Zhang Q L, Chen R J, Kan H D
Department of Environmental Health, School of Public Health, Fudan University, Shanghai 200032, China.
Zhonghua Yu Fang Yi Xue Za Zhi. 2023 Nov 6;57(11):1766-1769. doi: 10.3760/cma.j.cn112150-20230612-00459.
Nitrogen dioxide (NO) is an important indoor air pollutant, with both outdoor and indoor sources contributing to indoor NO exposure levels. Considering the association of high NO exposure with adverse health effects, the Standards for indoor air quality (GB/T 18883-2022) have been revised to further restrict indoor NO limit values. The 1-h average concentration limit value for NO has been reduced from 0.24 mg/m to 200 μg/m.This study analyzed the technical contents related to the determination of the limits of indoor NO in Standards for Indoor Air Quality (GB/T 18883-2022), including source, exposure level, health effects, and the process and evidence basis for determining the limit value. It also proposed prospects for the direction for the implementation of the indoor NO standard.
二氧化氮（NO）是一种重要的室内空气污染物，室外和室内来源都会导致室内二氧化氮暴露水平。鉴于高二氧化氮暴露与不良健康影响之间的关联，《室内空气质量标准》（GB/T 18883-2022）已修订，以进一步限制室内二氧化氮限值。二氧化氮的1小时平均浓度限值已从0.24毫克/立方米降至200微克/立方米。本研究分析了《室内空气质量标准》（GB/T 18883-2022）中与室内二氧化氮限值测定相关的技术内容，包括来源、暴露水平、健康影响以及确定限值的过程和证据依据。还对室内二氧化氮标准的实施方向提出了展望。
