title: Development of a micro-potentiometric sensor for the microchip analysis of alkali ions.
abstract: 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.
authors.affiliation: Microchemistry Group, Kanagawa Academy of Science and Technology, 3-2-1 Sakado, Takatsu, Kawasaki 213-0012, Japan.
authors.forename: Adelina
authors.initials: A
authors.lastname: Smirnova
authors.forename: Kazuma
authors.initials: K
authors.lastname: Mawatari
authors.forename: Hiroko
authors.initials: H
authors.lastname: Takahashi
authors.forename: Yo
authors.initials: Y
authors.lastname: Tanaka
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Nakanishi
authors.forename: Takehiko
authors.initials: T
authors.lastname: Kitamori