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| 四种蔬菜对DBP和DEHP及其代谢物的吸收累积研究 |
| Absorption and Accumulation of Di-n-butyl phthalate(DBP) and Di(2-ethylhexyl) phthalate(DEHP) and Metabolites in Four Vegetables |
| 投稿时间：2017-08-08 修订日期：2017-10-23 |
| DOI：10.13254/j.jare.2017.0202 |
| 中文关键词: 邻苯二甲酸二丁酯，邻苯二甲酸二(2-乙基已基)酯，邻苯二甲酸单丁酯，邻苯二甲酸单(2-乙基已基)酯，蔬菜，吸收累积 |
| 英文关键词: di-n-butyl phthalate(DBP), di(2-ethylhexyl) phthalate(DEHP), mono-butyl phthalate(MBP), mono-2-ethylhexyl phthalate(MEHP), vegetables, accumulation |
| 基金项目:上海市科委扬帆计划项目（15YF1410500）；国家农产品质量安全风险评估重大专项（GJFP2017002） |
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| 中文摘要: |
| 以不同浓度DBP和DEHP处理的土壤对青菜、菠菜、莴苣和萝卜进行盆栽实验，采用加速溶剂萃取，QuEChERS方法和硅烷衍生化对土壤和蔬菜样品进行前处理，结合气相色谱-串联质谱（GC-MS/MS）检测技术，分析了4种蔬菜中DBP、DEHP及其单酯代谢物MBP、MEHP从土壤中吸收的残留量分布规律和富集系数。结果表明，生长在高、低两个不同浓度DBP和DEHP土壤中的4种蔬菜都有DBP、DEHP及其代谢物MBP和MEHP的检出。萝卜中DBP和DEHP残留总量（Σ2PAEs）及其代谢物残留总量均明显高于其他3种蔬菜。4种蔬菜对土壤中的DEHP的生物富集因子BCF值都大于1，有明显的富集效应；而对于土壤中DBP有富集效应的则只有萝卜，其他3种蔬菜对DBP的BCF值都远小于1。相关研究结果表明，土壤中的DBP、DEHP能被蔬菜产品吸收富集，并且在体内代谢出毒性比母体更高的单酯产物。 |
| 英文摘要: |
| The distribution and bioconcentration factor(BCF) of di-n-butyl phthalate(DBP), di(2-ethylhexyl) phthalate(DEHP) and their monoester metabolites mono-butyl phthalate(MBP), mono-2-ethylhexyl phthalate(MEHP) in four vegetables Brassica campestris L, Spinacia oleracea, Lactuca sativa and Raphanus sativus cultivated in treated soil were analyzed in this study. The samples were prepared with accelerated solvent extraction, QuEChERS and derivatization, and then measured using GC-MS/MS. DBP, DEHP and their metabolites MBP, MEHP were detected in four vegetables treated with high and low concentrations of DBP and DEHP. The total amount of DBP and DEHP residues(Σ2PAEs) and their total metabolites in R. sativus were significantly higher than those in other vegetables. The BCF values of DEHP from the four vegetables were greater than 1, indicating an obvious bio-accumulation effect. However, the BCF values of DBP were much less than 1 in three vegetables except R. sativus. DBP and DEHP in the soil were absorbed by these four vegetables. And the more toxic metabolite phthalate monoesters could be found in four vegetables. |
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