G - Physics – 01 – N
Patent
G - Physics
01
N
150/20
G01N 27/416 (2006.01)
Patent
CA 1204989
Abstract of the Disclosure A method for measuring fluoride concentrations in a gas wherein a sample of the gas is mixed with an internal reference solution in a gas scrubber to form a fluoride-containing solution. The fluoride-containing solution is collected, and the concentration of fluoride ion is determined in a potentiometric apparatus. The apparatus includes a first electrode having a fluoride-sensitive element and a second electrode having an element sensitive to a halide ion other than fluoride ion. The improved method of the invention compensates for errors caused by evaporation of water from the gas scrubber.
436724
Aluminum Company Of America
Smart & Biggar
LandOfFree
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