石油烃降解物对Cd在土壤－植物系统中迁移转化影响的研究  

Effect of degraded products from mineral oil on translocation and transformation of Cd In soil-plant system

作　　者：熊先哲[1] 何勇田[1] 张学询[1] 宋胜焕 吴铁铮[1] 李滢[1] 

机构地区：[1]中国科学院沈阳应用生态研究所陆地生态系统痕量物质生态过程开放实验室

出　　处：《应用生态学报》1995年第4期428-432,共5页Chinese Journal of Applied Ecology

基　　金：中国科学院陆地生态系统痕量物质生态过程开放实验室基金

摘　　要：研究棕榈酸、儿茶酚和香草酸对土壤中Ｃｄ行为的影响表明，土壤中儿茶酚对水稻的毒害浓度为１００ｍｇ·ｋｇ－１，而香草酸则为５００ｍｇ·ｋｇ－１．当土壤中儿茶酚为５０００ｍｇ·ｋｇ－１时，水稻籽实中Ｃｄ浓度降到０．００８ｍｇ·ｋｇ－１，土壤淋溶液中Ｃｄ浓度降为０．００５ｍｇ·Ｌ－１，３种有机物均能增加土壤中有机结合态Ｃｄ的比例，５０００ｍｇ·ｋｇ－１的儿茶酚处理，土壤中有机质结合态Ｃｄ占总Ｃｄ的４８．７１％．Studies on the effect of palmitic acid, catechol and vanillic acid on behavior of Cd in soil show that the toxic concentration of catechol to rice plant is 100 mg·kg-1, and that of vanillic acid is 500 mg·kg-1. When the soil content of catechol is 5000 mg·kg-1, the concentration of Cd in rice grain is reduced to 0. 008 mg·kg-1,and that in leached solution from soil column is lowered to 0. 005 mg·L-1. All of these three organic compounds can increase the proportion of soil organic bound Cd,which occupies 48. 71% of total id when the soil is amended with 5000rug·kg-1 catechol.

关 键 词：土壤-植物系统 镉 石油烃 降解 转化 

分 类 号：S154.4[农业科学—土壤学]