Geological and Mining (CGM) Department, NSERC Industrial Chair on Drinking Water, Ecole Polytechnique de Montreal,Civil, Montreal, Canada.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2011;46(4):420-5. doi: 10.1080/10934529.2011.542401.
In the present work, a high capacity anion exchange column was used to efficiently and simultaneously separate traces of oxyhalide disinfection byproducts (DBP) anions and bromide by an ion chromatography system followed by a post-column reaction (PCR). The PCR generates in situ hydroiodic (HI) acid from the excess of potassium iodate that combines with bromate from the column effluent to form the triiodide anion detectable by UV/Vis absorbance at 352 nm. The suppressed conductivity cell current was optimized at 70 mA, with a flow rate of 1.0 mL/min and a 9 mM carbonate eluent. Its performance was investigated on a trace-level determination of bromate in ozonated municipal and bottled drinking water. Based on ozonated municipal drinking water matrix, the method detection limit of 0.27 μg BrO(-)(3)/L was evaluated with the Method Quantification Limit (MQL) of 0.89 μg BrO(-)(3)/L. However, in ultrapure water, a MDL of 0.015 μg BrO(-)(3)/L and a MRL of 0.052 μg BrO(-)(3)/L were achieved. The recovery for spiked municipal samples was in the range of 90%-115%.
在本工作中，使用高容量阴离子交换柱，通过离子色谱系统和柱后反应（PCR），高效、同时分离痕量的卤氧化物消毒副产物（DBP）阴离子和溴化物。PCR 从过量的碘酸钾中就地生成氢碘酸（HI），与柱流出物中的溴酸盐结合形成三碘化物阴离子，可在 352nm 处通过紫外/可见吸光度检测到。抑制电导池电流在 70mA 时达到最佳状态，流速为 1.0mL/min，使用 9mM 碳酸盐洗脱液。在臭氧消毒的市政和瓶装饮用水中痕量溴酸盐的测定方面对其性能进行了研究。基于臭氧消毒的市政饮用水基质，以 0.89μg BrO(-)(3)/L 的方法定量限（MQL）评估方法检测限为 0.27μg BrO(-)(3)/L。然而，在超纯水中，检测限为 0.015μg BrO(-)(3)/L，定量限为 0.052μg BrO(-)(3)/L。市政加标样品的回收率在 90%-115%范围内。
