In-house validation of a new method for determining high concentrations of NO2 in the exhaust gases associated stationary sources according to Order 462/1993

Abstract

It was developed a method of analysis for determining NO2 performance of residual gaseous effluents. Complex validation methodology "in-house" meet current standards applied by confirming identification and selectivity / specificity, fix the limit of detection, limit of quantification of the working range, linearity, robustness and recovery. It is applicable to the determination of concentrations of NO2 related residual gaseous effluents into the atmosphere stationary source emission values for NO2 concentration exceeding 50 mg / ml. Nitrogen oxides except nitrous oxide (N2O), are oxidized to nitrate and measured by UV absorbance molecular. The requirements SR EN ISO / IEC 17025: 2005 on summer use testing methods developed in its own laboratories, but only after validation. It was performed calculating the uncertainty of measurement method for determining nitrogen dioxide and was drafted by the validated protocol documentation.