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Dive into our publications and explore the science from the Environmental Health Program (Toxic Substances Hydrology and Contaminant Biology).

GeoHEALTH-USGS Newsletter

The GeoHEALTH–USGS Newsletter—published since 2004—provides information on USGS science activities pertinent to safeguarding the health of fish, wildlife, domesticated animals, and people from environmental exposures to contaminants and pathogens.

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January 1, 2000

Nitrogen biogeochemistry and surface-subsurface exchange in streams Nitrogen biogeochemistry and surface-subsurface exchange in streams

No abstract available.

Authors

John H. Duff, Frank J. Triska

Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 2000

Can contaminant transport models predict breakthrough? Can contaminant transport models predict breakthrough?

A solute breakthrough curve measured during a two-well tracer test was successfully predicted in 1986 using specialized contaminant transport models. Water was injected into a confined, unconsolidated sand aquifer and pumped out 125 feet (38.3 m) away at the same steady rate. The injected water was spiked with bromide for over three days; the outflow concentration was monitored for a...

Authors

Wei-Shyuan Peng, Duane R. Hampton, Leonard F. Konikow, Kiran Kambham, Jeffery J. Benegar

Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 2000

Advances in the hydrogeochemistry and microbiology of acid mine waters Advances in the hydrogeochemistry and microbiology of acid mine waters

The last decade has witnessed a plethora of research related to the hydrogeochemistry and microbiology of acid mine waters and associated tailings and waste-rock waters. Numerous books, reviews, technical papers, and proceedings have been published that examine the complex bio-geochemical process of sulfide mineral oxidation, develop and apply geochemical models to site characterization...

Authors

D. Kirk Nordstrom

Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 2000

Elements in cottonwood trees as an indicator of ground water contaminated by landfill leachate Elements in cottonwood trees as an indicator of ground water contaminated by landfill leachate

Ground water at the Norman Landfill Research Site is contaminated by a leachate plume emanating from a closed, unlined landfill formerly operated by the city of Norman, Oklahoma, Ground water contaminated by the leachate plume is known to be elevated in the concentration of many, organic and inorganic constituents. Specific conductance, alkalinity, chloride, dissolved organic carbon...

Authors

James A. Erdman, Scott Christenson

Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 2000

Dissimilatory reduction of selenate and arsenate in nature Dissimilatory reduction of selenate and arsenate in nature

This chapter discusses the biogeochemical reduction of selenate (Se(VI)) and arsenate (As(V)) when they enter anoxic environments and are used as electron acceptors for the oxidation of organic matter. These reductions are of a dissimilative nature and support the anaerobic growth of selected bacteria which conserve energy from this process. The chapter summarizes what is known about the...

Authors

Ron Oremland, J. Stolz

Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 2000

Distribution and origin of organic ligands in subsurface waters from sedimentary basins Distribution and origin of organic ligands in subsurface waters from sedimentary basins

No abstract available.

Authors

Yousif K. Kharaka, P.D. Lundegard, T.H. Giordano

Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 2000

Nanofiltration membranes used to remove selenium and other minor elements from wastewater Nanofiltration membranes used to remove selenium and other minor elements from wastewater

No abstract available.

Authors

Yousif K. Kharaka, James J. Thordsen, Roy A. Schroeder, J. G. Setmire

Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 2000

An overview of arsenic mass-poisoning in Bangladesh and West Bengal, India An overview of arsenic mass-poisoning in Bangladesh and West Bengal, India

The largest mass poisoning in the world, perhaps in history, is happening in West Bengal, India, and Bangladesh. Many thousands of people suffer from arsenic skin disorders and are dying from cancer. About 19 million are estimated to be at risk. The discovery of the arsenic poisoning from tubewell drinking water was made in 1983, but it took about 10 years to be formally recognized as a...

Authors

D. Kirk Nordstrom

Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 2000