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Stable Mercury Isotopes in Polished Rice (Oryza sativa L.) and Hair from Rice Consumers Sarah Rothenberg, Runsheng Yin, James P. Hurley, David P. Krabbenhoft, Yuyun Ismawati, Chuan Hong, and Alexis Donohue Environ. Sci. Technol., Just Accepted Manuscript • Publication Date (Web): 09 May 2017 Downloaded from http://pubs.acs.org on May 12, 2017
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Environmental Science & Technology
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STABLE MERCURY ISOTOPES IN POLISHED RICE (Oryza sativa L.) AND HAIR FROM
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RICE CONSUMERS
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Sarah E. Rothenberg,a,* Runsheng Yin,b,c,d James P. Hurley,c,d David P. Krabbenhoft,e Yuyun
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Ismawati,f,g Chuan Hong,a Alexis Donohuea
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Department of Environmental Health Sciences, University of South Carolina, Columbia, SC 29208, USA; b State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China; c Environmental Chemistry and Technology Program, University of Wisconsin–Madison, Madison, WI 53706, USA; d Department of Civil and Environmental Engineering, University of Wisconsin–Madison, Madison, WI 53706, USA; e U.S. Geological Survey, 8505 Research Way, Middleton, WI 53562, USA; f BaliFokus Foundation, Mandalawangi No. 5, Jalan Tukad Tegalwangi, Denpasar 80223, Bali, Indonesia; g Medical Research-International Health Center for International Health, Medical Center of the University of Munich, Munich, Germany * Corresponding author: Sarah E. Rothenberg, D.Env. Assistant Professor University of South Carolina Arnold School of Public Health Department of Environmental Health Sciences 921 Assembly Street, Room 401 Columbia, South Carolina, 29208, USA Office: +1 803-777-0045 Email:
[email protected] Runsheng Yin Email:
[email protected] James P. Hurley Email:
[email protected] David P. Krabbenhoft Email:
[email protected] Yuyun Ismawati Email:
[email protected] Chuan Hong Email:
[email protected] Alexis Donohue Email:
[email protected] ACS Paragon Plus Environment
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Environmental Science & Technology
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ABSTRACT Mercury (Hg) isotopic signatures were characterized in polished rice samples from
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China, USA, and Indonesia (n=45). Hg isotopes were also analyzed in paired hair samples for
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participants from China (n=21). For the latter, we also quantified the proportion of
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methylmercury intake through rice (range: 31-100%), and the weekly servings of fish meals
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(range: 0-5.6 servings/weekly). For these participants, 29% (n=6) never ingested fish, 52%
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(n=11) ingested fish 10 ng/g, and therefore retained participants with
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higher hair THg. Hair THg concentrations for the second and third trimesters were significantly
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positively correlated, when log10-transformed (Pearson's rho=0.47, p
