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冯新斌, Xiangyang
Environment International 32 (2006) 883-890,-0001,():
-1年11月30日
Total heavy metal (Cd, Cr, Cu, Pb and Zn) concentrations were evaluated in smelting waste, soil, crop and moss samples collected from the Hezhang artisanal zinc smelting areas, Guizhou, China. Soil samples from the cornfield near the smelting sites contained extremely high Cd (5.8-74 mg kg−1), Pb (60-14,000 mg kg−1) and Zn (260–16,000 mg kg−1) concentrations. Elevated heavy metal concentrations were also found in corn plants and total Pb (0.80-1.5 mg kg−1) and Cd (0.05-0.76 mg kg−1) concentrations in corn grain have totally or partially exceeded the national guidance limits for foodstuff. Thus, the soil-to-crop transfer of heavy metals might pose a potential health risk to the local residents. Similar to the high heavy metal levels in soil and corn, Cd, Cr, Cu, Pb and Zn concentrations in moss samples collected from the smelting sites ranged from 10 to 110, 10 to 55, 26 to 51, 400 to 1200 and 330 to 1100 mg kg−1, respectively, exhibiting a local spatial pattern of metals deposition from the atmosphere. Based on examination of Zn/Cd and Pb/Cd ratios of the analyzed samples, we have distinguished between the flue gas dust derived and smelting waste derived metals in different environmental compartments.
Zinc
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冯新斌, Xinbin
Science of the Total Environment 368 (2006) 47-55,-0001,():
-1年11月30日
Artisanal
Mercury,
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冯新斌, Xiangyang
Atmospheric Environment 40 (2006) 4228-4233,-0001,():
-1年11月30日
Using
Cadmium,
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冯新斌, Xinbin
Anal Bioanal Chem (2004) 380: 683-689,-0001,():
-1年11月30日
thermal desorption for separating Hg species, and inductively coupled plasma mass spectrometry (ICP–MS) for identification and quantification of Hg. Coal fly ash spiked with different Hg compounds (e.g. Hg0, HgCl2, HgO, and HgS) was used for qualitative calibration. A standard reference material with a certified value for Hg concentration was used to evaluate the method. When the temperature of the furnace was programmed at a linear rate of increase of 50°min1, different Hg compounds could clearly be separated. Three airborne particulate matter samples were collected in parallel in Toronto, ON, Canada and analyzed using this method. Reproducible results were obtained and Hg0, HgCl2, HgO, and HgS species from these samples were detected.
Mercury, Speciation, Airborne particulate matter, ICP–MS, Thermal desorption
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