Please wait a minute...
浙江大学学报（农业与生命科学版）
浙江大学学报(农业与生命科学版)  2011, Vol. 37 Issue (4): 465-472    DOI: 10.3785/j.issn.1008-9209.2011.04.017
资源与环境科学     
东南景天对镉-苯并[ a]芘复合污染土壤的修复效果
李廷强１ , 董增施２ , 姜宏１ , 李冰3 , 杨肖娥1
１ .浙江大学环境与资源学院教育部污染环境修复与生态健康重点实验室,浙江 杭州 ３１００５８ ; ２ .杭州万向职业技术学院, 浙江 杭州 ３１００２３ ;３ .四川农业大学资源与环境学院,四川 雅安 ６２５０１４)
Remediation efficiency of Cd-B[a]P combined polluted soil by Sedum alfredii
LI Ting-qiang１ , DONG Zeng-shi２ , JIANG Hong１ , LI Bing３ , YANG Xiao-e１
1 . Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health , College of Environmental and Resource Sciences , Zhejiang University , Hangzhou 310058 , China ; 2 . Hangz hou W anxiang polytechnic ,Hangzhou 310023 , China ;3 . College of Resource and Environmental Sciences , Sichuan Agricultural University , Y a′an , Sichuan 625014 , Chin
 全文: PDF(280 KB)   HTML ( ) 
摘要： 采用盆栽试验研究２ 种生态型东南景天对镉-苯并[a]芘(Cd-B[a]P)复合污染土壤的修复效果.结果表明:在Cd-B[a]P复合处理条件下,超积累生态型东南景天生长主要受高浓度B[a]P影响,而Cd 是抑制非积累生态型东南景天生长的主要因素,在低Cd 处理条件下,5mg/kg -1 B[a]P能促进2种生态型东南景天根系的生长;超积累生态型东南景天地上部镉含量远远大于非积累生态型,且不受B[a]P水平的影响;２ 种生态型东南景天各部位B[a]P含量主要受土壤B[a]P水平的影响;在Cd-B[a]P复合处理条件下,超积累生态型东南景天对镉的去除效果显著高于非积累生态型,但在高质量浓度B[a]P(25 mg/kg -１ )处理条件下,镉的去处效果明显降低;未种植物的土壤B[a]P平均去除率达到43.7%,而种植东南景天的土壤B[a]P平均去除率达到58.2%.本结果说明超积累生态型东南景天对中轻度Cd-B[a]P复合污染土壤具有较好的修复效果.
Abstract: Remediation efficiency of cadmium (Cd) and benzo [a] pyrene ( B[a]P) combined polluted soil by Sedum al f redii Hance was studied using pot experiment under controlled temperature and natural light during cultivation .The results showed that the growth of hyperaccumulating ecotype ( HE) of S .al f redii was inhibited under high B[a]P level (2 5mg/kg -1  ) , whereas the biomass of nonhyperaccumulating ecotype (NHE) decreased significantly due to Cd toxicity . When treated with low Cd (1 mg/kg -1  ) , the root biomass of both HE and NHE were increased by 5mg/kg -1  B[a]P . Cadmium concentration in the shoot of the HE was much greater than the NHE and was not influenced by B[a]P supply level . The B[a]P concentrations in both shoot and root of both ecotype of S . alfredii were controlled by B[a]P level in the soil instead of Cd . The removal efficiency of Cd from Cd‐B[a]P combined polluted soil by the HE was much greater than the NHE , however , significant decrease of Cd removal efficiency was observed with treatment of 25mg/kg -1B[a]P . The removal efficiency of B[a]P from unplanted soil was43.7%, whereas it was increased to 58.2% after planted with both ecotypes of S . alfredii .All the results above suggest that hyperaccumulating ecotype of S . al f redii has great potential for phytoremediation of Cd and B[a]P moderately contaminated soil .
出版日期: 2011-07-20
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　
李廷强
董增施
姜宏
李冰
杨肖娥

引用本文:

李廷强,董增施,姜宏,李冰, 杨肖娥. 东南景天对镉-苯并[ a]芘复合污染土壤的修复效果[J]. 浙江大学学报(农业与生命科学版), 2011, 37(4): 465-472.

LI Ting-qiang,DONG Zeng-shi,JIANG Hong,LI Bing,YANG Xiao-e. Remediation efficiency of Cd-B[a]P combined polluted soil by Sedum alfredii. Journal of Zhejiang University: Agric. & Life Sci., 2011, 37(4): 465-472.

链接本文:

http://www.zjujournals.com/agr/CN/10.3785/j.issn.1008-9209.2011.04.017    或    http://www.zjujournals.com/agr/CN/Y2011/V37/I4/465

No related articles found!