Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
Environ Pollut. 2013 Sep;180:265-73. doi: 10.1016/j.envpol.2013.05.036. Epub 2013 Jun 19.
The concentrations of six priority phthalic acid esters (PAEs) in intensively managed suburban vegetable soils in Nanjing, east China, were analyzed using gas chromatography-mass spectrometry (GC-MS). The total PAE concentrations in the soils ranged widely from 0.15 to 9.68 mg kg(-1) with a median value of 1.70 mg kg(-1), and di-n-butyl phthalate (DnBP), bis-(2-ethylhexyl) phthalate (DEHP) and di-n-octyl phthalate (DnOP) were the most abundant phthalate esters. Soil PAE concentrations depended on the mode of use of plastic film in which PAEs were incorporated as plasticizing agents and both the plastic film and poultry manure appeared to be important sources of soil PAEs. Vegetables in rotation with flooded rice led to lower concentrations of PAEs in soil. The results indicate that agricultural plastic film can be an important source of soil PAE contamination and further research is required to fully elucidate the mechanisms of PAE contamination of intensive agricultural soils with different use modes of use of plastic film.
采用气相色谱-质谱联用技术（GC-MS）分析了中国东部南京市城郊集约化管理蔬菜地土壤中 6 种优先邻苯二甲酸酯（PAEs）的浓度。土壤中总 PAE 浓度范围很广，从 0.15 到 9.68mg/kg，中位数为 1.70mg/kg，其中邻苯二甲酸二丁酯（DnBP）、邻苯二甲酸二（2-乙基己基）酯（DEHP）和邻苯二甲酸二正辛酯（DnOP）是最丰富的邻苯二甲酸酯。土壤中 PAE 浓度取决于塑料薄膜的使用方式，其中 PAE 被用作增塑剂，塑料薄膜和家禽粪便似乎都是土壤中 PAE 的重要来源。与水培水稻轮作的蔬菜导致土壤中 PAE 浓度降低。结果表明，农用塑料薄膜可能是土壤中 PAE 污染的一个重要来源，需要进一步研究以充分阐明不同使用方式的农用塑料薄膜对集约化农业土壤中 PAE 污染的机制。
