Detecting estrogenic compounds in river water - ACS Publications

A practical example of exposure and uptake from a. shoe ... 1 51 nmol N 0 per cm3 aquifer day) were much lower ... er-based bootstrap estimations or m...
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Microbial effects on aquifer denitrification Relative rates of microbial metabolism and physical flow influence the transport of many contaminants in groundwater. R. L Smith and coworkers studied the impact of microbes on the rate of denitrification in a nitrate-contaminated aquifer in situ. Acetylene tracer added to the aquifer was transported with the natural groundwater flow to ensure minimal perturbation of the natural physical environmental conditions. Denitrifying activity produced nitrous oxide. Rates measured in situ (0.61 51 nmol N 0 per cm3 aquifer day) were much lower than those for laboratory-based methods The authors conclude that the laboratory method's tendenrv to overestimate the rafp