期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

1991

A06

356-368

10.13331/j.cnki.jhau.1991.s1.022

本校为第一机构

湘潭市菜园土全部受到Cd的污染,蔬莲65％超过食品卫生标准,所有菜园土均有Pb污染,其中轻度污染4个区,中度污染2个区,以0.3ppm为标准,则蔬菜含Pb超标率达100％,如以0.6ppm为摄入限量浓度,蔬菜68％超限、Cu,Zn在土壤中均有积累,但末达到引起蔬菜污染的程度,土壤采用湘江流域背景值加2倍标准差作为污染起始值进行评终,3类菜园士对几种重金属元素的积累总趋势为:煤灰菜园土>红菜园土>潮菜园土,污染物质对土壤重金属积累的影响是:煤灰垃圾>污水灌溉>气污,但F的污染则与上相反、白菜和包菜对Cu,Zn,Cd,Pb的蓄积能力顺序相同,均为Cd>Zn>Cu>Pb,对每种元素而言则白菜的蓄积能力均大于包菜。

All the Soils studied was polluted by Cd and Pb.In all vegetable samples,Cd Content was above 0.3ppm but less than 1ppm—the limit concentration of vegetables.Among them,abont 65％exceeded the starldard of food sanitation in vcgetables(0.05ppm).Thcre were accumalations of both Cu and Zn in the Soils studied,but no vegetable samples exceeded the standards of food sanitation.The accumalation of Cr in the soils was not significant.In order of decreasing absorbalncy of vcgetables(concentration of vegetable/concentration in soil)to the heavy metals,...