Transcription of Method 625.1: Base/Neutrals and Acids by GC/MS (2016)
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Method 625.1: Base/Neutrals and Acids by GC/MS (2016)
Office of Water EPA 821-R-16-007. December 2016. Method : Base/Neutrals and Acids by GC/MS . This document contains the text of Method as published in 40 CFR part 136, Appendix A;. but formatted as a more user friendly stand-alone document. Please address questions or comments to: CWA Methods Team Engineering and Analytical Support Branch/EAD (4303T). Office of Science and Technology Environmental Protection Agency 1200 Pennsylvania Avenue, NW. Washington, DC 20460. Method Base/Neutrals and Acids by GC/MS . 1. Scope and Application This Method is for determination of semivolatile organic pollutants in industrial discharges and other environmental samples by gas chromatography combined with mass spectrometry ( GC/MS ), as provided under 40 CFR This revision is based on a previous protocol ( reference 1), on the basic revision promulgated
interferences (Reference 6). 3.4 In samples that contain an inordinate number of interferences, the use of chemical ionization (CI) or triple quadrupole (MRM) mass spectrometry may make identification easier. Tables 4 and 5 give characteristic CI and MRM m/z’s for many of the analytes covered by this method. The use
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