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Influence of Ethanol and Methyl Groups on the Degradation of Xylenes in Soil | Science Publications

机译:乙醇和甲基对土壤中二甲苯降解的影响科学出版物

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> >The main objective of the present study was to assess theinfluence of ethanol on the evaporation profile of xylenes (ortho + metaand para isomers) in active (withmicroorganisms) and inert (without microorganisms) soils. The vapors from foursealed flasks containing inert soil + neat xylenes, active soil + neat xylenes,inert soil + xylenes + ethanol and active soil + xylenes + ethanol weremonitored during 20 days by Gas Chromatography using a Flame IonizationDetector (GC/FID). No statistical differences were observed comparing theconcentrations of the meta and para isomers in all samples.The differences among the average concentrations of meta, paraand ortho isomers were relevant only in the active soil samples withoutethanol (95% confidence interval). Ethanol may enhance the ortho isomervolatilization and delay the degradations of meta and paraisomers.
机译: > >本研究的主要目的是评估乙醇对二甲苯( ortho + meta 异构体。使用火焰离子化检测器(GC / FID)在20天之内通过气相色谱法监测含有惰性土壤+纯二甲苯,活性土壤+纯二甲苯,惰性土壤+二甲苯+乙醇以及活性土壤+二甲苯+乙醇的四密封烧瓶中的蒸气。比较所有样品中的元和对位异构体的浓度没有统计学差异。元,的平均浓度之间存在差异对位异构体和邻位异构体仅在没有乙醇(95%置信区间)的活性土壤样品中具有相关性。乙醇可能会增强原位异构体的挥发,并延迟元和对位异构体的降解。

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