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result sql = Characterization of mercury species in brown and white rice (Oryza sativa L.) grown in water-saving paddies.
Characterization of mercury species in brown and white rice (Oryza sativa L.) grown in water-saving paddies.
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char = n;code = 110
char = o;code = 111
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char = n;code = 110
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char = g;code = 103
char = (;code = 40
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char = I;code = 73
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result sql = In China, total Hg (HgT) and methylmercury (MeHg) were quantified in rice grain grown in three sites using water-saving rice cultivation methods, and in one Hg-contaminated site, where rice was grown under flooded conditions. Polished white rice concentrations of HgT (water-saving: 3.3±1.6 ng/g; flooded: 110±9.2 ng/g) and MeHg (water-saving 1.3±0.56 ng/g; flooded: 12±2.4 ng/g) were positively correlated with root-soil HgT and MeHg contents (HGT: r2=0.97,

MEHG: r2=0.87, p<0.05 for both), which suggested a portion of Hg species in rice grain was derived from the soil, and translocation of Hg species from soil to rice grain was independent of irrigation practices and Hg levels, although other factors may be important. Concentrations of HgT and other trace elements were significantly higher in unmilled brown rice (p<0.05), while MeHg content was similar (p>0.20), indicating MeHg infiltrated the endosperm (i.e., white rice) more efficiently than inorganic Hg(II).

Publication: Environ. Pollut. 2011 May ;159(5)::1283-9. :doi: 10.1016/j.envpol.2011.01.027.
Publication Date: 2011 May
Study Author(s): Rothenberg, Sarah E;Feng, Xinbin;Dong, Bin;Shang, Lihai;Yin, Runsheng;Yuan, Xiaobo;
Institution: State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 46 Guanshui Lu, Guiyang 550002, PR China. [email protected]
Shortcut link to this study:
In China, total Hg (HgT) and methylmercury (MeHg) were quantified in rice grain grown in three sites using water-saving rice cultivation methods, and in one Hg-contaminated site, where rice was grown under flooded conditions. Polished white rice concentrations of HgT (water-saving: 3.3±1.6 ng/g; flooded: 110±9.2 ng/g) and MeHg (water-saving 1.3±0.56 ng/g; flooded: 12±2.4 ng/g) were positively correlated with root-soil HgT and MeHg contents (HGT: r2=0.97,

MEHG: r2=0.87, p<0.05 for both), which suggested a portion of Hg species in rice grain was derived from the soil, and translocation of Hg species from soil to rice grain was independent of irrigation practices and Hg levels, although other factors may be important. Concentrations of HgT and other trace elements were significantly higher in unmilled brown rice (p<0.05), while MeHg content was similar (p>0.20), indicating MeHg infiltrated the endosperm (i.e., white rice) more efficiently than inorganic Hg(II).
PMID: 21349615

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