Simultaneous determination of copper(II) and zinc(II) via simple acid-base titrimetry using glass pH electrode

The combination of potentiometric methods with multivariate calibration techniques allows complex mixtures to be analyzed. In this study, a new method was developed and reported for simultaneous determination of copper(II) and zinc(II) cations in a mixture by titrimetric methods. The developed method permits simultaneous cation analysis with low detection limits, just by using a pH electrode. This work has achieved the challenging goal of developing a cost-effective and applicable method that can be applied in most laboratories due to independence of any chemical instruments. Partial least squares 1, one of the multivariate calibration techniques, was used in the analysis of titrimetric data. Copper(II) and zinc(II) were simultaneously determined with approximately 5 ppm detection limits and the developed method was validated by performing the titration with known sample mixtures and a certificated alloy sample

Crystal Structure Of Dinicotinato-Tetraaqua-Copper(Ii)

WoSScopu

Crystal Structure Of The N-(2-Salicylidene-Ethyl)-Ethanolaminato-Dichloro-Iron(Iii) Complex

WoSScopu

Multivariate Analysis for Carbon Nanotube Production by Floating Catalyst Method

The floating catalyst method for carbon nanotube production seems promising for scaling up since it enables continuous feeding of the catalyst to the reactor together with the carbon source. However, there are many experimental factors affecting the amount of nanotubes produced. Multivariate experimental design technique was utilized to determine the relative significance of selected factors at different levels. Temperature seems to be highly important for the amount of nanotubes formed, and catalyst content of the feed solution should be kept in a narrow range to increase the yield. Carrier gas flow rate should not be more than a certain level and hydrogen content of the feed should be at least 10%. Thiophene, on the other hand, seems to have little effect on yield thus may not be included in the feed solution