P869: Experimenting with student-made microfluidic devices in Advanced Analytical Chemistry

Author: Z. Vivian Feng, Augsburg College, USA

Co-Author:

Date: 8/6/14

Time: 2:45 PM3:05 PM

Room: MAN 107

Related Symposium: S60

Microfluidic devices has been broadly used in research and commercial applications in biological and pharmaceutical fields. Yet few existing curricula introduces students to this exciting new field. The engineering aspects of device design and fabrication make it especially suitable to incorporate this topic in instrumental analysis-type course and lab. We have developed and implemented a capstone project in our Advanced Analytical Chemistry for students to design and fabricate PDMS-based microfluidic devices for electrophoresis and organic synthesis without cleanroom facilities. Examples of the applications that students have explored include dye separation and azo dye synthesis. Students learn about laminar flow patterns and chip design, and experiment with the various aspects of device production. The open-endedness of the project allows student to learn from their failures to improve their devices. The success and existing challenges will also be presented.

P352: Instrumental analysis of biodiesel content in commercial diesel blends: An experiment for undergraduate analytical chemistry

Author: Z. Vivian Feng, Augsburg College, USA

Co-Author:

Date: 8/4/14

Time: 2:25 PM2:45 PM

Room: MAK B1120

Related Symposium: S34

The potential of replacing petroleum fuels with renewable biofuels has drawn significant public interest. Many states have imposed biodiesel mandates or incentives to use commercial biodiesel blends. We present an inquiry-driven experiment where students are given the tasks to gather samples, develop analytical methods using various instrumental methods, such as HPLC, 1H-NMR, and ATR-FTIR, make measurements, and analyze the results to determine the volume percent of biodiesel in commercial diesel blends. The project develops students’ appreciation by working with “real” samples from their daily lives, and to critically compare and contrast the strengths and weaknesses of various instrumental techniques for quantitative analysis.