摘要
以液相色谱荧光检测器中的单色器为研究对象,分析了单色器杂散光的主要来源;通过ASAP软件建模,对单色器中杂散光的分布进行了模拟,提出了抑制杂散光的几种结构设计,包括光阑、叶片和挡板,研究比较了它们对杂散光的抑制效果;在单色器中同时加上这3种结构后,杂散光抑制比到达了80%以上.通过实验对模拟结果进行了验证,实验结果与模拟结果基本吻合.
The stray light is one of the most key performances of spectrum instruments,especially when the light signal to be detected is very weak.The main source of stray light in two monochromators of fluorescence detector for high performance liquid chromatography（HPLC） was analyzed.Through the ASAP software modeling,the formation and distribution of stray light in monochromator were simulated,several structures for stray light suppression were presented and designed,including the apertures,vanes and light baffles,then their stray light suppression effects were estimated.When these three structures are installed in the monochromator simultaneously,the stray light suppression ratio can reach up to 80%.The simulation results are verified through experiments,and the experimental results and the simulation results agree well.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2011年第11期1602-1606,共5页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金资助项目(61178083)
关键词
荧光检测器
单色器
杂散光
叶片结构
fluorescence detector
monochromator
stray light
vanes
