固定源排气中氮氧化物的测定

The Measurement of the Nitrogen Oxides Inside the Gas Emitted from Stationary Sources

由于没有单独测定二氧化氮的方法标准、二氧化氮标准气体和测定二氧化氮便携式(电化学传感器)仪器标准,目前不能利用标准气体评价二氧化氮便携式(电化学传感器)仪器的性能;但是,可采用将NO2还原成NO后用化学发光法、非分散红外线法或电化学传感器法测定氮氧化物。

Because of the following reasons： （1） no such a method or standard that is particularly used to test nitrogen dioxide; （2） no standard gas of nitrogen dioxide ; （3） no standard to test the performance of portable nitrogen dioxide testing instruments （electrochemical sensors）; （4） not able to use the standard gas to evaluate the performance of portable nitrogen dioxide testing instruments （electrochemical sensers）; However, it is recommended that first use the method of reducing NO2 to NO, then use the chemiluminescence method, the non-dispersive infrared ray method or electrochemical transducer method to test nitrogen oxides.