黑麦草在修复铜-芘复合污染水体过程中对污染物的富集效应  

Enrichment of contaminants by ryegrass in the phytoremediation process of copper-pyrene co-contaminated water

作　　者：彭辉[1] 陈智林[2,3] 尹华[2,3] 叶锦韶[2,3] 何宝燕[2,3] 李跃鹏[2,3] 张娜[2,3] 彭素芬[2,3] 

机构地区：[1]暨南大学化学系,广州510632 [2]暨南大学环境工程系,广州510632 [3]暨南大学广东省高校水土环境毒害性污染物防治与生物修复重点实验室,广州510632

出　　处：《环境化学》2012年第1期57-63,共7页Environmental Chemistry

基　　金：国家自然科学基金(U0933002;50978122;50778081);广东省自然科学基金(9151027501000055)资助

摘　　要：采用水培实验的方法,研究了黑麦草对铜和芘复合污染体系的修复能力、黑麦草不同部位对铜和芘的富集效应.结果表明,黑麦草能在96 h内使水体中铜和芘的浓度显著降低,分别由5 mg.L-1和0.1 mg.L-1降低至0.49 mg.L-1和0.009 mg.L-1;黑麦草根部对铜和芘的积累量和富集系数明显大于茎叶,随着铜处理浓度的增加,根和茎叶中铜的积累量随之增加,而根中铜的生物富集系数却随之降低,黑麦草根和茎叶中芘的积累量分别在4.65—5.39 mg.kg-1和0.81—1.08 mg.kg-1之间,铜对水体中芘的去除以及根和茎叶中芘的积累均无显著性影响.A hydroponic experiment was conducted to investigate the capacity of Lolium multiflorum Lam（ryegrass） to remove copper and pyrene in water,focusing on the effect of different parts of ryegrass on Cu and pyrene enrichment.The results revealed that within 96 h,the concentrations of copper and pyrene decreased,from 5.00 mg · L-1 and 0.10 mg · L-1 to 0.49 mg · L-1and 0.009 mg · L-1,respectively.The contents and biological concentration factor（BCF） of copper in ryegrass root exceeded those in shoot.With increasing copper concentration,the accumulation of copper in root and shoot was enhanced,while BCF in root was decreased.The accumulation of pyrene by root and shoot of ryegrass was 4.65—5.39 mg · kg-1 and 0.81—1.08 mg · kg-1,respectively.Copper had no significant effects on both the removal of pyrene from the solution and the accumulation of pyrene in root and shoot of ryegrass.

关 键 词：铜 芘 黑麦草 富集 

分 类 号：X703[环境科学与工程—环境工程] X173