Contactless conductivity detection for analytical techniques—Developments from 2012 to 2014

Abstract

The review covers the progress of capacitively coupled contactless conductivity detection over the 2 years leading up to mid-2014. During this period many new applications for conventional CE as well as for microchip separation devices have been reported; prominent areas have been clinical, pharmaceutical, forensic, and food analyses. Further progress has been made in the development of field portable instrumentation based on CE with contactless conductivity detection. Several reports concern the combination with sample pretreatment techniques, in particular electrodriven extractions. Accounts of arrays of contactless conductivity detectors have appeared, which have been created for quite different tasks requiring spatially resolved information. The trend of the use of contactless conductivity measurements for applications other than CE has continued.

Contactless conductivity detection for analytical techniques— Developments from 2014 to 2016

“…About 100 publications on C 4 D have appeared from June 2014 to April 2016, the approximate period covered by this review. This matches the numbers seen in the previous reviews prepared for the 2 year periods from 2012–2014 and 2010–2012 .…”

Authenticity screening of seized whiskey samples using electrophoresis microchips coupled with contactless conductivity detection

“…The coupling of ME with electrochemical detection has received considerable attention due to the compatibility with microfabrication technologies and also the possibility to integrate channels and electrodes in a single platform . Among the electrochemical approaches, the capacitively coupled contactless conductivity detection (C 4 D) has become increasingly popular in the last years to monitor microscale separations . Although ME‐C 4 D devices are considered powerful platforms for the analysis of ionic species beverages , to the best of our knowledge their use for the authenticity control of alcoholic drinks has not been reported in the literature.…”

Recent advances in capillary electrophoretic migration techniques for pharmaceutical analysis (2013–2015)

“…Cations migrating to the cathode and anions migrating to the anode will pass a detector in the center of the capillary. The application of dual‐opposite end injection for simultaneous determination of drug and its counter‐ion applying either UV or C 4 D detection was reported . Particularly the use of dual‐opposite end injection and contactless conductivity detection (DOE‐CE‐C 4 D) is currently an attractive CE approach to easily quantify a drug and its counter‐ion in the same run .…”