Screening method for the gas chromatographic/mass spectrometric determination of microgram/litre levels of bromate in bottled water
1996
Bromate can be formed as a by‐product of ozone treatment that is sometimes used for the disinfection of municipal water supplies and bottled waters. The US Environmental Protection Agency has proposed a maximum contaminant level (MCL) of 10 μg/l for bromate in public drinking water. Should the proposed MCL for bromate become final, it may then be considered for adoption as a bottled water quality standard by the US Food and Drug Administration. This paper reports the development of a gas chromatographic/ mass spectrometric (GC/MS) method for the determination of parts‐per‐billion (μg/l) levels of bromate (BrO− 3 in bottled water. The GC/MS method was validated by using distilled and deionized Milli‐Q® water; detection limits, quantitation limits, and recoveries were determined and identities were confirmed by MS on the basis of analyses of test portions fortified with BrO− 3 at 0.8, 3.8, 7.7, 15, and 46 μg/l. The method also was evaluated on the basis of recoveries determined for two commercial brands of ...
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