甲基叔丁基醚在地下水系统中的自然衰减

Natural attenuation of methyl tert-butyl ether in groundwater system

地下水中的甲基叔丁基醚(MTBE)自然衰减是生物与非生物过程综合作用的结果。在厌氧条件下,MTBE的同位素方面的证据表明:挥发、吸附和稀释等非生物过程中MTBE自然衰减的主要作用。在实际工作中,应结合当地水文地质条件,从主要环境因子来分析MTBE的自然衰减,从而判定MTBE自然衰减的速率和程度。在进行地下水中MTBE自然衰减研究时,应加强对于能反映MTBE自然衰减的"印迹"的研究。对这些"印迹"的确定将为野外监测MTBE的自然衰减提供理论上的依据。

The attenuantion of methyl tert-butyl ether （MTBE） in groundwater system results from biotic and abiotic processes. Under anaerobic condition, the results of stable isotope fractionation indiacte that the abiotic processes arc the the main reasons for MTBE natural attenuation. In the field, the rate and intensity of MTBE natural attenuation should be evauated based on the predominant environmental facotrs and actual hydrogeological conditions. In the study of MTBE natural attenuation, more attention should be paid on the fingerprinting techniques indicating MTBE natural attenuation. The determination of fingerprintings can give evidence for monitoring of MTBE natural attenuation in the field.