title: Analytical method for perchlorate in water by liquid chromatography-mass spectrometry using an ion exchange column.
abstract: A practical analytical method was developed for the routine analysis of perchlorate in environmental and drinking-water samples by liquid chromatography-electrospray ionization mass spectrometry (LC/ESI-MS) using an anion exchange column. By using (18)O-enriched perchlorate as an internal standard, the limits of quantification of perchlorate determined by tenfold of the signal-to-noise ratio and tenfold of the standard deviation were 0.1 and 0.03 microg L(-1), respectively. The perchlorate concentrations in the raw and finished water samples from seven water purification plants were determined by LC/ESI-MS. Perchlorate was detected in 12 out of 13 samples, and the perchlorate concentrations in the samples were from 0.1 to 36.1 microg L(-1).
authors.affiliation: Department of Water Supply Engineering, National Institute of Public Health, Wako, Saitama 351-0197, Japan.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Kamoshita
authors.forename: Koji
authors.initials: K
authors.lastname: Kosaka
authors.forename: Mari
authors.initials: M
authors.lastname: Asami
authors.forename: Yukiko
authors.initials: Y
authors.lastname: Matsuoka
mesh_terms: D002853:Chromatography, Liquid / Q000295:instrumentation* / Q000379:methods; D007474:Ion Exchange; D010472:Perchlorates / Q000032:analysis*; D015203:Reproducibility of Results; D045483:Rivers / Q000737:chemistry*; D012680:Sensitivity and Specificity; D021241:Spectrometry, Mass, Electrospray Ionization / Q000295:instrumentation* / Q000379:methods; D013997:Time Factors; D014881:Water Supply
chemical_list: D010472:Perchlorates; C494474:perchlorate