Li Bin, Wu Shan, Liang Jin-ming, Deng Jie-fan, Wang Ke, Liang Wen-li, Zeng Cai-ming, Peng Si-qing, Zhang Tian-bin, Yang Guo-yi
Huan Jing Ke Xue. 2016 Jan 15;37(1):317-24.
In order to investigate and assess the distribution of pathalic acid easters (PAEs) in agricultural products from typical areas of the Pearl River Delta, South China, 131 agricultural products were sampled for determination of 6 PAEs priority pollutants classified by the U. S. EPA by GC-FID. The results showed that the total contents of the PAEs (sigma PAEs) in agricultural products samples ranged from nd to 79.86 mg x kg(-1) and the mean value was 2.84 mg x kg(-1), with the detected ratio of 98.5%. The average concentrations of sigma PAEs in different types of agricultural products were ordered by vegetables (3.03 mg x kg(-1)) > rice (2.52 mg x kg(-1)) > fruits (1.26 mg x kg(-1)). The mean concentration of PAEs distributed in the four typical cities of the Pearl River Delta, and decreased in the sequence of Zhuhai (6.53 mg x kg(-1)) > Dongguan (2.59 mg x kg(-1)) > Huizhou (1.53 mg x kg(-1)) > Zhongshan (1.12 mg x kg(-1)). Di-n-butyl phthalate (DBP), di-(2-ethylhexyl) phthalate (DEHP) and di-n-octyl phthalate (DnOP) contributed more than 90. 8% of the total PAEs in samples, and were the main components of PAEs in agricultural products from the Pearl River Delta, with higher percentage contents and detected ratio. Meanwhile, the average concentrations of sigma PAEs in cabbage mustard, lettuce occurred in Zhuhai and Dongguan cities, followed by lettuce and leaf lettuce in the corresponding DEHP from Zhuhai city, both exceeded the suggested standards in U.S.A. and Europe and were of high health risk. There were significant differences among 14 various vegetables in the contents of the 6 PAEs compounds, and the sigma PAEs contents in cabbage mustard and lettuce as part of leafy vegetables were higher than those in other vegetables, while the lowest were detected in flowering cabbage and edible amaranth. Therefore, the type of vegetables and its growing environment exposed to the atmosphere and soil were the main factors that significantly affected their accumulation of PAEs concentrations.
为调查和评估华南珠江三角洲典型地区农产品中邻苯二甲酸酯（PAEs）的分布情况，采集了131份农产品样本，采用气相色谱 - 火焰离子化检测器（GC - FID）测定美国环保署（U.S. EPA）划定的6种PAEs优先污染物。结果表明，农产品样本中PAEs的总含量（∑PAEs）范围为未检出（nd）至79.86 mg·kg⁻¹，平均值为2.84 mg·kg⁻¹，检出率为98.5%。不同类型农产品中∑PAEs的平均浓度排序为：蔬菜（3.03 mg·kg⁻¹）＞水稻（2.52 mg·kg⁻¹）＞水果（1.26 mg·kg⁻¹）。珠江三角洲四个典型城市中PAEs的平均浓度，按以下顺序递减：珠海（6.53 mg·kg⁻¹）＞东莞（2.59 mg·kg⁻¹）＞惠州（1.53 mg·kg⁻¹）＞中山（1.12 mg·kg⁻¹）。邻苯二甲酸二丁酯（DBP）、邻苯二甲酸二（2 - 乙基己基）酯（DEHP）和邻苯二甲酸二正辛酯（DnOP）在样本中PAEs总量中所占比例超过90.8%，是珠江三角洲农产品中PAEs的主要成分，含量百分比和检出率较高。同时，珠海和东莞两市的芥蓝、生菜中∑PAEs的平均浓度，以及珠海相应的生菜和叶用莴苣中DEHP的含量，均超过了美国和欧洲的建议标准，具有较高的健康风险。14种不同蔬菜中6种PAEs化合物的含量存在显著差异，作为叶菜类蔬菜的芥蓝和生菜中∑PAEs含量高于其他蔬菜，而菜心和苋菜中的含量最低。因此，蔬菜类型及其暴露于大气和土壤的生长环境是显著影响其PAEs浓度积累的主要因素。
