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Accumulation and transport patterns of six phthalic acid esters (PAEs) in two leafy vegetables under hydroponic conditions

文献类型： 外文期刊

作者： Li, Yong 1 ; Yan, Huangqian 1 ; Liu, Qiyue 1 ; Li, Xiaoqing 1 ; Ge, Jing 1 ; Yu, Xiangyang 1 ;

作者机构： 1.Minist Sci & Technol, State Key Lab Cultivat Base, Jiangsu Key Lab Food Qual & Safety, 50 Zhongling St, Nanjing 210014, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Food Safety & Nutr, 50 Zhongling St, Nanjing 210014, Peoples R China

关键词： Phthalic acid esters; Plant uptake; Accumulation and distribution; Leafy vegetable; Transport pattern

期刊名称：CHEMOSPHERE （ 影响因子：7.086； 五年影响因子：6.956 ）

ISSN： 0045-6535

年卷期： 2020 年 249 卷

页码：

收录情况： SCI

摘要： In this study, we investigated the accumulation and transport patterns of six phthalic acid esters (PAEs) in two leafy vegetables under hydroponic conditions. The tested PAEs included dibutyl phthalate (DBP), diethyl phthalate (DEP), diallyl phthalate (DAP), diisobutyl phthalate (DIBP), dimethyl phthalate (DMP) and benzyl butyl phthalate (BBP), and the tested vegetables included Gaogengbai and Ziyoucai. The results revealed that the six PAEs were taken up by vegetables from the solution, although their accumulation and distribution varied among PAEs. The ability of concentrating PAEs into the roots followed the order of BBP > DBP > DIBP > DAP > DEP > DMP, whereas the ability of concentrating PAEs in plant shoots had the opposite order. By analysing the fractionation of the six PAEs in vegetable roots, DMP had the largest proportion in terms of apoplastic movement, while BBP had the largest proportion in terms of symplastic movement. Correlation analyses revealed that the differences among the accumulation and distribution behaviours of the six PAEs in plant tissues were not only related to their physicochemical parameters, such as alkyl chain length and the octanol/water partition coefficient (logK(OW)),but also related to the proportion of apoplastic and symplastic movement in the plant roots. In addition, PAEs were more readily accumulated in the Gaogengbai roots than in the Ziyoucai roots; however, the opposite trend was observed for the shoots. (C) 2020 Elsevier Ltd. All rights reserved.

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