Premium
Oxygen Transfer Through Flexible Tubing and Its Effects on Ground Water Sampling Results
Author(s) -
Holm Thomas R.,
George Gregory K.,
Barcelona Michael J.
Publication year - 1988
Publication title -
groundwater monitoring and remediation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 47
eISSN - 1745-6592
pISSN - 1069-3629
DOI - 10.1111/j.1745-6592.1988.tb01089.x
Subject(s) - oxygen , anoxic waters , diffusion , carbon dioxide , volumetric flow rate , limiting oxygen concentration , ethylene , sampling (signal processing) , gaseous diffusion , materials science , environmental science , chemistry , mechanics , thermodynamics , environmental chemistry , organic chemistry , engineering , electrical engineering , catalysis , physics , filter (signal processing) , electrode
A model for the diffusion of gases through polymeric tubing was derived which predicts that the amount of gas transferred is proportional to the tubing length and inversely proportional to the pumping rate. The model was experimentally tested and confirmed for oxygen transfer through fluorinated ethylene‐propylene copolymer (FEP) tubing using tubing lengths and flow rates typical of ground water sampling. Diffusion can introduce measurable concentrations of oxygen into initially anoxic water. Diffusive loss of carbon dioxide from water that is oversaturated with respect to atmospheric CO 2 does not measurably affect pH under similar usage conditions.