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首页> 外文期刊>Chemosphere >LC-ESI-MS/MS determination of oxyhalides (chlorate, perchlorate and bromate) in food and water samples, and chlorate on household water treatment devices along with perchlorate in plants
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LC-ESI-MS/MS determination of oxyhalides (chlorate, perchlorate and bromate) in food and water samples, and chlorate on household water treatment devices along with perchlorate in plants

机译：LC-ESI-MS / MS测定食品和水样中的卤氧化物（氯酸盐，高氯酸盐和溴酸盐）以及家用水处理设备中的氯酸盐以及植物中的高氯酸盐

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The results of the validation study of the LC-ESI-MS/MS method for the determination of chlorate (ClO3-), perchlorate (ClO4-) and bromate (BrO3-) in water and food samples are summarized. Towards this, 284 samples of drinking water were analysed, out of which the 69% contained chlorate above the limit of quantitation (LOQ) of 0.01 mg/L, with maximum amount of 1.1 mg/L. Only 6 samples were found to be positive with perchlorate at levels <0.01 mg/L. Bromate was detected in 5 drinking water samples at levels above the LOQ at concentrations up to 0.026 mg/L. For the validation of the method in food, 108 blank samples were spiked with chlorate and perchlorate for the LC-MS/MS analysis at two levels. In total 247 food samples from the market of 19 different commodities including fruits, vegetables, cereals and wine, were analysed. The maximum concentration of chlorate was found at 0.83 mg/kg in a sample of cultivated mushrooms. The number of samples contaminated with perchlorate was also small, with all the determined concentrations below the LOQ of 0.05 mg/kg. Experiments for the chlorate reduction in drinking water, showed that reverse osmosis treatment is effective in particular with newly installed cartridges. Finally, according to the results of the pilot study when chlorinated water is used for the plant irrigation, accumulation of chlorate is observed, especially in the green parts of the plant. Perchlorate was also detected in leafy samples, although it was not present in the irrigation water. (C) 2019 Elsevier Ltd. All rights reserved.
机译：总结了LC-ESI-MS / MS方法用于测定水和食品样品中氯酸根（ClO3-），高氯酸根（ClO4-）和溴酸根（BrO3-）的验证研究结果。为此，分析了284个饮用水样品，其中69％的氯酸盐含量超出定量限（LOQ）0.01 mg / L，最大含量为1.1 mg / L。发现只有6个样品的高氯酸盐含量<0.01 mg / L呈阳性。在高于最低定量限的浓度下，在5个饮用水样品中检出的溴酸盐浓度高达0.026 mg / L。为了在食品中验证该方法，在108个空白样品中加了氯酸盐和高氯酸盐，用于两个级别的LC-MS / MS分析。在总共247种食品样本中，对19种不同商品的市场进行了分析，包括水果，蔬菜，谷物和葡萄酒。栽培蘑菇样品中的氯酸盐最大浓度为0.83 mg / kg。高氯酸盐污染的样品数量也很少，所有确定的浓度均低于0.05 mg / kg的最低定量限。减少饮用水中氯酸盐含量的实验表明，反渗透处理尤其适用于新安装的滤筒。最后，根据中试研究的结果，当使用氯化水进行植物灌溉时，观察到了氯酸盐的积累，特别是在植物的绿色部分。尽管灌溉水中不存在高氯酸盐，但在多叶样品中也检测到了高氯酸盐。 （C）2019 Elsevier Ltd.保留所有权利。

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