Use of Pyrolysis Gas Chromatography-Mass Spectrometry to Study the Nature and Behavior of Natural Organic Matter in Water Treatment

Kimberly A Gray*, A. H. Simpson, K. S. McAuliffe

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Pyrolysis(PY)-GC-MS has been used to characterize the chemical nature of the organic matrix of three surface waters derived from diverse locations in North America. The chemical fingerprints of water samples treated by conventional and enhanced coagulation are presented and are statistically analyzed relative to their disinfectant byproduct (DBP) yield. This approach seeks to establish quantitative structure-function relationships between chemical components of the organic matrix and DBF formation potential, and illustrates a number of insightful trends among the pyrolysis fragments of these waters. The aromatic signature of these waters was poorly correlated to trihalomethane formation potential (THMFP). For a set of critical pyrolysis fragments identified for these samples, a general pattern was found for the precursor material of THMFP, whereas the chemical nature of precursors for haloacetic acid (HAA) appeared to be more source specific. Furthermore, the precursors to THM and HAA showed distinct chemical characteristics as revealed by PY-GC-MS.

Original languageEnglish (US)
Pages (from-to)159-181
Number of pages23
JournalACS Symposium Series
Volume649
StatePublished - Dec 1 1996

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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