论文部分内容阅读
在薄层层析和纸层析过程中,由于样品、展开剂、层析材料的不同,造成它们在薄层或纸层的爬行速度不同,快的几分钟,一般十几分钟,慢到几小时,需要操作者在旁守候。本装置可在层析时,溶剂前沿到达预定的位置时发出声音或光亮报警提醒操作者。其原理是:在薄层板或纸层滤纸预定位置安装检测探头,利用展开剂遇到检测探头挥发时带走热量引起其温度的降低,从而导致检测探头参数的变化,使电桥翻转,其输出信号带动报警部件动作,实现层析终了的自动报警〔1〕。
In thin layer chromatography and paper chromatography, due to the sample, the developer, the different chromatographic materials, causing them to crawl in the thin layer or layer of paper speed is different, fast a few minutes, usually ten minutes, slow to a few Hours, you need to wait for the operator. The device can be in chromatography, the solvent front reaches a predetermined position when the sound or light alarm to remind the operator. The principle is: installing a detection probe at a predetermined position on a thin layer of paper or paper filter, using a developing agent to encounter the heat of the detection probe, causing the temperature to drop when the detection probe volatilizes, thereby causing the change of the detection probe parameter, The output signal drives the action of the alarm unit to achieve the end of the chromatographic automatic alarm 〔1〕.