title: Trace level perchlorate analysis by ion chromatography-mass spectrometry.
abstract: Perchlorate is commonly used as an oxidant in solid fuel propellant for rockets and missiles. Recently perchlorate contamination was found in many aquifers associated with Colorado River and other sites. Perchlorate was also found at elevated level in crops that use contaminated water for irrigation. Ion chromatography with conductivity detection could be used to measure perchlorate levels in drinking and wastewaters as per United States Environmental Protection Agency method 314, but at lower levels and with complexity of the matrix there could be false positive and/or false negative. This study was done to demonstrate the detection of perchlorate with lower detection limit with high ionic matrix by ion chromatography-mass spectrometry.
authors.affiliation: Houston Laboratory, Management Division, Environmental Protection Agency, 10625 Fallstone, Houston, TX 77099, USA. mathew.johnson@epa.gov
authors.forename: Johnson
authors.initials: J
authors.lastname: Mathew
authors.forename: Jay
authors.initials: J
authors.lastname: Gandhi
authors.forename: Joe
authors.initials: J
authors.lastname: Hedrick
mesh_terms: D002852:Chromatography, Ion Exchange / Q000379:methods*; D010472:Perchlorates / Q000032:analysis*; D015203:Reproducibility of Results; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*
chemical_list: D010472:Perchlorates; C494474:perchlorate