Adopted and Proposed ASTM Methods for the Analysis of Perfluorinated Compounds (PFCs), Select Pesticides and a Biocide Using Quick Sample Extraction/Preparation Followed by UPLC/MS/MS Analysis
Oral Presentation
Prepared by L. Zintek, B. Shrestha, C. Bhardwaj, D. Wesolowski
US EPA, 536 South Clark Street, Chicago, IL, 60605, United States
Contact Information: zintek.lawrence@epa.gov; 312-886-2925
ABSTRACT
The US EPA Chicago Regional Laboratory (CRL) has developed methods for qualitative and quantitative determination of perfluorinated compounds at the low ppt concentration levels. A quick extraction and clean-up procedure using 5 mL water/effluent/sludge samples or a 2 gram soil/biosolid sample was developed and is being extensively utilized. CRL has also developed a method for the analysis of (Tri-n-butyl)-n-tetradecylphosphonium chloride (TTPC), a biocide, in water and soil which has been used to characterize a spill site. Another method development initiative is to develop a quick low level analysis of select pesticides of interest to the Midwest.
One issue with the analysis of common chemicals is minimization or elimination of extraction or preparation steps that may contaminate a sample. For instance, many laboratory products may contain target analytes of interest, like PFCs, that can contaminate your analytical sample. The incorporation of state-of-the-art sensitive mass spectrometers allows for the quantification of these analytes at the ppt level with less sample manipulation. Methods for water, sludge, biosolids and soil are tailored to determine these contaminants in these matrices. Data will be presented in various complex matrices. Many of the methods developed by CRL are incorporated into consensus standards such as the American Society for Testing and Materials (ASTM).
Oral Presentation
Prepared by L. Zintek, B. Shrestha, C. Bhardwaj, D. Wesolowski
US EPA, 536 South Clark Street, Chicago, IL, 60605, United States
Contact Information: zintek.lawrence@epa.gov; 312-886-2925
ABSTRACT
The US EPA Chicago Regional Laboratory (CRL) has developed methods for qualitative and quantitative determination of perfluorinated compounds at the low ppt concentration levels. A quick extraction and clean-up procedure using 5 mL water/effluent/sludge samples or a 2 gram soil/biosolid sample was developed and is being extensively utilized. CRL has also developed a method for the analysis of (Tri-n-butyl)-n-tetradecylphosphonium chloride (TTPC), a biocide, in water and soil which has been used to characterize a spill site. Another method development initiative is to develop a quick low level analysis of select pesticides of interest to the Midwest.
One issue with the analysis of common chemicals is minimization or elimination of extraction or preparation steps that may contaminate a sample. For instance, many laboratory products may contain target analytes of interest, like PFCs, that can contaminate your analytical sample. The incorporation of state-of-the-art sensitive mass spectrometers allows for the quantification of these analytes at the ppt level with less sample manipulation. Methods for water, sludge, biosolids and soil are tailored to determine these contaminants in these matrices. Data will be presented in various complex matrices. Many of the methods developed by CRL are incorporated into consensus standards such as the American Society for Testing and Materials (ASTM).
