Concepedia

John David Hem

JD

30

Publications

2.6K

Citations

26

H-Index

1948

Active since

Affiliations

United States Geological Survey(Current)

Menlo School

John David Hem is an author at United States Geological Survey specializing in engineering, chemistry, and environmental chemistry.

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Publications per year

1948–1994

30

Publications

30

Chemical composition of subsurface waters

D.E. White, John David Hem, G.S. Waring · USGS professional paper · 1963 · 340 citations · Full text

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Chemical Factors that Influence the Availability of Iron and Manganese in Aqueous Systems

John David Hem · Geological Society of America Bulletin · 1972 · 200 citations

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Redox processes at surfaces of manganese oxide and their effects on aqueous metal ions

John David Hem · Chemical Geology · 1978 · 195 citations

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Reactions of metal ions at surfaces of hydrous iron oxide

John David Hem · Geochimica et Cosmochimica Acta · 1977 · 193 citations

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Nonequilibrium models for predicting forms of precipitated manganese oxides

John David Hem, Carol J. Lind · Geochimica et Cosmochimica Acta · 1983 · 180 citations

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