Abstract
AbstractA simple sequential injection method for the determination of ammonium with conductometric detection is described. The sample and alkaline solution are sequentially aspirated into a single tubular channel and mixed by flow reversal. The formed ammonia permeates through a gas permeable membrane and is collected on a static acceptor solution. The change in conductance of the acceptor solution is related to the concentration of ammonium ions in the sample. The use of flow reversal and influence of sample residence time on preconcentration are studied. The detection limit can be lowered from 1.5mg L−1 to 0.1 mg L−1 if preconcentration by successive sample flow reversal is used. The relative standard deviation is lower than 3%.
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 callDisclaimer: 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.
