DETERMINATION OF NITROGEN OXIDE EMISSIONS FROM STATIONARY SOURCES

Applicability: This method is applicable for the measurement of nitrogen oxides (NOX) emitted from stationary sources.

Summary: A grab sample is collected in an evacuated flask containing a dilute sulfuric acid-hydrogen peroxide absorbing solution, and the nitrogen oxides, except nitrous oxide, are measured colorimetrically using the phenoldisulfonic acid (PDS) procedure.

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