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首页> 外文期刊>Journal of Environmental Science and Health >Low-level bromate analysis in drinking water by ion chromatography with optimized suppressed conductivity cell current followed by a post-column reaction and UV/Vis detection
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Low-level bromate analysis in drinking water by ion chromatography with optimized suppressed conductivity cell current followed by a post-column reaction and UV/Vis detection

机译：通过离子色谱法对饮用水中的低含量溴酸盐进行分析，并优化了抑制电导率的池电流，然后进行了柱后反应和UV / Vis检测

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摘要

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%.
机译：在本工作中，使用高容量阴离子交换柱通过离子色谱系统有效地同时分离痕量的卤氧化物消毒副产物（DBP）阴离子和溴化物，然后进行柱后反应（PCR）。 PCR从过量的碘酸钾中生成原位氢碘酸（HI），碘酸与来自柱流出物的溴酸盐结合形成三碘化物阴离子，可通过352 nm的UV / Vis吸光度检测到。抑制电导率的电池电流在70 mA，1.0 mL / min的流速和9 mM碳酸盐洗脱液的条件下进行了优化。用痕量水平的臭氧处理市政和瓶装饮用水中的溴酸盐测定了其性能。基于臭氧化的市政饮用水基质，方法定量限（MQL）为0.89μgBrO_3 / L，评估了方法检测限为0.27μgBrO_3〜-/ L。但是，在超纯水中，MDL为0.015μgBrO_3〜-/ L，MRL为0.052μgBrO_3〜-/ L。加标市政样品的回收率在90％-115％的范围内。

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  • 来源
    《Journal of Environmental Science and Health》 |2011年第4期|p.420-425|共6页
  • 作者

    MARCELLIN FOTSING; BENOIT BARBEAU; MICHELE PREVOST;

  • 作者单位

    NSERC Industrial Chair on Drinking Water, Ecole Polytechnique de Montreal, Civil, Geological and Mining (CGM) Department, Montreal, Canada,Civil, Geological and Mining (CGM) Dept., Ecole Ploy technique de Montreal, CP 6079, Succ. centre-ville, Montreal (QC), H3C 3A7, Canada;

    NSERC Industrial Chair on Drinking Water, Ecole Polytechnique de Montreal, Civil, Geological and Mining (CGM) Department, Montreal, Canada;

    NSERC Industrial Chair on Drinking Water, Ecole Polytechnique de Montreal, Civil, Geological and Mining (CGM) Department, Montreal, Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    drinking water; bromate; suppressed conductivity; ozonation; ion chromatography;

    机译：饮用水;溴酸盐抑制电导率;臭氧化离子色谱;

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