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result sql = Mercury distribution and speciation in water and fish from abandoned Hg mines in Wanshan, Guizhou province, China.
Mercury distribution and speciation in water and fish from abandoned Hg mines in Wanshan, Guizhou province, China.
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char = );code = 41
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char = H;code = 72
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char = ;code = 32
char = W;code = 87
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char = a;code = 97
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char = H;code = 72
char = g;code = 103
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char = g;code = 103
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char = 1;code = 49
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char = 2;code = 50
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char = ;code = 32
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char = g;code = 103
char = ;code = 32
char = w;code = 119
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char = r;code = 114
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char = i;code = 105
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char = ;code = 32
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char = c;code = 99
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char = n;code = 110
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char = a;code = 97
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char = ;code = 32
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char = s;code = 115
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char = t;code = 116
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char = t;code = 116
char = e;code = 101
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char = s;code = 115
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char = g;code = 103
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char = ;code = 32
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char = i;code = 105
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char = y;code = 121
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char = ;code = 32
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char = d;code = 100
char = e;code = 101
char = r;code = 114
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char = i;code = 105
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char = f;code = 102
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char = m;code = 109
char = ;code = 32
char = h;code = 104
char = i;code = 105
char = s;code = 115
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = H;code = 72
char = g;code = 103
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = n;code = 110
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char = g;code = 103
char = ;code = 32
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char = i;code = 105
char = t;code = 116
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char = s;code = 115
char = ;code = 32
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char = n;code = 110
char = ;code = 32
char = t;code = 116
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char = e;code = 101
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char = W;code = 87
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char = s;code = 115
char = h;code = 104
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = r;code = 114
char = e;code = 101
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char = <;code = 60
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char = >;code = 62
result sql = Concentrations of total mercury (Hg(T)), methylmercury (MeHg), and its speciation in water samples as well as fish collected from abandoned Hg mines in Wanshan, Guizhou province, China, were measured to show regional dispersion of Hg contaminations that are not well known. High Hg(T) and MeHg(T) (total methylmercury) concentrations obtained in waters from mining areas, ranged from 15 to 9300 ng/l and 0.31 to 25 ng/l, respectively. MeHg(T) were not correlated with Hg(T), whereas, peak values in both cases were in accord with high concentrations of particulate fraction, which appeared to be enhanced during high-flow regime with ratios reaching to 99%. Elevated Hg concentrations in the particulate form indicated that particles released from Hg mining tailings (calcines) might be an important pathway of Hg to the aquatic system. The concentrations of total Hg in fish muscle were elevated ranging from 0.061 to 0.68 mg/kg, but MeHg were generally low ranging from 0.024 to 0.098 mg/kg with a mean ratio of 28%. The concentrations and distribution patterns of Hg in aquatic systems suggested derivation from historic Hg mining sites in the Wanshan area.

Publication: Sci. Total Environ. 2009 Sep 1 ;407(18)::5162-8. :doi: 10.1016/j.scitotenv.2009.06.007.
Publication Date: 2009 Sep 1
Study Author(s): Qiu, Guangle;Feng, Xinbin;Wang, Shaofeng;Fu, Xuewu;Shang, Lihai;
Institution: State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, PR China.
Shortcut link to this study:
Concentrations of total mercury (Hg(T)), methylmercury (MeHg), and its speciation in water samples as well as fish collected from abandoned Hg mines in Wanshan, Guizhou province, China, were measured to show regional dispersion of Hg contaminations that are not well known. High Hg(T) and MeHg(T) (total methylmercury) concentrations obtained in waters from mining areas, ranged from 15 to 9300 ng/l and 0.31 to 25 ng/l, respectively. MeHg(T) were not correlated with Hg(T), whereas, peak values in both cases were in accord with high concentrations of particulate fraction, which appeared to be enhanced during high-flow regime with ratios reaching to 99%. Elevated Hg concentrations in the particulate form indicated that particles released from Hg mining tailings (calcines) might be an important pathway of Hg to the aquatic system. The concentrations of total Hg in fish muscle were elevated ranging from 0.061 to 0.68 mg/kg, but MeHg were generally low ranging from 0.024 to 0.098 mg/kg with a mean ratio of 28%. The concentrations and distribution patterns of Hg in aquatic systems suggested derivation from historic Hg mining sites in the Wanshan area.
PMID: 19576620

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