新型富集仪的研制及其实验教学应用

Development of New Enrichment Apparatus and Its Applications in Analytical Chemistry Laboratory Course

报道了新型实验教学仪器——"毛细管电泳富集仪"的研制及实验教学开发应用。对该仪器的工作原理、仪器性能、工作参数以及实际富集效果和教学应用进行了详细的说明和讨论,对于影响样品富集效果的各个因素进行了探讨。实验结果表明,该仪器的实际富集因子可达560倍。采用研制的毛细管电泳富集仪对原有实验进行深度开发,深化和丰富了仪器分析实验的实验教学内容。

An innovative home-made teaching apparatus, named capillary electrophoresis enrichment apparatus was developed and used in the undergraduate analytical chemistry laboratory course. The main contents of this developed enrichment apparatus, including the principle, the performance parameters, the operating instructions, enrichment factor and applications in teaching process, were introduced and discussed in detail. Based on the particle samples, the enrichment efficiency and influencing factors were roundly tested. As a result, this laboratory-built enrichment apparatus can provide 560-fold enrichment factor, which will greatly improve the detection limits and expand the applications of capillary electrophoresis, as well as instrumental analytical methods in many fields. The original instrumental analytical chemistry experiment had been deeply modified using this apparatus in order to train the undergraduates with more complex assay. This newly developed enrichment apparatus is easy-to-use as well as cost-effective, and presents highly enhanced sensitivity.