土壤残油释放过程中组分变化研究

将紫外分光光度法与色质联机分析结合起来，分析了在土壤中残留数十年的油类在静态重复淋洗、动态连续淋滤及间歇淋滤过程中释放出油类组分的变化。结果表明:静态重复淋洗过程中，淋洗液苯系物组成变化不大，而烯烃类物组成变化较大，但两者的相对含量基本不变；动态淋滤过程中，二烯烃类比例逐渐减小而苯系物的比例逐渐增大，淋洗时间越长，释放物危害越大；间歇使二烯烃类中戊二烯、环己二烯等含量高的组分的比例增大，但对苯系物的组成影响不大，间歇时间越长，淋滤液中二烯烃类比例越高，释放物对地下水的危害越小；上游水库间歇非连续放水时，残油释放物危害小。 

Research on Variation of Composition Released from Residual Oil in Soil

Combined gas chromatography mass spectrometer with ultraviolet spectrometry,the variations of composition released from residual oil during static washing,continuous dynamic flushing and sequencing dynamic flushing process were discussed.In static repetitional washing process,the composition of the dieneoid varied greatly while that of the benzenoid almost remained the same.But the relative proportion between the two kinds changed little.In dynamic flushing process,the proportion of the dieneoid decreased while that of the benzenoid increased.The longer the release time,the more danger of the release liquid.Sequence inflowing increased the proportion of main composition of the diene,but made little effect on the benzenoid.The longer the sequencing time,the bigger proportion of the dieneoid in release liquid,the less danger of the release.When the upstream reservoir discharged the water discontinuously,the danger of release liquid would be lowered.