高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (2): 349.

• 研究论文 • 上一篇    下一篇

DNA改性聚砜多孔微球选择性清除环境激素

赵长生1, 杨开广1, 野水基义2, 西则雄2   

  1. 1. 四川大学高分子科学与工程学院,生物高分子材料及人工器官系,成都 610065;
    2. 日本北海道大学,大学院地球环境科学研究科,札幌 010-0810
  • 收稿日期:2004-02-23 出版日期:2005-02-10 发布日期:2005-02-10
  • 通讯作者: 赵长生(1970年出生),男,教授,主要从事生物及医用高分子材料方面的研究.E-mail:zhaochsh70@163.com; zhaochsh70@yahoo.com.cn E-mail:zhaochsh70@163.com; zhaochsh70@yahoo.com.cn
  • 基金资助:

    四川大学引进人才基金(批准号:200403)资助

DNA-modified Porous Polysulfone Microspheres for Selective Removal of Endocrine Disruptors

ZHAO Chang-Sheng1, YANG Kai-Guang1, Motoyoshi Nomizu2, Norio Nishi2   

  1. 1. College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China;
    2. Graduate School of Environmental Earth Science, Hokkaido University, Kita-ku, Sapporo 060-0810, Japan
  • Received:2004-02-23 Online:2005-02-10 Published:2005-02-10

摘要: 将DNA视为生物大分子材料,制成DNA改性聚砜微球,在生物体外考察改性微球对环境激素,包括重金属离子的选择性清除.制备了2种改性聚砜微球:DNA共混微球(将DNA共混入聚砜溶液,当混合溶液滴入水中时,发生相分离而沉淀)和DNA表面改性聚砜微球(先制备聚砜多孔微球,再通过紫外线照射的方法将DNA接枝到聚砜微球表面).两种DNA改性聚砜微球在水中比较稳定,在酸或碱性条件下,由于DNA水解而不稳定.对环境激素的清除结果表明,DNA改性聚砜微球可以选择性清除包括联苯、苯酚和二恶荚类环境荷尔蒙物质;同时选择性吸附锌、铜、银、铅和铬等重金属离子.

关键词: DNA, 聚砜微球, 环境激素, 液-液相分离

Abstract: DNA was regarded as a naturally occurring biopolymer, and was used to modify polysulfone(PSf) porous microspheres. The DNA-modified microspheres are used to selectively remove endocrine disruptors and heavy met al ions. The DNA-modified PSf microspheres can be prepared using two methods: DNA-blended PSf microspheres and DNA surface modified PSf microspheres. The microspheres, made in the two ways above, are stable in water while they are hydrolyzed under acidic and alkaline conditions. The DNA-modified porous PSf microspheres can effectively remove biphenyl, dibenzofuran and dibenzo-p-dioxin, and can selectively accumulate and remove heavy mental ions.

Key words: DNA, Polysulfone microspheres, Endocrine disruptors, Liquid-liquid phase separation

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