1.范围1。1本标准适用于空气中一氧化氮（NO）和二氧化氮（NO2）的连续测量。1.2本标准规定了化学发光法，用于测量10？之间的一氧化氮和二氧化氮浓度？Gm-3和20毫克？25岁的m-3？C和101.3千帕。注:（1）本标准中提及的所有浓度均基于25°C的温度？C和101.3 kPa的大气压力，除非另有说明。（2） 描述了三种可能的校准程序；主要标准是氮中一氧化氮的标准混合物或标准二氧化氮渗透装置。

1. Scope1.1This Standard applies to the continuous measurement of nitric oxide (NO) and nitrogen dioxide (NO2) in air.1.2This Standard sets forth the chemiluminescence method for the measurement of the concentration of nitric oxide and nitrogen dioxide between 10?g?m-3 and 20 mg?m-3 at 25?C and 101.3 kPa.Notes: (1)All concentrations referred to throughout this Standard are based on a temperature of 25?C and an atmospheric pressure of 101.3 kPa unless otherwise stated.(2) Three possible calibration procedures are described; the primary standard being either a standard mixture of nitric oxide in nitrogen or a standard nitrogen dioxide permeation device.