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ERIC Number: EJ941052
Record Type: Journal
Publication Date: 2011-Aug
Pages: 3
Abstractor: As Provided
Reference Count: 16
ISBN: N/A
ISSN: ISSN-0021-9584
GC-MS Quantitation and Identification of Bisphenol-A Isolated from Water
Mead, Ralph N.; Seaton, Pamela J.
Journal of Chemical Education, v88 n8 p1130-1132 Aug 2011
Isolation and identification of organic compounds is a necessary skill chemistry students must be able to do with proficiency. In this upper-level undergraduate laboratory, students isolate bisphenol-A (BPA; 4-4'-isopropylidenediphenol) from water using solid-phase extraction (SPE) followed by derivatization with analysis by GC-MS. The students learn the proper steps and techniques of SPE that include conditioning, equilibration, washing, and eluting. The students are then asked to identify the BPA peak from the GC-MS analysis of a mixture of standards based upon the molecular ion, keeping in mind the change in molecular weight upon derivatization. Interpretation of GC-MS data showed predictable fragmentation and highlights the formation of benzylic carbocations. Quantification was done by an external calibration curve and the sample was quantified and a percent recovery is calculated. (Contains 3 figures.)
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A