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Direct Electrolysis and Detection of Single Nanosized Water Emulsion Droplets in Organic Solvent Using Stochastic Collisions
Author(s) -
Lee Jungeun,
Ho Thy L. T.,
Kim HaeYoung,
Park Jun Hui,
Kim ByungKwon
Publication year - 2019
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.201800726
Subject(s) - ultramicroelectrode , chronoamperometry , chemistry , electrolysis , solvent , electrochemistry , emulsion , electrolysis of water , chemical engineering , organic solvent , current (fluid) , anode , analytical chemistry (journal) , cyclic voltammetry , electrolyte , chromatography , electrode , organic chemistry , engineering , electrical engineering
We studied the electrochemical detection of single nanosized water emulsion droplets in organic solution using the electrochemical collision technique on an ultramicroelectrode (UME). In this experiment, the detection system for water droplets does not require any kind of redox species in organic solvent. Only water molecules in the water droplets were considered. When water droplets collided with the UME surface, anodic current spikes were observed in the chronoamperometry, resulting from the electrolysis of water molecules in the water droplets. From the collision frequency and integrated current spike, concentrations and size distributions of water droplets in organic solvent can be determined.