Hasannezhad Estiri Elahe, Rahmani Sani Abolfazl, Dowlatabadi Afshin, Hasannezhad Estiri Reza, Miri Mohammad
Student Research Committee, Department of Environmental Health, School of Public Health, Sabzevar University of Medical Sciences, Sabzevar, Iran.
Non-Communicable Diseases Research Center, Department of Environmental Health Engineering, School of Public Health, Sabzevar University of Medical Sciences, Sabzevar, Iran.
MethodsX. 2023 Aug 23;11:102334. doi: 10.1016/j.mex.2023.102334. eCollection 2023 Dec.
Nitrogen dioxide (NO) is one of the main indicators of traffic-related air pollution in urban areas. Active sampling methods (common methods) are expensive and need advanced devices. While Passive sampling is a simple and low-cost method for measuring air pollutants, including NO. Therefore in this study, we developed a passive sampler to measure ambient NO and validation its performance by comparing it with active sampling methods. Ambient NO was measured for 24 h by both active and passive sampling methods in the same locations (2 m height above grand level and 15 m distance from air pollution sources). Sampling of NO was repeated for 18 days to compare ambient NO concentrations measured by active and passive methods and validation our developed passive samplers. •To develop passive samplers we used three stainless steel filters impregnated with a combination of triethanolamine and acetone (25:25 mL) in each tube.•Active NO sampling was conducted using the modified Satlzman method (standard method).•There was a strong correlation between NO concentration obtained from active and passive sampling methods (r = 0.84).
二氧化氮（NO）是城市地区与交通相关的空气污染的主要指标之一。主动采样方法（常用方法）成本高昂且需要先进设备。而被动采样是一种用于测量包括NO在内的空气污染物的简单且低成本的方法。因此，在本研究中，我们开发了一种被动采样器来测量环境中的NO，并通过与主动采样方法进行比较来验证其性能。在相同位置（地面上方2米高度且距离空气污染源15米处），采用主动和被动采样方法对环境中的NO进行了24小时测量。对NO的采样重复进行了18天，以比较主动和被动方法测得的环境NO浓度，并验证我们开发的被动采样器。•为了开发被动采样器，我们在每个管中使用了三个浸渍有三乙醇胺和丙酮（25:25毫升）混合物的不锈钢过滤器。•采用改良的萨茨曼法（标准方法）进行主动NO采样。•主动和被动采样方法获得的NO浓度之间存在很强的相关性（r = 0.84）。
