日用化学工业2017，Vol.47Issue(2)：96-103,8.DOI:10.13218/j.cnki.csdc.2017.02.008
纳米银在地下水环境中的转化过程研究
Transformation process of silver nanoparticles in underground-water environment
摘要
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.关键词
化妆品添加剂/纳米银/地下水/转化Key words
cosmetic additive/AgNPs/underground-water/transformation分类
化学工程引用本文复制引用
王晨,杨新瑶,袁雪梅,杨悦锁..纳米银在地下水环境中的转化过程研究[J].日用化学工业,2017,47(2):96-103,8.基金项目
国家自然科学基金资助项目(41471409,41272255,41472237) （41471409,41272255,41472237）
沈阳市科学事业费竞争性选择资助项目 （）
