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Acid precipitation in the northeastern United States

Cogbill, Charles V., Likens, Gene E.·1974·Water Resources Research

Abstract

Analysis of recent precipitation samples from the northeastern United States has shown a consistent p H of less than 4.4, when the expected p H based upon equilibrium with CO 2 would be 5.6. A stoichiometric formation process being assumed, some 65% of the acidity is due to H 2 SO 4, 30% to HNO 3, and less than 5% to HCl. The p H values may be predicted from chemical content and generally agree to within 0.1 p H unit with the observed p H. The distribution of acid precipitation encompasses most of the northeastern United States. This pattern apparently has existed since about 1950–1955, but the intensity of acid deposition, especially that due to HNO 3, has increased since then. Analysis of prevailing winds indicates that much of the acidity originates as a general source over industrial areas in the Midwest.

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Metadata

Authors
Cogbill, C. V., & Likens, G. E.
Venue
Water Resources Research
Published
1974-12
Volume
10
Issue
6
Pages
1133-1137
ISSN
  • 0043-1397 (ISSN-L)
  • 1944-7973
OpenAlex
W2054680869
Cited by
339
References
0
FWCI
11.11
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Acid precipitation in the northeastern United States. https://app.cochat.ai/papers/10.1029/wr010i006p01133
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Cogbill, C. V., & Likens, G. E. (1974). Acid precipitation in the northeastern United States. Water Resources Research. https://doi.org/10.1029/wr010i006p01133

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