title: Comparison of ion chromatographic methods based on conductivity detection, post-column-reaction and on-line-coupling IC-ICP-MS for the determination of bromate.
abstract: An established method for the determination of the disinfection by-product bromate is ion chromatography (IC). This paper presents a comparison of three IC methods based on either conductivity detection (IC-CD), a post-column-reaction (IC-PCR-VIS) or the on-line-coupling with inductively coupled plasma mass spectrometry (IC-ICP-MS). Main characteristics of the methods such as method detection limits (MDL), time of analysis and sample pretreatment are compared and applicability for routine analysis is critically discussed. The most sensitive and rugged method is IC-ICP-MS, followed by IC-PCR-VIS. The photometric detection is subject to a minor interference in real world samples, presumably caused by carbonate. The lowest sensitivity is shown by the IC-CD method as slowest method compared, which, in addition, requires a sample pretreatment. The highest amount of information is delivered by IC-PCR-VIS, which allows the simultaneous determination of the seven standard anions and bromate.
authors.affiliation: University of Hannover, Institute of Inorganic Chemistry, Germany. schminke@mbox.acc.uni-hannover.de
authors.forename: G
authors.initials: G
authors.lastname: Schminke
authors.forename: A
authors.initials: A
authors.lastname: Seubert
mesh_terms: D000838:Anions / Q000032:analysis; D001959:Bromates / Q000032:analysis* / Q000378:metabolism / Q000633:toxicity; D001965:Bromides / Q000378:metabolism; D002273:Carcinogens / Q000032:analysis / Q000378:metabolism; D002746:Chlorpromazine / Q000378:metabolism; D002845:Chromatography / Q000295:instrumentation / Q000379:methods*; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004203:Disinfection; D004553:Electric Conductivity; D013058:Mass Spectrometry / Q000379:methods*; D008900:Mineral Waters / Q000592:standards; D010126:Ozone / Q000378:metabolism; D012680:Sensitivity and Specificity; D013053:Spectrophotometry; D013997:Time Factors; D018508:Water Purification
chemical_list: D000838:Anions; D001959:Bromates; D001965:Bromides; D002273:Carcinogens; D008900:Mineral Waters; D010126:Ozone; D002746:Chlorpromazine