Abstract
A liquid-membrane type nitrate-selective electrode was constructed, in which the responding membrane contained polyvinylchloride, o-nitrophenyloctylether and tetraheptylammonium nitrate. The NO3--selective electrode displayed a linear response to the concentration of NO3- with a Nernstian slope of -53.3 ± 1.0 mV decade-1, in the 10-5 - 10-1 mol dm-3 (M) NO3- concentration range. The NO3- detection limit was about 10-6 M. The electrochemical response of this electrode was stable for more than 30 days. Measurements performed using the NO3--sensor indicated that in the presence of green plants, the concentration of NO3- in a hydroponic solution decreased from 0.20 to 0.05 mM over a three-day period.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
