title: Determination of iodoacetic acid using liquid chromatography/electrospray tandem mass spectrometry.
abstract: A rapid analytical method based on liquid chromatography/tandem mass spectrometry (LC/MS/MS) using electrospray ionization in negative ion detection mode was developed for the analysis of underivatized iodoacetic acid in water. The method was applied to model reaction mixtures in the study of the formation of iodoacetic acid after chlorinated tap water was boiled in the presence of potassium iodide or iodized table salt. Samples can be directly analyzed by the LC/MS/MS system without extraction or chemical derivatization. Limit of detection was determined to be 0.3 microg/L (or 0.3 ng/mL) and limit of quantitation was about 1 microg/L (1 ng/mL).
authors.affiliation: Health Products and Food Branch, Health Canada, Ottawa, Ontario, Canada, K1A 0K9. ben_lau@hc-sc.gc.ca
authors.forename: Benjamin P-Y
authors.initials: BP
authors.lastname: Lau
authors.forename: Adam
authors.initials: A
authors.lastname: Becalski
mesh_terms: D002138:Calibration; D002853:Chromatography, Liquid / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry; D019807:Iodoacetic Acid / Q000032:analysis* / Q000737:chemistry; D012680:Sensitivity and Specificity; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*; D053719:Tandem Mass Spectrometry / Q000379:methods*; D014867:Water / Q000737:chemistry
chemical_list: D014867:Water; D019807:Iodoacetic Acid