气相色谱仪的两种液体样品自动进样器的兼容设计与研制  

Study and Compatible Design of Two Types of Liquid Auto Sampler for Gas Chromatographer

作　　者：陈莲[1] 肖滢[1] 陈世斌 陈天昱 张西咸[1] 

机构地区：[1]中国政法大学科学技术教学部,北京102249 [2]北京世能通宇科技有限公司,北京100176 [3]清华大学信息科学技术学院,北京100084

出　　处：《分析化学》2016年第8期1308-1313,共6页Chinese Journal of Analytical Chemistry

基　　金：国家"十一五"科技支撑计划课题(No.2006BAK03A04);教育部人文社会科学研究青年基金项目(No.12YJC880123)资助~~

摘　　要：设计和构建了多轴多模式、闭环伺服控制系统的研发平台,实现了用于气相色谱仪的不同结构的两种液体自动进样器的并行设计与研制。基于兼容与互换的思路,开发出一体化嵌入式控制驱动模块,采用相同的直流电机、编码器,电气与机械接口统一标准,实现了上述组件在两种机型间的直接代换。研制的标准型110个样品位和平台型40个样品位两种液体自动进样器,与气相色谱仪联机,采用1μL手动进样针,对于0.5μL十六烷-异辛烷标准液体样品,6个不同瓶位连续6次进样测试,重复进样的信号峰面积RSD分别为1.1%和1.5%,取0.1,0.3,0.5,0.7和0.9μL进样,峰面积与进样量的线性相关系数为0.9947。We carried out parallel design and development of two differently structured auto sampler based on a multi-axis and multi-mode high-precision closed-loop servo control system. An integrated embedded control drive module was developed based on the idea of compatibility and inter-changeability, so that DC motor and encoder were standardized into uniform models. Meanwhile, electric and mechanical interfaces were uniformed to a same standard. This allows the direct exchange of above-mentioned components between the two models. A 1-μL manual sample injection syringe was installed on both standard 110-sample and platform 40-sample liquid auto sample injectors connected with gas chromatographer. Approximately 0. 5μL of cetane-isooctyl was sampled for 6 consecutive times at six different positions in the sample bottle. The repeatability RSDs of the injection peak areas of the two systems were 1. 1% and 1. 5%, respectively. A linear correlation coefficient （0. 9947） of peak area with injection volume was achieved based on the gradient sampling volume of 0. 1, 0. 3, 0. 5, 0. 7 and 0. 9 μL.

关 键 词：气相色谱 自动进样器 平台化设计 模块 兼容 

分 类 号：O657.31[理学—分析化学]