Reaction kinetics of hydrogen peroxide with copper and iron in sea water

Journal Article · Sat Aug 01 00:00:00 EDT 1987 · Environ. Sci. Technol.; (United States)

DOI:https://doi.org/10.1021/es00162a012· OSTI ID:5089101

Moffett, J W; Zika, R G

The oxidation of Fe(II) and Cu(I) and the reduction of Fe(III) and Cu(II) by hydrogen peroxide in sea water have been studied to understand their mechanisms and probable significance in the upper marine water column. At 10/sup -7/ M H/sub 2/O/sub 2/, a level commonly found in surface sea water, reaction with H/sub 2/O/sub 2/ is the dominant oxidation pathway for Fe(II). Reduction of Fe(III) by peroxide was not observed in the pH range 7-8. Reduction of Cu(II) and oxidation of Cu(I) by H/sub 2/O/sub 2/ contribute to a dynamic redox cycling of that element in the upper water column. Calculations based on these data indicate that CU(I) oxidation and FE(II) oxidation by H/sub 2/O/sub 2/ are at least as important as nitrite photolysis as a source of OH radicals in the ocean. 47 references, 6 figures, 2 tables.

• Research Organization: Univ. of Miami, FL (USA)
• OSTI ID: 5089101
• Journal Information: Environ. Sci. Technol.; (United States), Vol. 21:8
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
COPPER
REDOX REACTIONS
WATER CHEMISTRY
HYDROGEN PEROXIDE
IRON
EXPERIMENTAL DATA
HYDROXYL RADICALS
SEAWATER
WATER POLLUTION
CHEMICAL REACTIONS
CHEMISTRY
DATA
ELEMENTS
HYDROGEN COMPOUNDS
INFORMATION
METALS
NUMERICAL DATA
OXYGEN COMPOUNDS
PEROXIDES
POLLUTION
RADICALS
TRANSITION ELEMENTS
WATER
520200* - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)