摘要
采用连续浸取法和火焰原子吸收分光光度法,研究了桂林市郊5个不同区域的菜地土壤、蔬菜铅污染,以及土壤铅的7种存在形态,讨论了各种形态铅对环境的影响.在铅形态的分布中以残渣态铅含量最高(20.986×10-6),占7种形态铅总量的44.36%,其次为无定形氧化铁结合态和晶形氧化铁结合态,分别占总铅量的17.07%、12.42%,而交换态、碳酸盐结合态、无定形氧化锰结合态和有机态铅的含量较低,各自占总铅量均小于10%.
Seven species of lead in soil samples, gathered from five areas at Guihn suburbs, are determined by the method of subsequent leaching - species analysis and flame atomic absorption spectrophotometry. Among the seven species Pb content （20. 986 × 10^-6） is found containing high Pb residue , which makes up 44. 36 % of the total lead of the 7 species. The second is the compound bounded with amorphous ferric oxide and crystalline ferric oxide, about 17.07% and 12. 42% of the total Pb . Each of the four species, or exchangeable, carbonate, manganic oxide and organic, is less than 10% of the total Pb.
出处
《桂林工学院学报》
CAS
北大核心
2006年第1期93-97,共5页
Journal of Guilin University of Technology
基金
广西教育厅科研项目(桂教科研[2003]22)
