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Modeling volatilization of MTBE from standing surface waters

机译:模拟地表水中MTBE的挥发

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The discovery in California of methyl tertiary-butyl ether (MTBE) in surface waters used for recreational boating has raised concerns over the potential impact on drinking water quality. Concentrations of MTBE above the California secondary maximum contaminant level of 5 ppb have been reported. Here we present a model to predict the fate of MTBE in surface waters as a function of wind speed, water temperature, epilimnion depth, and lake surface area. The model was validated with MTBE concentration data from Lake Perris in southern California and Calero Reservoir in northern California. When applied to typical lake conditions in California [i.e., epilimnion depth in m (<35 ft) and water temperature >15 degreesC], the maximum half-life for MTBE is <40 days for quiescent conditions, and as low as 6 days if the average wind speed is >4.5 m/s (10 mi/h). The model can be used for management of recreational boating based on a target MTBE concentration in the reservoir. [References: 16]
机译:在加利福尼亚州发现的用于娱乐性划船的地表水中甲基叔丁基醚(MTBE)引起了人们对饮用水质量潜在影响的担忧。据报道,MTBE的浓度高于加利福尼亚二级最大污染物水平5 ppb。在这里,我们提出了一个模型来预测地表水中MTBE的命运与风速,水温、,水深度和湖泊表面积的关系。该模型已使用来自加利福尼亚州南部的佩里斯湖和加利福尼亚州北部的Calero水库的MTBE浓度数据进行了验证。当应用于加利福尼亚的典型湖泊条件时(即,epi生深度以米(<35英尺)和水温> 15摄氏度),在静止条件下,MTBE的最大半衰期为<40天,如果处于静止状态,则低至6天平均风速> 4.5 m / s(10 mi / h)。该模型可用于根据水库中的目标MTBE浓度管理休闲划船。 [参考:16]

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