Analytical method and apparatus
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United States of America Patent
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Aug 20, 2013
Grant Date -
Feb 17, 2011
app pub date -
Dec 18, 2008
filing date -
Dec 20, 2007
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Abstract
A method for determining the amount of a chemical species in a sample, in particular the amount of weak acid dissociable cyanide or total cyanide in a sample, and an apparatus for performing said method. The method comprises the steps of: i) treating the sample to liberate the chemical species into a gaseous stream; ii) directing the gaseous stream to a scrubber; iii) absorbing the chemical species into a scrubber solution; and iv) determining the amount of chemical species absorbed into the scrubber solution, wherein any remaining chemical species not absorbed into the scrubber solution is directed or recirculated to the scrubber in the gaseous stream and step iii) is repeated to increase absorption of the chemical species prior to performing step iv).
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