Uptake of Di(2-ethylhexyl) Phthalate (DEHP) by the Plant Benincasa hispida and Its Use for Lowering DEHP Content of Intercropped Vegetables

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• 作者：Zunyi Wu ; Xiaolei Zhang ; Xiaolian Wu ; Guoming Shen ; Qizhen Du ; Cehui Mo
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2013
• 出版时间：June 5, 2013
• 年：2013
• 卷：61
• 期：22
• 页码：5220-5225
• 全文大小：358K
• 年卷期：v.61,no.22(June 5, 2013)
• ISSN：1520-5118

文摘

Uptake of di(2-ethylhexyl) phthalate (DEHP) by the plant Benincasa hispida and its use for topical phytoremediation were investigated by cultivation of plants in DEHP-contaminated environments. The results showed that major plant organs of B. hispida, including leaves, stems, and fruits, readily absorbed DEHP from the air. The amount of DEHP that accumulated in leaves, stems, and fruits was mainly dependent upon exposure time, and most DEHP accumulated in their inner tissues. A single plant of B. hispida with a gourd was able to absorb more than 700 mg of DEHP when it was exposed to DEHP-contaminated air for 6 week. B. hispida reduced air DEHP concentration by 65鈥?6% as the air DEHP concentration ranged from 2351 to 3955 渭g/m³ (high DEHP level) and 85鈥?2% as the air DEHP concentration ranged from 35.1 to 65.3 渭g/m³ (low DEHP level) in greenhouse experiments. When intercropping of B. hispida and Brassica chinensis or Brassica campestris, B. hispida reduced more than 87% of DEHP accumulation in the latter, which indicates that B. hispida has excellent use potential for lowering the DEHP content of intercropped vegetables.

Keywords:

Di(2-ethylhexyl) phthalate; Benincasa hispida; uptake; phytoremediation; vegetable