摘要
以汕头经济特区的农业土壤和蔬菜为例,运用气相色谱-质谱方法对美国EPA优控多环芳烃(PAH)进行定性、定量测定,分析了其在中国亚热带地区农业土壤和植物中的分布特征,讨论了影响其分布的主要因素.结果表明:该区农业土壤中的PAH以3环和4环为主,单个PAH以萘、菲、荧蒽和苯并[b]萤蒽为主;而植物中的PAH以3环为主,单个PAH以萘、菲为主.PAH可在0～100 cm的土层范围内有效移动和传输,其中表层土壤的输入比率要高于移动和传输的比率.影响PAH在土壤和植物中分布的因素除PAH本身的理化性质外,土壤的理化性质、植物种类和环境条件同时起重要的作用.
Distribution of EPA Priority Polycyclic Aromatic Hydrocarbons （PAH） in Agricultural Soils and vegetation from subtropical zone of China was studied. Soil samples and vegetation samples from Shantou were collected during March and November 2002 and PAH were identified using gaschromatography linked to mass spectrometry （GC-MS）. PAH in soils was dominated by three-ring and four-ring PAH and the dominant individual PAH was naphthalene, phenanthrene, fluoranthene and beozo [b] fluornthene. However, PAH in vegetations dominated by three-ring PAH and the dominant individual PAH was naphthalene, phenanthrene. PAH would efficiently mobilization and transportation in the 0-100cm soil layer, thereinto the rate of input of PAH to the upper soils was higher than the rate of mobilization and transport. The factor influencing on PAH distribution in soils and vegetations were not only PAH own physical and chemic property but also physical and chemic character of soils, types of vegetations and environment conditions.
出处
《浙江大学学报（农业与生命科学版）》
CAS
CSCD
北大核心
2005年第4期374-380,共7页
Journal of Zhejiang University:Agriculture and Life Sciences
基金
国家自然科学基金资助项目(3017014730270282)
广东省团队基金资助项目(003031)
国家环保总局资助项目(2001-1-2)
广东省环保总局资助项目(2001-08).
关键词
分布
多环芳烃
农业系统
亚热带地区
distribution
polycyclic aromatic hydrocarbons （PAH）
agricultural system
subtropical zone
