and mass-independent fractionation (MIF, reported as Delta Hg-199) of Hg isotopes were observed. Compared to rice, hair delta Hg-202 values were enriched on average (+/- 1 standard deviation) by 1.9 +/- 0.61 parts per thousand, although the range was wide (range: 0.45 parts per thousand, 3.0 parts per thousand). Hair Delta Hg-199 was significantly inversely associated with %methylmercury intake from rice (Spearmans rho = -0.61, p < 0.01, n = 21), i.e., as the proportion of methylmercury intake from rice increased, MIF decreased. Additionally, hair Delta Hg-199 was significantly higher for participants ingesting fish >= twice/weekly compared to those who did not ingest fish or ingested fish < twice/weekly (ANOVA, p < 0.05, n = 21); Overall, results suggest that Hg isotopes (especially MIF) in human hair can be used to distinguish methylmercury intake from rice versus fish.

Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/8091
Collection矿床地球化学国家重点实验室
Affiliation1.Department of Environmental Health Sciences, University of South Carolina, Columbia, South Carolina 29208, United States
2.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
3.Environmental Chemistry and Technology Program, University of Wisconsin−Madison, Madison, Wisconsin 53706, United States
4.Department of Civil and Environmental Engineering, University of Wisconsin−Madison, Madison, Wisconsin 53706, United States
5.U.S. Geological Survey, 8505 Research Way, Middleton, Wisconsin 53562, United States
6.BaliFokus Foundation, Mandalawangi No. 5, Jalan Tukad Tegalwangi, Denpasar 80223, Bali, Indonesia
7.Medical Research-International Health Center for International Health, Medical Center of the University of Munich, Munich, Germany
Recommended Citation
GB/T 7714
Sarah E. Rothenberg; Runsheng Yin;James P. Hurley;David P. Krabbenhoft;Yuyun Ismawati;Chuan Hong; Alexis Donohue. Stable Mercury Isotopes in Polished Rice (Oryza sativa L.) and Hair from Rice Consumers[J]. Environmental Science & Technology,2017,51(11):6480-6488.
APA Sarah E. Rothenberg; Runsheng Yin;James P. Hurley;David P. Krabbenhoft;Yuyun Ismawati;Chuan Hong; Alexis Donohue.(2017).Stable Mercury Isotopes in Polished Rice (Oryza sativa L.) and Hair from Rice Consumers.Environmental Science & Technology,51(11),6480-6488.
MLA Sarah E. Rothenberg; Runsheng Yin;James P. Hurley;David P. Krabbenhoft;Yuyun Ismawati;Chuan Hong; Alexis Donohue."Stable Mercury Isotopes in Polished Rice (Oryza sativa L.) and Hair from Rice Consumers".Environmental Science & Technology 51.11(2017):6480-6488.
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