ERIC Number: ED201351
Record Type: RIE
Publication Date: 1981-Mar
Reference Count: 0
The Use of a Microprocessor-Controlled, Video Output Atomic Absorption Spectrometer as an Educational Tool in a Two-Year Technical Curriculum.
Kerfoot, Henry B.
Based on instructional experiences at Charles County Community College, Maryland, this report examines the pedagogical advantage of teaching atomic absorption (AA) spectroscopy with an AA spectrophotometer that is equipped with a microprocessor and video output mechanism. The report first discusses the growing importance of AA spectroscopy in environmental and technical fields and examines the need to incorporate both theory and hands-on experience in teaching the use of a spectrophotometer. Next, the report considers the usefulness of the Instrumentation Laboratories Model 551 microprocessor-controlled spectrophotometer with video output in training students to set up the instrument; run calibration standards to generate a calibration curve; and calculate a sample measurement. This discussion emphasizes that the immediate feedback provided by the microprocessor spares the student the necessity of performing time-consuming, obfuscating tasks, such as "fiddling with" dials, and allows him/her to concentrate on AA theory. The remainder of the report examines the educational value of a spectrophotometer video output component in: videotaping experiment procedures; videotaping various expository demonstrations, so that students can observe the effects of, for example, aspiration rate or flame stoichiometry; videotaping instrument output related to flameless techniques; and aiding the instructor in preparing materials for students prior to performing an AA experiment. (JP)
Publication Type: Reports - Descriptive; Speeches/Meeting Papers
Education Level: N/A
Authoring Institution: Charles County Community Coll., La Plata, MD.
Note: Paper presented at the Annual Two-Year College Chemistry Conference (70th, Atlanta, GA, March 27-28, 1981).