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Electrochemical Attributes of Electrochemistry in Tandem with Electrospray Mass Spectrometry
Author(s) -
Looi Donq Wen,
Iftikhar Imran,
BrajterToth Anna
Publication year - 2014
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201300426
Subject(s) - electrochemistry , chemistry , electrolyte , ferrocyanide , hydroquinone , electrochemical cell , electrospray , flow battery , electrode , analytical chemistry (journal) , chromatography , inorganic chemistry , mass spectrometry , organic chemistry
Electrolytic efficiency of battery‐operated flow‐through thin‐layer electrochemical (EC; echem) cell used in EC/ESI‐MS was investigated. Two stainless steel capillaries joined by PTFE tubing formed the thin‐layer EC cell. Echem reaction efficiency of ferrocyanide, dopamine and hydroquinone oxidation in the EC cell was low and decreased with increasing MeOH volume fraction in the MeOH/H 2 O carrier solutions with low conductivity. Water oxidation dominated the cell current and migration of ferrocyanide was observed. Flow rate of 50–200 µL/h had a very small effect on EC cell current. Dopamine oxidation current in the EC cell and dopamine ion intensity in EC/ESI‐MS showed a direct correlation.