The Relationship between MX [3-Chloro-4-(dichloromethyl)-5-hydroxy-2(5H)-furanone], Routinely Monitored Trihalomethanes, and Other Characteristics in Drinking Water in a Long-Term Survey.

The Relationship between MX [3-Chloro-4-(dichloromethyl)-5-hydroxy-2(5H)-furanone], Routinely Monitored Trihalomethanes, and Other Characteristics in Drinking Water in a Long-Term Survey.
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长期调查中 MX [3-氯-4-(二氯甲基)-5-羟基-2(5H)-呋喃酮]、常规监测的三卤甲烷以及饮用水中其他特征之间的关系。

DOI:
10.1021/es5062006
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发表时间:
2015
影响因子:
11.4
通讯作者:
Smith RB
Smith RB
中科院分区:
环境科学与生态学1区
文献类型:
--
作者:
Smith RB

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MX(3-Chloro-4-(dichloromethyl)-5-hydroxy-2(5H)-furanone)是一种饮用水消毒副产物。它是一种强有力的诱变剂,关系到公众健康。关于饮用水中MX水平的数据,特别是在英国,是有限的。我们的目的是调查与水龙头MX浓度变异性相关的因素,并评估常规测量的三卤代甲烷(THM)是否是MX的合适替代指标。2007至2010年间,我们在英国布拉德福德及其周边的八个供水区的消费者水龙头进行了季度水样采样。我们收集了79份样品,用GC-HRMS对MX进行了分析。同时测量了pH值、温度、紫外线吸光度和游离氯等其他参数,并根据监管监测数据对总THMs进行了建模。据我们所知,这是迄今为止进行的最长的MX测量调查。MX浓度变化范围为8.9~45.5 ng/L,中位数为21.3 ng/L,具有明显的季节性,浓度高峰出现在夏末秋初。多元回归分析显示,MX水平与三卤代甲烷总量、紫外线吸光度和pH值有关。然而,TTHM和MX之间的关系在时间和地点上可能不够一致,因此TTHM在暴露评估中用作MX的替代指标。
MX (3-Chloro-4-(dichloromethyl)-5-hydroxy-2(5H)-furanone) is a drinking water disinfection byproduct (DBP). It is a potent mutagen and is of concern to public health. Data on MX levels in drinking water, especially in the UK, are limited. Our aim was to investigate factors associated with variability of MX concentrations at the tap, and to evaluate if routinely measured trihalomethanes (THMs) are an appropriate proxy measure for MX. We conducted quarterly water sampling at consumers’ taps in eight water supply zones in and around Bradford, UK, between 2007 and 2010. We collected 79 samples which were analyzed for MX using GC-HRMS. Other parameters such as pH, temperature, UV-absorbance and free chlorine were measured concurrently, and total THMs were modeled from regulatory monitoring data. To our knowledge this is the longest MX measurement survey undertaken to date. Concentrations of MX varied between 8.9 and 45.5 ng/L with a median of 21.3 ng/L. MX demonstrated clear seasonality with concentrations peaking in late summer/early fall. Multivariate regression showed that MX levels were associated with total trihalomethanes, UV-absorbance and pH. However, the relationship between TTHM and MX may not be sufficiently consistent across time and location for TTHM to be used as a proxy measure for MX in exposure assessment.
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发表时间: 2009
影响因子: 6.2
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发表时间: 1991
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DOI: 10.1016/0165-1218(87)90044-9
发表时间: 1987
期刊: Mutation research
影响因子: --
作者:
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影响因子: 8.8
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