杨凌区设施蔬菜基地土壤中邻苯二甲酸酯污染状况分析

Analysis of phthalate esters pollution in soils of facility vegetable bases of Yangling

为了评估杨凌区设施蔬菜基地土壤中邻苯二甲酸酯(PAEs)类化合物的污染状况,研究采用气相色谱-质谱联用法对土壤样品中15种PAEs化合物进行了检测分析。结果表明,在分析的土壤样品中检测出12种PAEs化合物,总含量在53.4~3524.1μg/kg,平均值为602.7μg/kg。其中DEHP、DBP、DIBP、DMEP、BBP、DNOP 6种单体是土壤中主要的PAEs污染物,检出率分别为100%、100%、100%、73.3%、63.3%、53.3%,平均含量分别为286.3、167.3、123.1、157.6、121.3、130.5μg/kg。与其他地区土壤相比,杨凌区蔬菜基地土壤中PAEs处在较低污染水平,但此类化合物在设施蔬菜基地普遍存在,其潜在环境风险值得引起关注。

In order to evaluate the pollution status of phthalate esters(PAEs)in soils of Yangling facility vegetable bases,15 PAEs were detected and analyzed in soil samples by gas chromatography-mass spectrometry.The results showed that 12 PAEs were detected in the analyzed soil samples,the total contents of which ranged from 53.4μg/kg to 3524.1μg/kg,with an average value of 602.7μg/kg.The detection rates of DEHP,DBP,DIBP,DMEP,BBP,DNOP were 100%,100%,100%,73.3%,63.3%,53.3%,respectively.And their average contents were 286.3,167.3,123.1,157.6,121.3,130.5μg/kg,respectively.Compared with soils in other regions,the pollution level of PAEs in vegetable base soils of Yangling is lower,but such compounds are ubiquitous in facility vegetable base soils,and the potential environmental risks should be paid attention to.