| 塑料工业区附近农田蔬菜DEHP的浓度水平及评价 |
| 摘要点击 3611 全文点击 1421 投稿时间：2009-12-24 修订日期：2010-03-09 |
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| 中文关键词 气相色谱/质谱联用仪 邻苯二甲酸二(2-乙基己基)酯 蔬菜 塑料工业区 植物累积 |
| 英文关键词 GC-MS di-(2-ethylhexyl) phthalate（DEHP） vegetable plastic industrial area plant accumulate |
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| 中文摘要 |
| 对塑料厂工业区附近农田蔬菜进行了采样调查，应用GC/MS联机检测技术初步研究了5种蔬菜内部组织及其生长环境（大气和土壤）中邻苯二甲酸二(2-乙基己基)酯(DEHP)的浓度水平.结果表明，蔬菜可食用部分DEHP浓度为0.23～9.11 mg/kg、 平均鲜重含量为3.82 mg/kg.蔬菜可食用部分中DEHP的鲜重含量为叶菜类＞果菜类＞根茎类.根据差异统计性分析可知生长环境和蔬菜品种影响DEHP在蔬菜组织和土壤中的浓度水平是显著的，大气沉降是蔬菜累积DEHP的最主要途径.植物累积DEHP的能力与其脂肪含量呈正相关，当脂肪含量相近时，表面粗糙或具有细密绒毛的叶片富集DEHP的能力较强.按照OEHHA建议人体每日允许摄入量0.05 mg/kg，则塑料工业区蔬菜DEHP含量已经超出安全标准. |
| 英文摘要 |
| Concentration of di-(2-ethylhexyl) phthalate（DEHP）in the inner tissue of various vegetable species and their growing environment (soil and atmosphere) around plastic industrial area were investigated and determined by gas chromatography-mass spectrum (GC/MS).The results showed that concentrations of DEHP in 5 kinds of vegetable were 0.23-9.11 mg/kg, 3.82 mg/kg in average (fresh weight). Of the various vegetable species determined,the highest burden was observed in the leafy vegetables, followed by melon and root vegetables. Statistical analysis of variance showed that environment and species are the factors that significantly affect DEHP concentrations in inner vegetable tissue and soil, respectively. Atmosphere deposition is the principal pathway for the accumulation of DEHP.The ability of the plant accumulating DEHP was mainly influenced by the lipid content of the plant. Leaf with pubescence or rough surface was found to have higher DEHP than the other, when the lipid contents were similar. Evaluation of the vegetable around plastic industrial area with the acceptable daily intake (ADI) by OEHHA, concentrations of DEHP has exceeded the safety standard. |
