欢迎访问《日用化学工业（中英文）》，今天是
日用化学工业（中英文）

日用化学工业 ›› 2017, Vol. 47 ›› Issue (2): 96-103.doi: 10.13218/j.cnki.csdc.2017.02.008

• 开发与应用 • 上一篇    下一篇

纳米银在地下水环境中的转化过程研究

王晨1, 杨新瑶1, 袁雪梅1,3, 杨悦锁1,2   

  1. 1.沈阳大学 区域污染环境生态修复教育部重点实验室,辽宁 沈阳 110044;
    2.吉林大学 地下水和环境教育部重点实验室,吉林 长春 130021;
    3.四川农业大学 环境学院,四川 成都 611130
  • 收稿日期:2016-09-29 出版日期:2017-02-22 发布日期:2019-03-19
  • 通讯作者: 杨新瑶,博士生导师,E-mail:yangxinyao@hotmail.com。
  • 作者简介:王 晨(1990-),女,硕士研究生,E-mail:1126527473@qq.com。   
  • 基金资助:
    国家自然科学基金资助项目(41471409,41272255,41472237);沈阳市科学事业费竞争性选择资助项目

Transformation process of silver nanoparticles in underground-water environment

WANG Chen1, YANG Xin-yao1, YUAN Xue-mei1,3, YANG Yue-suo1,2   

  1. 1.Key Laboratory of Eco-restoration of Regional Contaminated Environment,Ministry of Education,Shenyang University,Shenyang,Liaoning 110044,China;
    2.Key Lab of Groundwater Environment and Resources,Ministry of Education,Jilin University,Changchun,Jilin 130021,China;
    3.School of Environment,Sichuan Agricultural University,Chengdu,Sichuan 611130,China
  • Received:2016-09-29 Online:2017-02-22 Published:2019-03-19

PDF (PC)

89

赞

摘要： 为探究可作为化妆品添加剂的纳米银(AgNPs)在进入地下水环境中的转化行为,采用仪器分析手段,从测定粒径、zeta电位、吸光度、SEM图和EDX能谱等几方面对聚乙烯吡咯烷酮-纳米银(PVP-AgNPs)在沈阳附近地区地下水体系中的转化过程进行了考察。实验结果表明:PVP-AgNPs加入到地下水样中后粒径变化明显,zeta电位值位于-12～-4 mV 之间,说明PVP-AgNPs处于快速聚凝状态,吸光度不变但吸收峰峰值不断降低证明PVP-AgNPs浓度逐渐降低,SEM图与EDX能谱结果显示PVP-AgNPs加入到地下水样中后会发生聚凝沉降,并在此过程中可以与其他离子结合形成共沉淀。此外,在溶解氧高,pH＜7的情况下,PVP-AgNPs先溶解释放出银离子从而导致PVP-AgNPs沉降的速度降低。

关键词: 化妆品添加剂, 纳米银, 地下水, 转化

Abstract: In order to explore the transformation behavior of entering of silver nanoparticles (AgNPs),which can be used as a cosmetic additive,into underground-water environment,instrumental analysis including determination of particle size,zeta potential and light absorbance as well as SEM image and EDX spectrum was adopted for investigation of polyvinylpyrrolidone coated AgNPs (PVP-AgNPs) transformation process entering into the underground-water system in an area nearby Shenyang city.The experimental results showed that after the addition of PVP-AgNPs into the underground-water samples,its particle size changes obviously,and zeta potential value locates between -12 and -4 mV;it indicates that the PVP-AgNPs is in a rapid coagulation state.The light absorbance remains unchanged,but the absorption peak decreases continuously,such phenomenon indicates that the concentration of PVP-AgNPs decreases gradually.The SEM images and EDX spectra indicate that addition of PVP-AgNPs into the underground-water will cause coagulation sedimentation and this process can be combined with other ions to form co-precipitation.In addition,in the case of highly dissolved oxygen state and pH<7,PVP-AgNPs will dissolve and release silver ions first,and result in the decrease of PVP-AgNPs settling speed.

Key words: cosmetic additive, AgNPs, underground-water, transformation

中图分类号: 

  • TQ658