Seasonal patterns of heavy metal deposition to the snow on Lambert Glacier basin, East Antarctica
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- Seasonal patterns of heavy metal deposition to the snow on Lambert Glacier basin, East Antarctica
- Other Titles
- 동남극 램버트 지역에서 중금속 플럭스의 계절적 양상 연구
- Hur, Soon Do
- Biochemistry & Molecular Biology; Endocrinology & Metabolism; Toxicology; Zoology
- Heavy metals; Lambert Glacier basin; Seasonal variation; Snow
- Issue Date
- Hur, Soon Do, et al. 2007. "Seasonal patterns of heavy metal deposition to the snow on Lambert Glacier basin, East Antarctica". ATMOSPHERIC ENVIRONMENT, 41(38): 8567-8578.
- Al, V, Mn, Fe, Cu, As, Cd, Ba, Pb, Bi and U were determined in a continuous series of 46 snow samples from a 2.3-m snow pit, covering the time period from austral spring 1998 to summer 2002, at a site on the east side of the Lambert Glacier basin in East Antarctica. Concentrations are very low for all metals and differ by orders of magnitude from one metal to another, with the mean concentrations ranging from 0.028 pg g-1 for Bi to 165 pg g-1 for Al. It is estimated that anthropogenic contributions are dominant for Cu, Pb and probably As, in the snow in our study area while the natural contributions from rock and soil dust, sea-salt spray and volcanic emissions account for most of the measured concentrations of the other metals. Our snow profiles show pronounced seasonal variations for Mn, As, Ba, Pb and Bi throughout the year, but a very different situation is observed between different metals. These observations suggest that heavy metals determined in our samples are controlled by different transport and deposition mechanisms related to physical and chemical alterations in the properties and sources of aerosol.
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