The widespread usage of plastic film increased the content of phthalic acid esters (PAEs) in the environment, causing PAE residue in vegetables and subsequently increasing health risks to humans when consuming them. In this work, the presence, distribution and risk assessment of 15 PAEs in soils and peppers from suburban plastic film pepper-growing greenhouses were investigated. The total PAE contents in soil and pepper samples ranged from 320.1 to 971.2 μg/kg (586.3 μg/kg on average) and from 196.6 to 304.2 μg/kg (245.4 μg/kg on average), respectively. Di (2-ethyl)hexyl, dibutyl and diisobutyl phthalates (DEHP, DnBP and DiBP, respectively) were the most abundant in both soil and pepper samples. Specifically, DEHP showed the highest content in soils, while the DnBP content was the highest in peppers. The total PAE content in soils from pepper-greenhouses was much lower than in the agricultural soils mulched with plastic films, but significantly higher than in the agricultural soils from open uncovered fields. The total PAE content in peppers decreased as the service life of plastic film greenhouses increased. Correlation analysis suggested that the difference in distribution and accumulation behaviors of individual PAEs in greenhouse systems was correlated with their physicochemical properties. The non-cancer and carcinogenic risks of priority PAEs show low risks of PAEs detected in pepper and soil samples from the suburban plastic film greenhouses to human health.

塑料薄膜的广泛使用增加了环境中邻苯二甲酸酯（PAE）的含量，在蔬菜中引起PAE残留，并在食用时增加了对人类健康的危害。在这项工作中，调查了郊区塑料薄膜辣椒种植温室中土壤和辣椒中15种PAE的存在，分布和风险评估。土壤和辣椒样品中的PAE总量分别为320.1至971.2μg/ kg（平均586.3μg/ kg）和196.6至304.2μg/ kg（平均245.4μg/ kg）。土壤和胡椒样品中邻苯二甲酸二（2-乙基）己基，邻苯二甲酸二丁酯和邻苯二甲酸二异丁酯（分别为DEHP，DnBP和DiBP）最丰富。具体而言，DEHP在土壤中含量最高，而DnBP含量在辣椒中最高。胡椒温室土壤中的总PAE含量远低于覆盖有塑料薄膜的农业土壤，但显着高于裸露农田的农业土壤中的PAE含量。胡椒的总PAE含量随着塑料薄膜大棚使用寿命的延长而降低。相关分析表明，温室系统中单个PAE的分布和积累行为的差异与其理化特性有关。优先PAE的非致癌和致癌风险表明，从郊区塑料薄膜温室的胡椒和土壤样品中检出的PAE风险低，对人体健康无害。胡椒的总PAE含量随着塑料薄膜大棚使用寿命的延长而降低。相关分析表明，温室系统中单个PAE的分布和积累行为的差异与其理化特性有关。优先PAE的非致癌和致癌风险表明，从郊区塑料薄膜温室的胡椒和土壤样品中检出的PAE风险低，对人体健康无害。胡椒的总PAE含量随着塑料薄膜大棚使用寿命的延长而降低。相关分析表明，温室系统中单个PAE的分布和积累行为的差异与其理化特性有关。优先PAE的非致癌和致癌风险表明，从郊区塑料薄膜温室的胡椒和土壤样品中检出的PAE风险低，对人体健康无害。