分析化学2013，Vol.41Issue(7)：1063-1068,6.DOI:10.3724/SP.J.1096.2013.21224
非对称场流分离技术用于纳米颗粒的表征
Characterization of Nanoparticle Diameter by Asymmetrical Flow Field-Flow Fractionation
刘攀攀 1全灿 2李红梅 2金君素1
作者信息
- 1. 北京化工大学化学工程学院,北京100029
- 2. 中国计量科学研究院化学计量与分析科学研究所,北京100013
- 折叠
摘要
Abstract
This study introduced the general method of asymmetrical flow field-flow fractionation for the particle size measurement of polystyrene latexes.The separation took place under the influence of flow field generated by a cross flow where 0.1％ SDS and 0.02％ NaN3 aqueous solution as cartier phase.Several experimental parameters were optimized including focusing time,cross flow rate,injection mass and channel flow rate,which was important for quantification.It was found that AF4 was particularly useful and simple for the determination of particle size,because the elution profile could be converted to the particle size on the basis of the equation directly.Each sample was injected ten times and the relative standard deviation was less than 1％,which showed that AF4 had high stability.The comparison results of mean diameter determined by AF4 and scanning electron microscope (SEM) showed that the mean diameter of SEM was lower than those obtained from AF4 or provided by manufacturers,therefore AF4 was more accuracy and precise than SEM,which could be developed as an accurate method for size characterization.关键词
非对称场流分离/扫描电镜/纳米颗粒/表征Key words
Asymmetrical flow field-flow fractionation/ Scanning electron microscope/ Polystyrene latex sphere standard / Characterization引用本文复制引用
刘攀攀,全灿,李红梅,金君素..非对称场流分离技术用于纳米颗粒的表征[J].分析化学,2013,41(7):1063-1068,6.
