Contaminants of Emerging Concern in the Environment
scientist prepares a sample to test the effect of antibiotics on subsurface denitrifying bacteria
within a glove box. A glove box allows scientists to work with samples in an anaerobic (no oxygen) atmosphere, the conditions under which denitrification occurs. Photo credit: Jennifer C. Underwood, USGS
Average concentrations of antidepressants in water, sediment, and fish neural tissue
from Boulder Creek just below the point where wastewater from a sewage treatment plant is discharged (USGS Site ID 400305105103901
). Since concentration units differed for each sample type, the concentrations were normalized to the highest single antidepressant concentration in each sample type (highest concentration was set to equal one). The graph shows that fish selectively absorb some antidepressants more than others.
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