GC/MS (Gas Chromatography-Mass Spectrometry) Analysis of Organics in Drinking Water Concentrates and Advanced Waste Treatment Concentrates. Volume 1. Analysis Results for 17 Drinking Water, 16 Advanced Waste Treatment and 3 Process Blank Concentrates

摘要

The goal of this research program was to provide a detailed chemical characterization of organic material concentrated from large volumes (1,500 liters to 15,000 liters) of finished drinking water (DW) and finished water from advanced waste treatment (AWT) plants. The approach used was organic compound identification based on glass capillary gas chromatography-mass spectrometry (GC-MS) analysis of the fractionated concentrate. The purpose of the research program was to enable EPA scientists to correlate the results of the detailed chemical characterization with those from other research programs testing the potential biological activity (i.e., mutagenicity) of the concentrates. Fifteen DW concentrates, sixteen AWT concentrates and five concentrate production method blanks were analyzed. The cities represented by the DW samplings were Cincinnati, Miami, New Orleans, Ottumwa (Iowa), Philadelphia and Seattle. Most of the unrecovered organic portion and the extracted material not amenable to GC-MS analysis appeared to be humic substances. In the 15 DW concentrates, 1091 organic compounds were identified in a total of 2383 detection instances. The AWT plans sampled were located at Escondido, Lake Tahoe, Orange County and Pomona (all in California), Dallas, and Washington, D.C. (Blue Plains site). In the 16 AWT concentrates, 991 organic compounds were identified in a total of 2097 detection instances.