title: Trace level haloacetic acids in drinking water by direct injection ion chromatography and single quadrupole mass spectrometry.
abstract: Chlorine has been widely used to kill disease-causing microbes in drinking water. During the disinfection process, organic and inorganic material in source waters can combine with chlorine and certain other chemical disinfectants to form disinfection by-products. The kind of disinfectant used can produce different types and levels of disinfectant byproducts in the drinking water, such as trihalomethanes and haloacetic acids (5HAAs). Currently, USEPA Method 552 utilizes a methyl tert-butyl ether extraction and diazomethane derivatization of HAAs and phenolic disinfectant by-products, and a gas chromatograph equipped with a capillary column to perform the separation of methyl-haloacetates and anisoles. To detect, gas chromatography and electron capture detector are used. This article demonstrates a simple method using direct injection ion chromatography hyphenated with mass spectrometry for the analysis of 5HAAs.
authors.affiliation: Houston Laboratory, Management Division, United States Environmental Protection Agency, 10625 Fallstone, Houston, TX 77099, USA.
authors.forename: Johnson
authors.initials: J
authors.lastname: Mathew
authors.forename: Rick
authors.initials: R
authors.lastname: McMillin
authors.forename: Jay
authors.initials: J
authors.lastname: Gandhi
authors.forename: Sheher
authors.initials: S
authors.lastname: Mohsin
authors.forename: Stefanie
authors.initials: S
authors.lastname: Czyborra
mesh_terms: D000085:Acetates / Q000032:analysis*; D013058:Mass Spectrometry / Q000379:methods; D010573:Pesticide Residues / Q000032:analysis; D035501:Uncertainty; D014881:Water Supply / Q000032:analysis*
chemical_list: D000085:Acetates; D010573:Pesticide Residues