铁路岩石边坡土壤中重金属含量直接关系到铁路岩石边坡生态系统以及周边农田生态系统的环境安全.应用原子吸收光谱法检测了途经四川省紫色土丘陵区的成达铁路岩石边坡土壤与对照土壤中Pb,Cd,Zn,Cu,Mn等多种重金属元素的含量.结果表明:铁路岩石边坡土壤中重金属元素Pb和Mn的含量比对照土壤增加明显,增加幅度高达29.7％～35.4％；但重金属元素Cd,Zn,Cu在铁路岩石边坡土壤与对照土壤之间差别并不明显.%Heavy metal contents in railway rock-cut slope soil have directly influenced ecosystem on rock-cut slope and eco-envi-ronment safety of farmland nearby. In the study heavy metal Pb, Cd. Zn, Cu and Mn was determined by AAS in railway rock-cut slope and control soil samples on Cheng-Da Railway crossing purple soil in Sichuan province. The results showed that Pb and Mn were significantly higher in rock-cut soil than in control soil, that is 29. 7%~35. 4%, while Cd, Zn and Cu were similar in both soils.
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