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Science 13 May 1983:
Vol. 220. no. 4598, pp. 711 - 712
DOI: 10.1126/science.220.4598.711
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Articles

Photochemical Formation of Hydrogen Peroxide in Surface and Ground Waters Exposed to Sunlight

WILLIAM J. COOPER 1 and ROD G. ZIKA 2

1 Drinking Water Research Center, Florida International University, Miami 33199
2 Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, Florida 33149

A rapid increase in the concentration of hydrogen peroxide was observed when samples of natural surface and ground water from various locations in the United States were exposed to sunlight. The hydrogen peroxide is photochemically generated from organic constituents present in the water; humic materials are believed to be the primary agent producing the peroxide. Studies with superoxide dismutase suggest that the superoxide anion is the precursor of the peroxide.

Submitted on November 22, 1982
Revised on January 21, 1983


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