Sorption of chlorophenols onto fruit cuticles and potato periderm  

作　　者：Yungui Li Yingqing Deng Baoliang Chen 

机构地区：[1]Department of Environmental Science,Zhejiang University,Hangzhou 310058,China [2]Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control,Hangzhou 310058,China [3]Department of Environmental Engineering,Southwest University of Science and Technology,Mianyang 621010,China

出　　处：《Journal of Environmental Sciences》2012年第4期675-681,共7页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No. 20977081);the Foundation forthe Author of National Excellent Doctoral Dissertation of China (No. 200765);the Zhejiang Provincial Natural Science Foundation of China (No. R5100105);the Doctoral Fund of Ministry of Education of China (No.J20091588)

摘　　要：To better understand the interaction mechanisms of plant surfaces with polar organic compounds, sorption of 4-chlorophenol, 2,4- dichlorophenol, and 2,4,6-trichlorophenol by fruit cuticles （i.e., tomato, apple, and pepper）, and potato tuber periderm were investigated. The roles of cuticular components （waxes, cutin, cutan and sugar） on sorption of chlorophenols are quantitatively compared. Cutin and waxes govern the sorption capacity of bulk apple cuticle by hydrophobic interactions. Potato periderm with highest sugar content exhibits the lowest sorption capability for the chlorophenols. With the increase of hydrophobicity （i.e., Kow ） of sorbate, the relative contribution of lipophilic components （wax, cutin and cutan） on total sorption increases, however, the ratios of Koc to Kow decreases due to increasing ionization degree of sorbates.To better understand the interaction mechanisms of plant surfaces with polar organic compounds, sorption of 4-chlorophenol, 2,4- dichlorophenol, and 2,4,6-trichlorophenol by fruit cuticles （i.e., tomato, apple, and pepper）, and potato tuber periderm were investigated. The roles of cuticular components （waxes, cutin, cutan and sugar） on sorption of chlorophenols are quantitatively compared. Cutin and waxes govern the sorption capacity of bulk apple cuticle by hydrophobic interactions. Potato periderm with highest sugar content exhibits the lowest sorption capability for the chlorophenols. With the increase of hydrophobicity （i.e., Kow ） of sorbate, the relative contribution of lipophilic components （wax, cutin and cutan） on total sorption increases, however, the ratios of Koc to Kow decreases due to increasing ionization degree of sorbates.

关 键 词：potato periderm fruit cuticle chlorophenol SORPTION waxes CUTIN 

分 类 号：X703[环境科学与工程—环境工程] S435.32[农业科学—农业昆虫与害虫防治]