高级搜索

蜈蚣草根部对As(Ⅲ)的吸收特性

,  ,  ,  ,  , 

downloadPDF

上一篇

下一篇

宋卫锋, 严明, 林梓河, 罗丽丽, 张坤峰, 邓琪. 蜈蚣草根部对As(Ⅲ)的吸收特性[J]. 环境化学, 2011, 30(8): 1422-1427.
引用本文: 宋卫锋, 严明, 林梓河, 罗丽丽, 张坤峰, 邓琪. 蜈蚣草根部对As(Ⅲ)的吸收特性[J]. 环境化学, 2011, 30(8): 1422-1427.
shu
SONG Weifeng, YAN Ming, LIN Zihe, LUO Lili, ZHANG Kunfeng, DENG Qi. THE ABSORPTION CHARACTERISTICS OF ARSENIC(Ⅲ) BY PTERIS VITTATA ROOT SEGMENT[J]. Environmental Chemistry, 2011, 30(8): 1422-1427.
Citation: SONG Weifeng, YAN Ming, LIN Zihe, LUO Lili, ZHANG Kunfeng, DENG Qi. THE ABSORPTION CHARACTERISTICS OF ARSENIC(Ⅲ) BY PTERIS VITTATA ROOT SEGMENT[J]. Environmental Chemistry, 2011, 30(8): 1422-1427.
shu

蜈蚣草根部对As(Ⅲ)的吸收特性

  • 1.

    广东工业大学环境科学与工程学院, 广州, 510006

THE ABSORPTION CHARACTERISTICS OF ARSENIC(Ⅲ) BY PTERIS VITTATA ROOT SEGMENT

  • 1.

    Faculty of Environment Science and Engineering,Guangdong University of Technology, Guangzhou, 510006, China

