Abstract
Two methods for the simultaneous determination of zinc and copper and of calcium and magnesium, based on the use of flow-rate gradients and spectrophotometric detection in unsegmented systems, are reported. The underlying chemistries of the determinations are a ligand-exchange reaction and a pH change, respectively, in completely continuous and flow-injection manifolds. By automatically changing the ligand concentration or pH, one can ascertain the contribution of each ion to the recorded signal. The performance of the two proposed methods was tested on both synthetic and real samples, involving the simultaneous determination of zinc and copper and of calcium and magnesium. Relative standard deviations between 1.5 and 5%, were found for the precision of the proposed methods.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
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.