Application Note: New Method US EPA 625 with Solid Phase Extraction for Challenging Wastewaters
27 January 2015

This paper compares SPE to the liquid-liquid extraction techniques used for US EPA 625. The study describes the analysis of a synthetic wastewater matrix and spike mixtures of undisclosed composition using Horizon Technology equipment. Results demonstrate that SPE recoveries were found to be well within the acceptance parameters of method 625.