The Chemical EducatorISSN: 1430-4171 (electronic version) Abstract Volume 5
Issue 3 (2000) pp 136-139 GC-MS Determination of an Unknown Pesticide. II. An Experiment Investigating Quality of Analysis Using Random Sampling and Estimation of VarianceGrant N. Holder,* Steven J. Breiner, Laurel L. McClure A. R. Smith Department of Chemistry, Appalachian State University, Boone, NC 28608 Published online: 1 June 2000 Abstract. Newly devised components are described which significantly enhance both the scientific and pedagogical components of a previously published, qualitatively oriented experiment for students in an undergraduate instrumental analysis course. To provide a laboratory exercise containing as much real-world experience as possible, the earlier experiment was modified in such a way as to allow its use as a quantitative experiment illustrating such principles as sampling, experimental design, analysis of variance, and the use of internal standards.
Key Words: Laboratories and Demonstrations; quantitative analysis (*) Corresponding author. (E-mail: holdergn@appstate.edu) Article in PDF format (142 KB) HTML format Issue date: June
1, 2000 |