Polycyclic Aromatic Hydrocarbons and Phthalic Acid Esters in Vegetables from Nine Farms of the Pearl River Delta, South China
Polycyclic Aromatic Hydrocarbons and Phthalic Acid Esters in Vegetables from Nine Farms of the Pearl River Delta, South China
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华南珠三角九个农场蔬菜中的多环芳烃和邻苯二甲酸酯
DOI：
10.1007/s00244-008-9177-7
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发表时间：
2009-02-01
影响因子：
4
通讯作者：
Wu, Qi-Tang
中科院分区：
文献类型：
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作者：
Mo, Ce-Hui;Cai, Quan-Ying;Wu, Qi-Tang
本研究调查了从华南珠江三角洲的 9 个农场采集的 11 种蔬菜中 16 种多环芳烃 (PAH) 和 6 种邻苯二甲酸酯 (PAE) 的存在情况。通过气相色谱-质谱联用 (GC-MS) 检测蔬菜中的 12 种 PAH 化合物和所有 PAE 化合物。 PAHs (ΣPAHs) 和 PAEs (ΣPAEs) 的总浓度范围为 7.0 至 5353 µg kg−1 干重 (d.w.)，平均值为 1173 µg kg−1d.w.；0.073 至 11.2 mg kg−1d.w.，平均值为 3.2 mg kg−1(d.w.)，分别。 ΣPAHs 和ΣPAE 含量最高的分别是芥菜和芥菜。对于同一蔬菜，PAHs的生物浓缩因子（BCF；植物组织中污染物浓度与土壤浓度的比值）（0.0037至5.5之间）通常高于PAEs（<0.0001至0.61）。还值得注意的是，有机污染物水平、BCF 和苯并[a]芘当量浓度存在很大差异，这取决于各种污染物、采样地点和蔬菜种类。本研究中 PAH 和 PAE 的出现情况与其他研究中的情况进行了比较，并讨论了其来源。
This study investigated the occurrence of 16 polycyclic aromatic hydrocarbons (PAHs) and 6 phthalic acid esters (PAEs) in 11 vegetable species collected from nine farms of the Pearl River Delta, South China. Twelve PAH compounds and all PAE compounds were detected by gas chromatography coupled with mass spectrometry (GC-MS) in vegetables. The total concentrations of PAHs (ΣPAHs) and PAEs (ΣPAEs) ranged from 7.0 to 5353 μg kg−1dry weight (d.w.), with a mean value of 1173 μg kg−1d.w., and from 0.073 to 11.2 mg kg−1d.w., with a mean value of 3.2 mg kg−1(d.w.), respectively. The highest levels of ΣPAHsand ΣPAEswere found inBrassica junceaandBrassica parachinensis, respectively. For the same vegetable, the bioconcentration factors (BCFs; the ratio of contaminant concentration in plant tissue to the soil concentration) of PAHs (between 0.0037 and 5.5) are generally higher than those of PAEs (between <0.0001 and 0.61). It was also noted that there were great variations of organic contaminant levels, BCFs, and benzo[a]pyrene equivalent concentrations, which depend on the various contaminants, sampling locations, and vegetable species. The occurrences of PAHs and PAEs in this study are compared with those in other studies and their sources are discussed.