Publications by authors named "Jerry Varns"
In response to growing interest in human exposure to perfluorinated compounds (PFCs), the state of Minnesota measured and reported PFC concentrations in fish collected from the Minneapolis-St. Paul area. To better determine the geographical distribution of PFC contamination throughout Minnesota, fish were collected from 59 lakes throughout the state and several areas along the Mississippi River.
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- A new method using solid phase extraction, liquid chromatography, and tandem mass spectrometry is developed to measure 10 perfluorinated compounds (PFCs) in fish fillets, specifically bluegill sunfish from Minnesota and North Carolina.
- * Four PFCs were commonly detected, with perfluorooctane sulfonate (PFOS) being the most prevalent, showing varying levels of contamination across different locations in Minnesota and North Carolina.
- * The study's findings indicate significant PFC contamination in fish from areas without known historical sources, highlighting a broader concern over PFCs in freshwater fish populations.
A method for the analysis of 10 perfluorinated compounds (PFCs) in whole fish homogenate is presented and applied to 60 fish samples collected from the Ohio, Missouri, and upper Mississippi Rivers in 2005. Method accuracy ranged between 86 and 125% with limits of quantitation between 0.2 and 10 ng/g wet weight.
View Article and Find Full Text PDFTen different perfluoroalkyl acids (PFAAs), including perfluooctane sulfonate (PFOS), were measured in 30 common carp (Cyprinus carpio) fillets collected from three sites on the Upper Mississippi River in Minnesota in an effort to evaluate the potential impact of PFAA emissions in this area. Samples upstream of the city of St. Cloud (reference site) had median PFOS concentrations of 8.
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