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BEGIN:VCALENDAR VERSION:2.0 METHOD:PUBLISH CALSCALE:GREGORIAN PRODID:-//WordPress - MECv6.5.5//EN X-ORIGINAL-URL:https://oursymposium.sites.unlv.edu/ X-WR-CALNAME:Office of Undergraduate Research (OUR) Fall 2021 Virtual Undergraduate Research Symposium X-WR-CALDESC: REFRESH-INTERVAL;VALUE=DURATION:PT1H X-PUBLISHED-TTL:PT1H X-MS-OLK-FORCEINSPECTOROPEN:TRUE BEGIN:VEVENT CLASS:PUBLIC DTSTART;TZID=UTC:20211115T000000 DTEND;TZID=UTC:20211120T000000 DTSTAMP:20211110T000000 UID:MEC-4aa0e93b918848be0b7728b4b1568d8a@oursymposium.sites.unlv.edu CREATED:20211110 LAST-MODIFIED:20211111 PRIORITY:5 TRANSP:OPAQUE SUMMARY:HNSE-P3-2. Electrochemical Detection of Environmental Contaminants DESCRIPTION:\n\n\nKaren Gonzalez1\nVivian Flaum1\nDustyn Weber1\nFaculty Mentor: Cory A. Rusinek, Ph.D.1\n1College of Sciences, Department of Chemistry and Biochemistry\nABSTRACT\nDue to industrialization and globalization in the late centuries, environments have become increasingly compromised by pollutants. Heavy metals are a common environmental pollutant; they refer to a naturally occurring element having a high atomic weight and high density. Heavy metals, such as lead (Pb), tend to be toxic and present in trace amounts. Pb is a naturally occurring element that can affect virtually every function in the human body upon exposure, including severe damage to the kidneys and nervous system[2]. Interest in detecting lead (Pb2+) in water samples has risen in recent years due to several incidents of community-wide exposure around the world. Cloud point extraction (CPE) is a green chemistry technique used to extract and preconcentrate metals. Limited reports exist coupling CPE to anodic stripping voltammetry (ASV), an electrochemical method that can be used for trace detection of a variety of toxic metals. ASV is an inexpensive and easy to miniaturize technique that can achieve detection limits in the picomolar (10-10 M) range. In this work, Pb2+ was extracted by CPE and analyzed by ASV. The CPE matrix yielded a 38x increase in sensitivity over a traditional acetate buffer matrix with a 1-minute deposition time. The limit of detection (LOD) and quantification (LOQ) were 0.660 and 2.201 ppb, respectively, using CPE. Utilizing acetate buffer at pH 4.65, the LOD and LOQ were 3.202 and 10.670 ppb. Thus, the CPE yielded a 5x improvement in the LOD and LOQ. Overall, this method further exemplifies the wide applicability of electroanalytical methods.\nThis research was funded by UNLV’s Title III Part F Asian American and Native American Pacific Islander Serving Institution (AANAPISI) program, which is housed within UNLV’s Center for Academic Enrichment and Outreach and funded under grant (P382B160008) from the U.S. Department of Education. \n URL:https://oursymposium.sites.unlv.edu/program/electrochemical-detection-of-environmental-contaminants/ ORGANIZER;CN=The Office of Undergraduate Research:MAILTO:our@unlv.edu CATEGORIES:Health & Natural Sciences & Engineering END:VEVENT END:VCALENDAR