太湖流域蔬菜复合污染及生物富集特征研究

在太湖流域（苏南地区）无锡、常州、镇江3市农业活动区蔬菜及其对应土壤中PAEs化合物和Cd、Zn、Cu、Ni 4种重金属进行检测分析基础上,探讨了蔬菜复合污染分布及污染物的生物富集特征。结果表明,流域蔬菜中PAEs以DMP、DEEP、DNP含量较高,分别为：0.01～10.10mg/kg,ND-8.28mg/kg,ND-2.85mg/kg,重金属以Zn含量最高,为1.86～14.24mg/kg;蔬菜对应土壤中PAEs以DNOP、DMEP、DNP、DMP含量较高,分别为：0.13～44.7mg/kg,0.47～50.42mg/kg,0.48～64.7mg/kg,19.46～533.6mg/kg,重金属也以Zn含量最高,为31.02～43.73mg/kg;蔬菜富集规律分析发现,BMPP、DNHP、DNOP及重金属Cd在蔬菜中的富集系数较大。

Study on Bioaccumulation Characteristic and Combined Pollution of Vegetables in Taihu Lake Basin

The enrichment characteristics of pollutants in vegetables and their combined pollution distribu- tion are discussed based on the laboratory analyzing of phthalic acid esters （PAEs） and four kinds of heavy metals （Cd, Zn, Cu and Ni） in vegetables and their corresponding soils of agricultural activity areas in Taihu Lake Basin （Southern Jiangsu） including Wuxi, Changzhou, and Zhenjiang. The results show that the contents of DMP, DEEP and DNP are relatively high in PAEs of vegetables in this area, ranging from 0.01 to 10. 10mg/kg, ND to 8.28mg/kg, ND to 2.85mg/kg, respectively. And the content of Zn is the highest in heavy metals, ranging from 1.86 to 14. 24mg/kg. In their corresponding soils, DNOP, DMEP, DNP and DMP are higher in PAEs, ranging from 0. 13 to 44. 7mg/kg, 0.47 to 50.42mg/kg, 0.48 to 64. 7 mg/kg, and 19.46 to 533.6mg/kg, respectively. And the content of Zn is still the highest one in heavy metals, ranging from 31.02 to 43.73mg/kg. The analysis of enrichment regulation in vegetables shows that the enrichment factors of BMPP, DNHP, DNINP and Cd are relatively high.