Patent ID: 7244395
Filing Date: 2007-07-17
Classification: G01N,Y10T

Abstract:
1. An apparatus for performing low level sulfur UV fluorescence detection comprising: an oxidation or combustion chamber including: where the oxidation chamber is adapted to convert substantially all oxidizable components of a sample into their corresponding oxides; a transfer tube connected to the oxidized sample outlet adapted to transfer the corresponding oxides to an UV chamber; an UV interference reduction system adapted to introduce an UV interference reduction agent into the sample before during and/or after oxidation, where the UV interference reduction agent is capable of reducing or eliminating nitrogen oxides that interfere with sulfur UV fluorescence detection; and a detector/analyzer system including: where the UV interference reduction agent is introduced in an amount sufficient to convert interfering nitrogen oxides into non-interfering nitrogen oxides thereby lowering a sulfur detection limit to sulfur concentrations of less than 100 ppb.