title: Human hair mercury levels in the Wanshan mercury mining area, Guizhou Province, China.
abstract: The total mercury (T-Hg) and methyl mercury (Me-Hg) concentrations in the hair were measured to evaluate mercury (Hg) exposure for the residents in Da-shui-xi Village (DSX) and Xia-chang-xi Village (XCX) in the Wanshan Hg mining area, Guizhou Province, Southwestern China. The mean concentrations in the hair of DSX residents were 5.5 ± 2.7 μg/g and 1.9 ± 0.9 μg/g for T-Hg and Me-Hg, respectively. The concentrations in the hair of XCX residents were 3.3 ± 1.4 μg/g and 1.2 ± 0.5 μg/g for T-Hg and Me-Hg, respectively. Hair Me-Hg concentrations were significantly correlated to T-Hg (r = 0.42, P < 0.01) in the two sites; on average, hair Me-Hg concentration accounted for 40 and 44% of T-Hg for DSX and XCX residents, respectively. Age has no obvious correlation with hair Hg and the hair Hg levels showed a significant gender difference, with higher T-Hg and Me-Hg concentrations in the hair from males than females. The rice collected from the two sites showed high levels of T-Hg and Me-Hg concentration. The results indicated a certain Hg exposure for the residents in DSX and XCX in the Wanshan Hg mining area.
authors.affiliation: State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Li
authors.forename: Xinbin
authors.initials: X
authors.lastname: Feng
authors.forename: Guangle
authors.initials: G
authors.lastname: Qiu
authors.forename: Lihai
authors.initials: L
authors.lastname: Shang
authors.forename: Guanghui
authors.initials: G
authors.lastname: Li
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002849:Chromatography, Gas; D004781:Environmental Exposure; D004784:Environmental Monitoring; D004785:Environmental Pollutants / Q000032:analysis*; D005260:Female; D005506:Food Contamination / Q000032:analysis*; D006197:Hair / Q000737:chemistry*; D006801:Humans; D008297:Male; D008628:Mercury / Q000032:analysis*; D008767:Methylmercury Compounds / Q000032:analysis*; D008875:Middle Aged; D008906:Mining; D012275:Oryza / Q000737:chemistry*; D013050:Spectrometry, Fluorescence
chemical_list: D004785:Environmental Pollutants; D008767:Methylmercury Compounds; D008628:Mercury