CHEN Shengli,ZHAO Xiangdong,SUN Wei,CHEN Sheng,ZHU Xiuqin

(College of Chemical and Envirmont Engineering,China Univresity of Petroleun(Beijing),Beijing 102249，China； Beijing Nanometer Standard Materials Co.,Ltd.，Beijing 102200，China)

Abstract:Four kinds of samples of monodisperse polystyrene (PS)microspheres and one kind of sample of monodisphere silica microspheres used for microsize standards were synthesized through seeded growth method.Particle sizes of the five kinds of microspheres were determined by using arraysizing-optical microscopy method and SEM method.The magnification of the optical microscopy and SEM were calibrated with the NIST stage micrometer of SRM2800 and a SEM pitch calibration standard，respectively.The certified values of these calibration standards were traced to He-Ne laser wavelength.The results show that the average particle sizes of the four kinds of PS microspheres are (15.37±0.07),(28.95±0.12),(66.49±0.15),(116.4±0.3)μm，respectively.The average size of silica microspheres is (9.97±0.05)μm.The samples are uniform and stable,and the detemination results are reliable.

Keywords:particle size;reference material;polystyrene microsphere;silica microsphere;array sizing

中图分类号： TQ577.7+7                          文献标志码：A

文章编号：1008-5548(2022)02-0061-09

DOI:10.13732/j.issn.1008-5548.2022.02.008

收稿日期： 2021-08-24，修回日期：2021-10-04，在线出版时间：2022-02-08。

基金项目：国家自然科学基金项目，编号：91534120。

第一作者简介：陈胜利(1962—)，男，博士，教授，博士生导师，研究方向为新材料、催化剂及催化反应工程、烃加工、标准化等。E-mail:shenglichen62@163.com;slchen@cup.edu.cn。