Citation: LING Xing, DING Chuan-Fan. Development of Control System for Electrochemistry/Electrospray Ionization Source[J]. Chinese Journal of Analytical Chemistry, ;2012, 40(10): 1627-1631. doi: 10.3724/SP.J.1096.2012.11361 shu

Development of Control System for Electrochemistry/Electrospray Ionization Source

LING Xing ,
DING Chuan-Fan ^,

1.
Department of Chemistry, Fudan University, Shanghai 200433, China

Corresponding author: DING Chuan-Fan,
Received Date: 2 December 2011
Available Online: 28 May 2012
Fund Project: 本文系国家科技支撑计划(No.2009BAK60B03) (No.2009BAK60B03)中国博士后科学基金(No.20110490652)资助项目 (No.20110490652)

A control system for an electrochemistry/electrospray ionization source (EC/ESI source) was designed and fabricated. The system includes two parts, a homemade embedded potentiostat floated on electrospray high voltage, and a remote computer, which communicates with the potentiostat through a Bluetooth wireless interface. The accuracy of potential is controlled in the range of ±1 mV, and the accuracies of the current measurements are ±0.1 μA (gain=0.01 V/μA) and ±0.01 μA (gain=0.1 V/μA). The performance of the control system was tested by cyclic voltammetry and online electrochemistry/electrospray ionization mass spectrometry (online EC/ESI-MS) using 9,10-diphenylanthrance as a model compound. Accurate potential control was achieved and most importantly, 9,10-diphenylanthrance, a non-polar compound usually undetectable by electrospray ionization mass spectrometry, was detected in high abundance.
- Electrochemistry,
- Electrospray ionization mass spectrometry,
- Ionization source,
- Online coupling,
- Non-polar compound
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