A 2000 study done by the United States Geological Survey (USGS) analyzed 139 water samples from various streams across the United States.  95 different compounds, ranging from steroids to antibiotics, were found at part per billion (ppb) levels in the samples. In order to detect these compounds, it was first necessary to concentrate the analytes using solid phase extraction (SPE). While SPE is useful for concentrating these analytes, the process is tedious, time-consuming, and not reproducible. Solvent bar microextraction, first described in 2004, can be used as a rapid and reproducible alternative to SPE. We have successfully used solvent bar microextraction to concentrate acetaminophen from water as a model system for concentrating the antibiotic azithromycin. We will describe our results with acetaminophen as well as preliminary results concentrating azithromycin.

Novel solvent bar microextraction of acetaminophen and azithromycin from water

245th National Meeting (2013)

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