期刊
ENVIRONMENTAL GEOLOGY
卷 55, 期 5, 页码 1055-1059出版社
SPRINGER
DOI: 10.1007/s00254-007-1054-6
关键词
Antarctica; arsenic; penguin droppings; environmental pollution
资金
- National Natural Science Foundation of China [40776001, 40306001]
- Foundation for the Author of National Excellent Doctoral Dissertation of People's Republic of China [200354]
- Ministry of Education of China
- Chinese Academy of Sciences
- Chinese Arctic and Antarctic Administration
Heavy/toxic metals have been widely investigated in the Antarctic. However, there are rare reports on arsenic up to now. Here, we analyzed a 1,800-year record of arsenic concentration in lake sediments affected by penguin droppings. We found that arsenic enriches in the penguin dropping sediments with 12.41 +/- 0.45 mu g/g (on dry weight), which is about two times higher than the one in the background sediments with absence of penguin. Historical change in arsenic concentration was found to significantly correlate with the fluctuation of penguin number, indicating that penguin activity will result in the enrichment of arsenic somewhere in the maritime Antarctic.
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