Development of a micro-potentiometric sensor for the microchip analysis of alkali ions.
This paper reports on the development of a micro-potentiometric sensor based on external microelectrodes introduced into a microchip. We miniaturized reference and ion-selective electrodes (ISEs) and embedded them into a plastic (PDMS) microchip; the miniaturization of ISE was attained by using a monolithic capillary-based membrane. This sensor was applied to the detection of alkali ions (Na+, K+ and NH4+) in a microflow on the microg/L level.
Smirnova
Adelina
A
Microchemistry Group, Kanagawa Academy of Science and Technology, 3-2-1 Sakado, Takatsu, Kawasaki 213-0012, Japan.
Mawatari
Kazuma
K
Takahashi
Hiroko
H
Tanaka
Yo
Y
Nakanishi
Hiroaki
H
Kitamori
Takehiko
T