| 徐雪,王利军,卢新卫.咸阳市郊菜地土壤中邻苯二甲酸酯（PAEs）污染研究[J].农业环境科学学报,2014,33(10):1912-1919. |
| 咸阳市郊菜地土壤中邻苯二甲酸酯（PAEs）污染研究 |
| Pollution of Phthalic Acid Esters（PAEs） in Vegetable Soils in Xianyang Suburbs, Northwest China |
| 投稿时间：2014-04-07 |
| DOI：10.11654/jaes.2014.10.006 |
| 中文关键词: 邻苯二甲酸酯 污染 土壤 菜地 咸阳市郊 |
| 英文关键词: phthalic acid esters pollution vegetable soil Xianyang suburbs |
| 基金项目:国家自然科学基金项目（41271510）；陕西省自然科学基础研究计划项目（2014JM5208）；中央高校基本科研业务费专项资金项目（GK201302032） |
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| 中文摘要: |
| 选择咸阳市郊4块典型菜地，采集59个表层土壤样品，利用高效液相色谱（HPLC）分析了土壤中邻苯二甲酸二甲酯（DMP）、邻苯二甲酸二乙酯（DEP）、邻苯二甲酸正二丁酯（DnBP）、邻苯二甲酸苄基丁基酯（BBP）、邻苯二甲酸二（2-乙基己基）酯（DEHP）和邻苯二甲酸正二辛酯（DnOP）6种美国环境保护部（US EPA）优控的PAEs含量，研究了土壤中PAEs的分布特征、构成特征、环境来源及污染水平。结果表明，咸阳市郊菜地土壤中这6种PAEs均有不同程度的检出，检出率为DMP（100%）=DnBP（100%）>DEHP（98%）>BBP（80%）>DnOP（66%）>DEP（52%）；单个PAEs化合物含量从未检出到6 313.36 μg·kg-1，含量顺序为DnBP>DEHP>DMP>DnOP>BBP>DEP；6种PAEs总量（∑6PAEs）在128.60~10 288.42 μg·kg-1之间，平均含量为632.10 μg·kg-1；不同菜地土壤中∑6PAEs含量顺序为曹家寨>郭村>八兴滩>东张村。与国内外已有研究结果比较发现，咸阳市郊菜地土壤中PAEs含量处于中等水平，土壤中PAEs主要以DnBP、DEHP和DMP为主。主成分分析和聚类分析表明，咸阳市郊菜地土壤中DEHP和DnBP主要来源于地膜的使用，DMP、DEP、BBP和DnOP与个人护肤品、化妆品及室内装修材料有关。根据美国纽约州土壤PAEs控制和治理标准，咸阳市郊菜地土壤中DMP和DnBP分别有100%和85%的样品超过该控制标准，是主要控制污染物，但均未超过该治理标准。 |
| 英文摘要: |
| Soil pollution by phthalic acid esters(PAEs) has become widespread. In the present study, a total of 59 topsoil samples were collected from four selected vegetable fields in Xianyang suburbs. High Performance Liquid Chromatography(HPLC) was used to analyze the concentrations of six PAEs, namely, di- methyl phthalate(DMP), di-ethyl phthalate(DEP), di-n-butyl phthalate(DnBP), benzyl butyl phthalate(BBP), di-(2-ethylehexyl) phthalate(DEHP) and di -n-octyl phthalate(DnOP), which have been listed as priority pollutants by United State Environmental Protection Agency(US EPA). Composition and distribution, environmental sources and pollution levels of PAEs in soils were also studied. All six PAEs were detected in vegetable soils. The detection frequency was in order of DMP(100%)=DnBP(100%)>DEHP(98%)>BBP(80%)>DnOP(66%)>DEP(52%). The concentrations of individual PAE compound varied from no detectable to 6 313.36 μg·kg-1 and their contents were DnBP>DEHP>DMP>DnOP>BBP>DEP. The total content of six PAEs(Σ6PAEs) ranged from 128.60 μg·kg-1 to 10 288.42 μg·kg-1, with an average of 632.10 μg·kg-1, and followed in order of Caojiazhai soils>Guocun soils>Baxingtan soils>Dongzhang soils. Compared to the results of other studies, the contents of PAEs in vegetable soils in Xianyang suburbs were in the middle level. Soil PAEs were dominated by DnBP, DEHP and DMP. Principal component analysis and cluster analysis indicated that DEHP and DnBP came mainly from the use of plastic film, and that DMP, DEP, DnOP and BBP were associated with cosmetics, personal care products and home decoration materials. Per the standard of control and cleanup of soil PAEs used in New York, US, the concentrations of DMP and DnBP in 100% and 85% soil samples exceeded the control standard values, but below the cleanup standard values. |
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