Bubble Stripping To Determine Hydrogen Concentrations in Ground Water: A Practical Application of Henry's Law

Don Kampbell
U.S. EPA, Office of Research and Development, National Risk Management Laboratory, Subsurface Protection and Remediation Division, Ada, OK 74820
Daniel M. McInnes
Department of Chemistry, East Central University, Ada, OK 74820
J. Chem. Educ., 2003, 80 (5), p 516
DOI: 10.1021/ed080p516
Publication Date (Web): May 1, 2003

Abstract

Henry's law states that at constant temperature, the solubility of a gas in a liquid is directly proportional to the pressure of the gas above the liquid. The Bubble Stripping Method involves applying Henry's law to determine the concentration of dissolved hydrogen, H2, in ground water. This paper describes the method’s role in achieving restoration of sites that are polluted with chlorinated solvents. Theory and sample calculations are presented, which may be of use to general chemistry lecturers who want to illustrate how a basic chemical principle can find application in the increasingly important field of environmental science.

Keywords (Audience):

High School / Introductory Chemistry

Keywords (Domain):

Environmental Chemistry

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Water / Water Chemistry
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History

  • Received: August 03, 2009

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