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Citation: CHEN Lian, XIAO Ying, CHEN Shi-Bin, CHEN Tian-Yu, ZHANG Xi-Xian. Study and Compatible Design of Two Types of Liquid Auto Sampler for Gas Chromatographer[J]. Chinese Journal of Analytical Chemistry, ;2016, 44(8): 1308-1313. doi: 10.11895/j.issn.0253-3820.160219 shu

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

1.
Department of Science and Technology, China University of Political Science and Law, Beijing 102249, China;
2.
Beijing ShineCosmos Technology Co., LTD, Beijing 100176, China;
3.
School of Information Science and Technology, Tsinghua University, Beijing, 100084, China

Received Date: 22 March 2016
Revised Date: 18 June 2016

Fund Project: This work was supported by the Eleventh Five-Year Science and Technology Support Program of China (No.2006BAK03A04) and a Youth Research Grant of the Ministry of Education of China (No. 12YJC880123)

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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 0.5 μL 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.
- Gas chromatography,
- Auto sampler,
- Platform design,
- Modularity,
- Compatibility
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