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Newly published US EPA method 625.1 allows for solid phase extraction of semivolatile organic pollutants in industrial discharges

The original US EPA method 625 was published many years ago for the analysis of bases, neutrals and acids in municipal and industrial wastewater. The analysis uses liquid-liquid extraction (LLE) and GC/MS detection. This technique requires multiple extractions at 2 different sample pHs and consumes large amounts of organic solvents.