Acid Rain: Ionic Correlations in the Eastern United States, 1980-1981

American Association for the Advancement of Science (AAAS) - Tập 225 Số 4660 - Trang 407-409 - 1984
Eville Gorham1, Frank B. Martin2, Jack T. Litzau2
1Department of Ecology and Behavioral Biology, University of Minnesota, Minneapolis 55455.
2Statistical Center, University of Minnesota, St. Paul 55108

Tóm tắt

Hydrogen ions in precipitation are correlated much more closely with sulfate than with nitrate, whereas ammonium ions are correlated more closely with nitrate than with sulfate. Target loadings of 14 to 16 kilograms of wet sulfate deposition per hectare per year, instead of 20 as suggested hitherto, are probably necessary to produce average p H values of 4.6 to 4.7, the approximate boundary levels for damage to aquatic ecosystems. Cluster analysis reveals that there are three linked groups of ions related to air pollution, agriculture, and sea spray.

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Thông tin xuất bản

American Association for the Advancement of Science (AAAS)

Tập 225 Số 4660

407-409

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