NotesFAQContact Us
Search Tips
Peer reviewed Peer reviewed
PDF on ERIC Download full text
ERIC Number: EJ1164761
Record Type: Journal
Publication Date: 2009-May
Pages: 8
Abstractor: As Provided
ISSN: ISSN-1089-9995
Environmental Media Phase-Tracking Units in the Classroom
Langseth, David E.
Journal of Geoscience Education, v57 n3 p206-213 May 2009
When teaching phase partitioning concepts for solutes in porous media, and other multi-phase environmental systems, explicitly tracking the environmental media phase with which a substance of interest (S0I) is associated can enhance the students' understanding of the fundamental concepts and derivations. It is common to explicitly track the customary mass, length, and time based units. The expansion described here is to also track the specific media phases to which these fundamental units apply. This additional step forces students to think more carefully about concentrations and other terms. This paper presents a consistent system of notation for teaching these concepts and some examples of how this svstem is used. The examples presented here are based on solid-liquid partitioning and a linear Freundlich adsorption isotherm, but could also be applied to other environmental media, such as air and biological tissue, as well as other partitioning models. This approach is most appropriate for advanced undergraduate and graduate students.
National Association of Geoscience Teachers. Carleton College W-SERC, One North College Street, Northfield, MN 55057. Tel: 540-568-6675; Fax: 540-568-8058; e-mail:; Website:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A