faculty publications and conference presentations

Permanent link for this collectionhttps://hdl.handle.net/2022/28653

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    Electroanalytical Performance of a Bismuth/Antimony Composite Glassy Carbon Electrode in Detecting Lead and Cadmium
    (Wiley-VCH Verlag, 2023-03-08) Muna, Grace W.,; Barerra, Emily; Robinson, Lucas
    This work reports on the electroanalytical performance of a glassy carbon electrode (GCE) modified with antimony and bismuth (Sb/Bi-GCE) in detecting heavy metal ions using lead and cadmium as model analytes. The electroanalytical performance of the Sb/Bi-GCE surface was compared to the bismuth modified glassy carbon electrode (Bi-GCE) as well as the antimony modified glassy carbon electrode (Sb-GCE). The Sb/Bi-GCE exhibited excellent figures of merit compared to Bi-GCE and Sb-GCE surfaces. For example, the limit of detection for lead was 0.01 ppb using Sb/Bi-GCE and 0.1 and 1 ppb on Bi-GCE and Sb-GCE, respectively. Keywords: Bismuth, antimony, differential pulse anodic stripping voltammetry, scanning electron microscopy, electrodeposition
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    Stimulating Students’ Learning in Analytical Chemistry through an Environmental-Based CURE Project
    (American Chemical Society, 2021-03) Muna, Grace
    This article reports on the implementation of a CURE project in upper-level analytical chemistry course to engage a larger number of students in research at a primarily undergraduate institution (PUI). The lab course syllabus was modified to provide students with an opportunity to experience the process of conducting research through a project that was relevant to them personally and the community at large. Students carried out research using microwave plasma atomic emission spectroscopy (MPAES) to correlate lead levels in soil with home location, source, and age. Students’ self-assessment and surveys suggest that implementing a research project that students can relate to, leads to an increased level of mastering analytical skills and demonstration of a higher level of critical-thinking skills. Participation in the CURE project increased a desire and a commitment to engage in independent research and in communicating science through presentations. KEYWORDS: Upper-level undergraduate, analytical chemistry, environmental, undergraduate