Abstract： The concentrations of 13 kinds of monodispersive polystyrene microspheres with different sizes were determined by turbidimetric method respectively. The effects of particle size, temperature and storage time on the turbidity of suspension were studied. The experimental results show that the relationships between concentrations and turbidity of monodispersive polystyrene microspheres are significant in the test range. By these obtained correlations, the concentrations of monodispersive polystyrene microspheres can be rapidly calculated. The turbidimetric method shows a relative standard deviation of 1.87% ~6.36% with a detection limit of 0.01~3.88 mg/L in mass concentration. The recoveries of standards added to the suspension of monodispersive polystyrene microspheres are between 93.1% and 110.0%.

Keywords: polystyrene microspheres; monodispersion; turbidity; rapid determination

中图分类号：O632.13         文献标志码：A

文章编号：1008-5548（2014）05-0019-05

DOI:10.13732/j.issn.1008-5548.2014.05.005

收稿日期：2014-06-09， 修回日期：2014-08-07，在线出版时间：2014-10-11。

基金项目：国家海洋公益性行业科研专项项目，编号：201105025；中央级公益性科研院所基本科研业务费专项项目，编号：K-JBYWF-2011-T04。

第一作者简介：王以华（1961—），女，工程师，从事海水淡化膜产品及水质检测技术研究。电话：022-87899081-811，E-mail: 2413969883@qq.com。