Patent ID: 6444474
Filing Date: 2002-09-03
Classification: G01N,Y10T

Abstract:
A device for measurement of total organic carbon in a water sample which comprises a UV source, a microfluidic sample cell which is at least in part transparent to UV radiation and which has at least one sample channel for receiving the water sample, the sample cell comprising a photocatalyst in contact with the water sample and the sample cell being positioned with respect to the UV source such that at least a portion of a water sample in the sample channel can be irradiated by the UV source to oxidize organics in the water sample and generate CO2, a means for detecting the CO2 generated to determine the total organic carbon in the sample, and a counterelectrode in proximity to the photocatalyst layer so that a bias voltage can be applied to the photocatalyst layer wherein the photocatalyst is a thin-film or layer in the sample channel.