by Giorgio Volpi
Original Research
An activity for nicotine extraction and detection in tobacco. The procedure is based on the extraction of nicotine from tobacco, followed by the reaction between nicotine with Co(II) and Cu(II) ions. A qualitative experiment is proposed in order to demonstrate and visualize the presence of nicotine in tobacco and to demonstrate metal-nicotine complexes formation and their mass spectrometry (ESI) analysis.
World Journal of Chemical Education. 2016, 4(3), 67-72. DOI: 10.12691/wjce-4-3-4
Pub. Date: June 30, 2016
22478 Views5013 Downloads8 Likes
by A. Habekost
Original Research
Electrogenerated chemiluminescence (ECL) is an analytical process that is of fundamental interest for determining low concentrations of amino acids and related compounds (e.g., the broadband herbicide glyphosate). Nano zinc oxide or titanium (IV) oxide can enhance the analytical sensitivity by a factor of about 10.
World Journal of Chemical Education. 2016, 4(3), 64-66. DOI: 10.12691/wjce-4-3-3
Pub. Date: June 27, 2016
15385 Views4652 Downloads
by Jonathan Wong, Houguang Jeremy Chen, Ai-Hua Seow, Susanne D. Riegel and Sumod A. Pullarkat
Original Research
A newly-designed problem-based laboratory experiment utilizing a benchtop NMR spectrometer was implemented for undergraduate students. The aim of the experiment was to have a hands-on, problem-based approach that focused on structure elucidation as well as practical aspects such as sample preparation, data acquisition and manipulation. The experimental protocol also allowed the students to understand other aspects of NMR spectroscopy such as identification of impurities and its application in monitoring reaction progress. Results from a survey and a quiz conducted as part of the study clearly indicated that this hands-on approach not only helped to reinforce the theory learned in a lecture course, but also allow the students to realize the full potential of this important spectroscopic technique.avodart buy uk
go avodart buy uk
World Journal of Chemical Education. 2016, 4(3), 52-63. DOI: 10.12691/wjce-4-3-2
Pub. Date: June 24, 2016
15266 Views4069 Downloads
by Daniel D. Clark
Original Research
A convenient and inexpensive method for insulating fractional distillation columns in undergraduate laboratories with pre-slit, tubular pipe insulation that is widely available in hardware stores is described. This insulation can be quickly employed, can provide uniform insulation, and can be reused, which reduces the amount of trash generated from commonly used insulation.
World Journal of Chemical Education. 2016, 4(3), 49-51. DOI: 10.12691/wjce-4-3-1
Pub. Date: June 18, 2016
19578 Views5779 Downloads