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Reducing Interference Effects in the Chemiluminescent Measurement of Nitric Oxides from Combustion Systems
Journal article

Reducing Interference Effects in the Chemiluminescent Measurement of Nitric Oxides from Combustion Systems

Robert J. Tidona, Ahtisham A. Nizami, Nicholas P. Cernansky and Drexel Univ., Philadelphia, PA (USA)
JAPCA, v 38(6), pp 806-811
01 Jun 1988
PMID: 3210058

Abstract

Experiments were carried out to determine the relative chemiluminescence quenching efficiencies as a function of third body concentration for each of the common combustion products, H 2 O, CO 2 , CO, H 2 , O 2 and Ar. These results are compared with those of other investigators. The effect of reaction chamber pressure on analyzer response and the development of an analyzer design which incorporates an adjustable sample capillary inlet capable of maintaining a constant molar flow rate of sample gas to the reaction chamber are discussed. The effect of carbon monoxide interference on chemiluminescent NO x measurement has been isolated and found to be significant. A means of correcting NO, measurements for these CO interference effects is described. Quantification of NO and NO 2 absorption in liquid water in NO x sampling systems has been made. Recommendations for sample system designs to handle the presence of water in the sample gas are made.

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Web of Science research areas
Engineering, Environmental
Environmental Sciences
Meteorology & Atmospheric Sciences
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