Measurement Of The Surface Water Reaeration Coefficient Using Kr As A Gas Tracer
Author(s)
J.L. Murphy, P.A. Mackinnon, Y.Q. Zhao, R.M. Kalin & T. Elliot
Abstract
Measurement of the surface water reaeration
coefficient using Kr as a gas tracer
J.L. Murphy, P.A. Mackinnon, Y.Q. Zhao, R.M. Kalin & T. Elliot
School of Civil Engineering, The Queen's University of Belfast, Northern
Ireland.
Abstract
Details are presented of a system devised to use Krypton (Kr) to quantify the
reaeration coefficient in surface waters. The technique is based upon similarities
in the gas transport mechanisms of dissolved Kr and oxygen (62) in water, and
relies on the low natural abundance of Kr in the atmosphere and consequently in
surface waters.
The experimental protocols used in laboratory tests and preliminary field
trials are given. Kr was released into the water bodies, either by introduction of
"kryptonated" water (in the laboratory) or by using a fine-pore diffuser (in field
tests). In each case, a quantity of the fluorescent dye tracer, Rhodamine WT,
was released simultaneously - the latter to identify the progress of the
kryptonated water and to act
Keywords
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