A young, inexperienced Food and Drug Administration (FDA) chemist is asked to distinguish between authentic fresh orange juice and suspected reconstituted orange juice falsely labeled as fresh. In an advanced instrumental analytical chemistry application of this case, inductively coupled plasma (ICP) spectroscopy is used to distinguish between the…

The study describes the development and advantages of various correlation techniques that are used for data extraction and are integral to all modern instrumentation. The "Audibilization" of the electronic signals in such cases is found to be very essential for the technique.

Describes an exercise designed to allow for student introductions at the beginning of a new semester while simultaneously revealing ways in which research questions can be constructed to collect data. (WRM)

Described is an experiment in which the student can ascertain the meaning of a negative result from a qualitative test by performing a more sensitive quantitative test on the same sample. Methodology for testing urinary glucose with a spectrophotometer at 630 nm and with commercial assaying glucose strips is presented. (MVL)

Investigates students' conceptions on reliability and the ways of dealing with different sets of experimental data. Tests students' understanding of how to handle experimental data from three aspects; doing replicates, handling data, and judging the quality of data with respect to spread. Includes 12 references. (YDS)

The methodology of compiling an academic genealogy using the Internet and computer technology is described. Details on the use of the Internet both to gather information and to make the results available are provided.