Evaluation of perfluoroalkyl substances in field-cultivated vegetables
Evaluation of perfluoroalkyl substances in field-cultivated vegetables
复制标题
DOI：
10.1016/j.chemosphere.2019.124750
复制
发表时间：
2020-01-01
期刊：
影响因子：
8.8
通讯作者：
Yamashita, Nobuyoshi
中科院分区：
文献类型：
--
作者：
Eun, Heesoo;Yamazaki, Eriko;Yamashita, Nobuyoshi
对2014-2017年间栽培和收获的三种蔬菜(水果、叶菜和根菜)中的全氟烷基物质(PFASs)进行了调查。耕地土壤主要受全氟烷基羧酸(PFCAs；91.8%)的影响，而不是全氟烷基磺酸(PFSAs；8.2%)。耕作土壤(即火山粘性土)具有较高的总有机碳(TOC=3.4%)，因此对长链PFASs有很强的吸附作用。短链全氟辛烷磺酸(即C9以下)主要在蔬菜中检出；具体而言，全氟辛烷磺酸在番茄地上部表现出较高的浓度。主成分分析(PCA)图清楚地表明，蔬菜中的PFASs与耕作土壤、空气和雨水中的PFASs不同。有趣的是，整个马铃薯(即包括果皮)与土壤属于同一类群，这表明整个马铃薯很容易受到耕作土壤的影响。能谱-扫描电子显微镜(EDS-SEM)结果表明，马铃薯表面存在不可去除的微米级耕作土壤颗粒。比较日本东部筑叶市和日本西部大阪市种植面积的区域差异，黄瓜的PFASs模式相似，青紫苏和马铃薯的PFASS模式不同。(C)2019爱思唯尔有限公司。保留所有权利。
Perfluoroalkyl substances (PFASs) were investigated in three types of vegetables (fruit, leafy, and root vegetables) that were cultivated and harvested from 2014 to 2017. The cultivated soil was mainly affected by perfluoroalkyl carboxylic acid (PFCAs; 91.8% detection rate) rather than perfluoroalkyl sulfonic acids (PFSAs; 8.2%). The cultivated soil (i.e., a volcanic cohesive soil) had a high total organic carbon (TOC = 3.4%) and therefore showed strong adsorption of long-chain PFASs. Short-chain PFCAs (i.e., under C9) were mainly detected in vegetables; specifically, PFBA showed high concentration in tomato shoots. Principal component analysis (PCA) plots clearly showed that PFASs in vegetables were different from those of cultivated soil, air, and rainwater. Interestingly, the whole potato (i.e., including peel) was in the same group as soil, indicating that the whole potato can easily be affected by the cultivated soil. Energy Dispersive X-ray Spectrometry-Scanning Electron Microscope (EDS-SEM) results showed that presence of unremovable micron-sized cultivated soil particles on the potato surface. Comparing the regional differences between the cultivated area of Tsukuba city (East Japan) and Osaka city (West Japan), PFASs patterns were similar in cucumber but differed in green perilla and potato. (C) 2019 Elsevier Ltd. All rights reserved.