  • 摘要: 采用水培实验对蜈蚣草吸收As(Ⅲ)的吸收特性进行了研究,结果表明在各个处理浓度范围内,培养液中As(Ⅲ)的吸收效率随着时间递增.当处理浓度为10 mg·L-1时,24 h后蜈蚣草对As(Ⅲ)的吸收高达97.57%,而在处理浓度为500 mg·L-1和1000 mg·L-1时,蜈蚣草对As(Ⅲ)的吸收比例明显降低,吸收百分比分别仅有16.5%和3.43%.根据改良的Michaelis-Menten方程,通过作图法求出了As(Ⅲ)初始浓度为10 mg·L-1时,蜈蚣草吸收动力学参数vmax值为(0.183±0.006) mg·h-1·g-1,Km值(2.590±0.080) mg·L-1.
    Abstract: In this paper, water culture experiment was employed to study arsenic absorption characteristics by Pteris vittata root segment. The results showed that accumulation efficiency of all treatment concentrations increased along with experiment time. When the concentration was 10 mg·L-1, the absorption ratio was as high as 97.57% within 24 hours. But when the treatment concentrations were 500mg·L-1 and 1000 mg·L-1, the absorption ratios were significantly lower, which were only 16.5% and 3.43% respectively. According to the modified Michaelis-Menten equation, Vmax and Km were calculated using Line-weaver-Burk illustration method for the 10 mg·L-1 As(Ⅲ) experimental data, which were (0.183±0.006) mg·h-1·g-1 and (2.590±0.080) mg·L-1 respectively.
  • 加载中
  • [1] 谢正苗,廖敏,黄昌勇.砷污染对植物和人体健康的影响及防治政策[J].广东微量元素科学,1997, 4(7):17-21
    [2] Cao X, Ma L Q, Shiralipour A. Effects of compost and phosphate amendments on arsenic mobility in soils and arsenic uptake by the hyper-accumulator, Pteris vittata L.[J].Environmental Pollution,2003,126:157-167
    [3] Kertulis G M, Ma L Q, MacDonald G E, et al. Arsenic speciation and transport in Pteris vittata L. and the effects on phosphorus in the xylem sap[J]. Environmental and Experimental Botany,2005,54:239-247
    [4] Poynton C Y, Huang J W, Blaylock M J, et al. Mechanisms of arsenic hyper-accumulation in Pteris species: root As influx and translocation[J].Planta, 2004, 219:1080-1088
    [5] Wang J R, Zhao F J,Meharg A A,et al.Mechanisms of arsenic hyper-accumulator in Ptens vittata: uptake kinetics, interactions with phosphate and arsenic speciation[J].Plant Physiology,2002,130:1552-1561
    [6] Huang Z C,Chen T B,Lei M,et al.Direct determination of arsenic species in arsenic hyperaccumulator Pteris vittata by EXAFS[J]. Acta Botanica Sinica,2004,46:46-50
    [7] Ma L Q,Komar K M,Tu C,et al.A fern that hyperaccumulates arsenic[J].Nature,2001,409:579
    [8] Tu C,Ma L Q,Zhang W H,et al. Arsenic species and leachability in the fronds of the hyperaccumulator Chinese brake (Pteris vittata)[J].Environmental Pollution,2003,124: 223-230
    [9] Lena Q Ma. Effects of arsenic and phosphate on their accumulation by an arsenic-hyperaccumulator pteris vittatal[J]. Plant and soil, 2003,249:373-382
    [10] Zhang W H, Cai Y, Tu C, et al. Arsenic speciation and distribution in an arsenic hyper-accumulating plant[J].The Science of the Total Environment,2002,300:167-177
    [11] Hall G E M, Pelchat J C, Gauthier G. Stability of inorganic arsenic(Ⅲ)and arsenic(Ⅴ)in water samples[J].Journal of Analytical Atomic Spectrometry,1999 (14):205
    [12] Tu S, Ma L Q. Comparison of arsenic and phosphate uptake and distribution in arsenic hyper accumulating and non-hyperaccumulating fern [J]. Journal of Plant Nutrition, 2004, 27:1277-1242
  • 加载中
WeChat 点击查看大图
计量
  • 文章访问数:  1286
  • HTML全文浏览数:  1253
  • PDF下载数:  292
  • 施引文献:  0
出版历程
  • 收稿日期:  2010-10-30
宋卫锋, 严明, 林梓河, 罗丽丽, 张坤峰, 邓琪. 蜈蚣草根部对As(Ⅲ)的吸收特性[J]. 环境化学, 2011, 30(8): 1422-1427.
引用本文: 宋卫锋, 严明, 林梓河, 罗丽丽, 张坤峰, 邓琪. 蜈蚣草根部对As(Ⅲ)的吸收特性[J]. 环境化学, 2011, 30(8): 1422-1427.
shu
SONG Weifeng, YAN Ming, LIN Zihe, LUO Lili, ZHANG Kunfeng, DENG Qi. THE ABSORPTION CHARACTERISTICS OF ARSENIC(Ⅲ) BY PTERIS VITTATA ROOT SEGMENT[J]. Environmental Chemistry, 2011, 30(8): 1422-1427.
Citation: SONG Weifeng, YAN Ming, LIN Zihe, LUO Lili, ZHANG Kunfeng, DENG Qi. THE ABSORPTION CHARACTERISTICS OF ARSENIC(Ⅲ) BY PTERIS VITTATA ROOT SEGMENT[J]. Environmental Chemistry, 2011, 30(8): 1422-1427.
shu

蜈蚣草根部对As(Ⅲ)的吸收特性

  • 1. 广东工业大学环境科学与工程学院, 广州, 510006
  • 收稿日期:  2010-10-30

摘要: 采用水培实验对蜈蚣草吸收As(Ⅲ)的吸收特性进行了研究,结果表明在各个处理浓度范围内,培养液中As(Ⅲ)的吸收效率随着时间递增.当处理浓度为10 mg·L-1时,24 h后蜈蚣草对As(Ⅲ)的吸收高达97.57%,而在处理浓度为500 mg·L-1和1000 mg·L-1时,蜈蚣草对As(Ⅲ)的吸收比例明显降低,吸收百分比分别仅有16.5%和3.43%.根据改良的Michaelis-Menten方程,通过作图法求出了As(Ⅲ)初始浓度为10 mg·L-1时,蜈蚣草吸收动力学参数vmax值为(0.183±0.006) mg·h-1·g-1,Km值(2.590±0.080) mg·L-1.

English Abstract

    全文HTML

参考文献 (12)

返回顶部

目录

/

返回文章
返回

Copyright © 2019 中国科学院生态环境研究中心