Imperial College London
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Dr Ali Salehi-Reyhani

Faculty of Medicine, Department of Surgery & Cancer

Lecturer
 
 
 
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Contact

 

ali.salehi-reyhani

 
 
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Location

 

Institute of Reproductive and Developmental BiologyHammersmith Campus

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Summary

 

Publications

Citation

BibTex format

@article{Chatzimichail:2019:10.1039/c9an01302d,
author = {Chatzimichail, S and Casey, D and Salehi-Reyhani, A},
doi = {10.1039/c9an01302d},
journal = {The Analyst},
pages = {6207--6213},
title = {Zero electrical power pump for portable high-performance liquid chromatography},
url = {http://dx.doi.org/10.1039/c9an01302d},
volume = {144},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - A major trend in analytical chemistry is the miniaturization of laboratory instrumentation. We report a pump requiring no power to operate based on the controlled expansion of a pre-pressurised gas for use in portable applications of high-performance liquid chromatography. The performance of the gas pump is characterised and integrated into a compact liquid chromatography system capable of isocratic separations integrating an LED-based UV-absorption detector. The system weighed 6.7 kg when the mobile phase reservoir was fully charged with 150 mL solvent and included an on-board computer to control the system and analyse data. We characterise the flow-rate through chromatography columns with a variety of geometries and packing materials for a range of pressures up to 150 bar. The maximum variation in flow rate was measured to be 6.5 nL min−1, limited by the resolution of the flow detector. All tests were made on battery power and results are a mixture of those made in the laboratory and in the field. Additionally, we performed a series of 1 m drop tests on the device and show the system's high tolerance to mechanical shocks during operation in the field.
AU  - Chatzimichail,S
AU  - Casey,D
AU  - Salehi-Reyhani,A
DO  - 10.1039/c9an01302d
EP  - 6213
PY  - 2019///
SN  - 0003-2654
SP  - 6207
TI  - Zero electrical power pump for portable high-performance liquid chromatography
T2  - The Analyst
UR  - http://dx.doi.org/10.1039/c9an01302d
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000512376900005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/81563
VL  - 144
ER  -
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