摘要
对4个旱柳(Sailx matsudana)无性系8,10,18和22号进行了水培试验,研究了96 h后旱柳对水中2,4-二氯苯酚(2,4-DCP)的去除和吸收积累能力.结果表明:旱柳可促进2,4-DCP降解,在96 h内4个旱柳无性系8,10,18和22号对20 mg/L的2,4-DCP去除率分别为56.63%,59.85%,55.17%和56.90%.将4个旱柳无性系分别曝露在10,20和30 mg/L的2,4-DCP环境中,随着ρ(2,4-DCP)的增大,根系和地上部分中的w(2,4-DCP)增加,且根>茎叶;10号无性系地上部分未检测出2,4-DCP且其根系中的w(2,4-DCP)显著低于其他无性系;22号根系和地上部分的w(2,4-DCP)均显著高于其他无性系.水溶液中ρ(2,4-DCP)小于20 mg/L时,2,4-DCP对旱柳生长无显著抑制作用.不同旱柳无性系对2,4-DCP均具有一定的吸收蓄积能力.
Four Salix matsudana clones Number 8, 10,18 and 22 were used to be tested in water for 96 h. The eliminate efficiency, uptake and accumulation of Salix matsudana to 2,4-DCP in water solution were studied. The results indicated that： Salix matsudana clones Number 8, 10, 18 and 22 promoted 2,4-DCP degradation significantly compared with the control, removing 56.63%, 59.85%, 55.17% and 56.90% of 20 mg/L 2,4-DCP in 96 h, respectively. Four Salix matsudana clones were exposed to 2,4-DCP at 10, 20 and 30 mg/L mass concentrations. 2,4-DCP in root, shoot increased with initial 2,4-DCP mass concentration in solution. The 2,4-DCP content in different parts of plant is in the order of root 〉 shoot. 2,4-DCP was not detected in Number 10 clone＇s shoot and content in root was lower than other clones mostly. The content of 2,4-DCP in root and shoot in Number 22 was larger than other clones. Salix matsudana bad not been distinctly restrained when the 2,4-DCP mass concentration was under 20 mg/L. Sailx matsudana had its special characteristic and some uptake and accumulation capacity for 2,4-Dichlorophenol pollution in the environment.
出处
《环境科学研究》
EI
CAS
CSCD
北大核心
2008年第5期139-144,共6页
Research of Environmental Sciences
基金
浙江省科技厅重大科研项目(2006C12065)
浙江省-中国林科院合作项目(2006SY10)
关键词
旱柳
无性系
2
4-二氯苯酚
耐性
降解
吸收
积累
Salix matsudana
clone
2,4-Dichlorophenol
tolerance
degradation
uptake
accumulation
