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当前位置: 首页 > 文章 > 水葱对五氯酚污染土壤植物修复的初步研究 农业环境科学学报 2006,25 (06) 1493-1497
Position: Home > Articles > Phytoremediation of Pentachlorophenol-contaminated Soil by Scirpus tabernaemontani Gmel Journal of Agro-Environment Science 2006,25 (06) 1493-1497

水葱对五氯酚污染土壤植物修复的初步研究

作  者：
熊珺;高创新;袁恒;杨劭;王学东
单  位：
华中师范大学生命科学学院;华中师范大学化学学院
关键词：
水葱;五氯酚;生物富集;衍生化;残留量
摘  要：
采用水池栽培水葱(ScirpustabernaemontaniGmel),研究了该植物对土壤中五氯酚(PCP)的生物富集能力。结果表明,供试污染土壤中五氯酚的起始浓度为2000.00μg.kg-1,经30、60、90、120d后种植水葱培养池土壤中五氯酚的含量分别为起始浓度的28.34%、1.03%、0.86%和0.088%;而对照未种植水葱的培养池土壤中五氯酚的含量分别为起始浓度的95.09%、81.17%、71.32%和63.75%;水葱根部五氯酚的含量由起始的579.55μg.kg-1,30d后达到最高富集量即2090.00μg.kg-1,由此证实水葱对五氯酚具有一定的富集能力。因此,利用水葱修复土壤中难降解有机污染物五氯酚是一项可行的技术。
译  名：
Phytoremediation of Pentachlorophenol-contaminated Soil by Scirpus tabernaemontani Gmel
作  者：
XIONG-Jun1,3,GAO Chuang-xin2,YUAN Heng2,YANG Shao2,WANG Xue-dong1(1.College of Chemistry,Central China Normal University,Wuhan 430079,China;2.College of Life Science,Central China Normal University,Wuhan 430079,China;3.College of Chemistry and Molecular Sciences,Wuhan University,Wuhan 430072,China)
关键词：
Scirpus tabernaemontani Gmel;pentachlorophenol;bioaccumulation;derivatization;residue
摘  要：
Phytoremediation is a cost-effective method to detoxify the contaminated soil by organic matter.The ability of Chinese shallot(Scirpus tabernaemontani Gmel)to bioaccumulate PCP from soil was investigated.When the initial fortification concentration was 2 000.00 μg·kg-1 in soil,the recovered residues of PCP in shallot-planted soil only accounted for 28.34% and 1.03% of the initial level at 30 and 60 days after treatment(DAT),respectively,and completely disappeared(>99.00%) after 90 days.In contrast,the concentrations of PCP in treatment without grown shallot represented 95.09%,81.17%,71.32% and 63.75% of the initial level at 30,60,90,and 120 DAT respectively.The dynamics of PCP could be well described by the first-order kinetic equation in both shallot-planted and unplanted treatment,and the correspondingly estimated half-lives were 11.83 days and 173.25 days,respectively.The PCP degradation in shallot-planted soil approximately was 15 times of that in unplanted soil.In addition,it was also monitored that PCP residue(579.55 μg·kg-1) in shallot root at the beginning of the experiment increased and reached the peak of 2 090.00 μg·kg-1 at 30 DAT.These results demonstrated that shallot had a high bioaccumulation capacity for PCP and could be used as a good alternative plant to remediate PCP-polluted soil or sediment in water system.

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