USGS - science for a changing world

Environmental Health - Toxic Substances

Research Projects

Other Fundamental Research and Methods Development

Placing the diffusion samplers in a lake
Scuba divers getting ready to place diffusion samplers into bottom sediments of Johns Pond, Cape Cod, Massachusetts -- from the Passive-Vapor-Diffusion Sampler Photo Gallery


The Toxics Program supports the development of knowledge and methods for the collection, analysis, and interpretation of data related to fundamental questions about contamination in the hydrologic cycle. What is the significance of these activities in relation to the field investigations?

Microbial Geochemistry



Contaminant Geophysics


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Page Last Modified: Tuesday, 06-May-2014 14:36:53 EDT