Bromate Ion Analysis By Ion Chromatography

Koudjonou, Boniface; Muller, Marcel; Costentin, E.; Racaud, Pascale; Jagt, Helga van der; Vilaro, J. S.; Hutchison, James E.

doi:10.1080/01919512.1995.10555767

Cited by 15 publications

(6 citation statements)

References 8 publications

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“…8 Both of these methods involve direct sample injection. The MDL can be lowered further through the use of preconcentration, 9 or by using sample pretreatment cartridges (onguard-Ag cartridge) for removing chloride ions. 10 Wagner et al 11 also reported an MDL of 0.12 mg L 21 when coupling EPA Method 300.1 to post-column derivatisation with o-dianisidine.…”

Section: Introductionmentioning

confidence: 99%

Ion chromatography in series with conductivity detection and inductively coupled plasma-mass spectrometry for the determination of nine halogen, metalloid and non-metal species in drinking water

Dudoit

Pergantis

2001

J. Anal. At. Spectrom.

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Ion chromatography (IC) with conductivity detection (ConD) was coupled on-line with inductively coupled plasma-mass spectrometry (ICP-MS) for the purpose of multielement speciation in drinking water. The system allows for the determination of two disinfection by-products (bromate and iodate), their precursors (bromide and iodide), two suspect carcinogenic substances that occur naturally in drinking water (arsenite and arsenate) and three common matrix anions (chloride, nitrate and sulfate). Detection limits, achieved via the direct injection of 100 mL samples, were adequate for the analysis of water intended for human consumption. ICP-MS signal stability and reduced spectroscopic interferences were observed with the use of a membrane suppressor. The IC-ConD-ICP-MS method was used for the analysis of a series of drinking water and spiked drinking water samples. In all samples analysed, bromate and arsenic levels were below the maximum levels set by the US Environmental Protection Agency and the European Commission. Average spike recoveries [¡RSD (%)] were 101¡1.5% for bromate, 96¡17% for bromide, 98¡2.8% for arsenic, 98¡1.9% for iodate, 91¡5% for iodide, 87¡5.5% for chloride, 96¡1.1% for nitrate and 95¡1.8% for sulfate. The method was also used to monitor bromate removal from drinking water following filtration through a domestic water purification unit.

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Section: Introductionmentioning

confidence: 99%

Ion chromatography in series with conductivity detection and inductively coupled plasma-mass spectrometry for the determination of nine halogen, metalloid and non-metal species in drinking water

Dudoit

Pergantis

2001

J. Anal. At. Spectrom.

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“…Recent advances in minimizing this interference have included a column switching system (10) and the use of a silver-containing cartridge as a pretreatment to remove the chloride (11,12). This approach has an MDL of 1 µg/L using a 5-mL sample volume and the possible disadvantage of analyte losses due to column capacities limitations (9,13). Gordon et al (14) used the oxidation of chlorpromazine by bromate as the basis for an ion chromatography detector (15), but this spectrophotometric technique still required chloride removal prior to analysis.…”

Section: Introductionmentioning

confidence: 99%

Determination of Bromate in the Presence of Brominated Haloacetic Acids by Ion Chromatography with Inductively Coupled Plasma Mass Spectrometric Detection

Creed

Magnuson

Brockhoff

1997

Environ. Sci. Technol.

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Bromate is a disinfection by product (DBP) in drinking water that is formed during the ozonation of a source water containing bromide. Brominated haloacetic acids are DBPs that are anions at near-neutral pHs. The anion character of bromoacetic acid (pK a = 2.7) is similar to bromate, which causes the two species to coelute when NaOH is used as an eluent. Four columns are evaluated as a means of removing the potential false positives generated by bromoacetic acid. The alkyl quaternary amine based PA-100 guard column separates bromate from bromoacetic acid using 100 mM NaOH, but the analysis time is greater than 12 min. The use of 5 mM HNO3 as an eluent (with the PA-100) provides adequate separation of bromate from bromoacetic acid with an analysis time of less than 8 min. The stability of bromate in 5 mM HNO3 was evaluated using a DDI matrix (pH adjusted to 5.5, fortified with bromide) and a drinking water matrix (pH 4−9). The bromate recoveries in these two matrices were 93−105% with less than 4% RSDs. Tribromoacetic acid produces a broad peak that envelops the retention window of bromate. The tribromoacetic acid was removed using a reverse-phase sample pretreatment cartridge. The overall analysis procedure was evaluated in a synthetic chloride, sulfate, and nitrate matrix. In addition, precision and recovery data were collected from five ozonated drinking waters. The percent recoveries in the ozonated waters ranged from 90 to 98% with RSDs of less than 6%. The method detection limit for bromate is 0.8 μg/L.

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“…The analytical methods used nowadays have detection limits ranging from 0.1 mg L 21 , e.g., for a ¯ow injection (FI) system with alumina microcolumns interfaced with inductively coupled plasma mass spectrometry (ICP-MS), 14 to v2 mg L 21 for more classical conductimetric detection with anion suppression ion chromatography. 9 Other techniques include an indirect FI spectrophotometric procedure using the oxidation of chlorpromazine by bromate (detection limit of 0.8 mg L 21 ) 13 , and ion chromatography interfaced with ICP-MS (detection limits in the range 0.1±0.5 mg L 21 ). 15±17 Finally, more complex techniques have also been developed, e.g., electrospray ion chromatography±tandem mass spectrometry, 18 electrospray ionisation±high-®eld asymmetric waveform ion mobility spectrometry±mass spectrometry, 19 or negative thermal ionisation±isotope dilution mass spectrometry, 20 of which the detection limits are in the range 0.03±0.1 mg L 21 .…”

Section: Introductionmentioning

confidence: 99%

Interlaboratory trial to determine the analytical state-of-the-art of bromate determination in drinking water

Thompson

Guinamant

Ingrand

et al. 2000

J. Environ. Monitor.

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The new European Directive for water intended for human consumption has established a regulatory level for bromate at 10 microg L(-1). This Maximum Admissible Concentration requires analytical methods with detection limits of a least 2.5 microg L(-1). A project funded by the Standards, Measurements and Testing Programme of the European Commission has enabled the improvement and/or development of methods for the determination of bromate at such concentration levels. This collaborative work was concluded by the organisation of an interlaboratory trial involving 26 European laboratories, which enabled the testing of both a draft ISO Standard method and alternative methods. This paper presents the results of this interlaboratory trial, along with results of a bromate stability study. The progress made with respect to the analytical state-of-the-art for bromate will greatly benefit the quality of measurements carried out in water quality monitoring.

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Bromate Ion Analysis By Ion Chromatography

Cited by 15 publications

References 8 publications

Ion chromatography in series with conductivity detection and inductively coupled plasma-mass spectrometry for the determination of nine halogen, metalloid and non-metal species in drinking water

Ion chromatography in series with conductivity detection and inductively coupled plasma-mass spectrometry for the determination of nine halogen, metalloid and non-metal species in drinking water

Determination of Bromate in the Presence of Brominated Haloacetic Acids by Ion Chromatography with Inductively Coupled Plasma Mass Spectrometric Detection

Interlaboratory trial to determine the analytical state-of-the-art of bromate determination in drinking water

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