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Development of a new radial passive sampling device for atmospheric NOx determination
Talanta ( IF 5.6 ) Pub Date : 2018-08-01 , DOI: 10.1016/j.talanta.2018.07.088
Oriana Motta , Raffaele Cucciniello , Rosa La Femina , Concetta Pironti , Antonio Proto

In this paper we used Na2CO3-impregnated silica as reactive substrate for the determination of atmospheric NOx (NO+NO2) by using a passive sampling device, with radial symmetry, which is unprecedented. We conducted laboratory and field tests at an urban setting, with co-located passive samplers and continuous measurements of NOx by a chemiluminescence detector, used as reference. The performance of the carbonate-based sorbent for the NOx sampler was evaluated in two different time frames (autumn 2016 and winter 2017), characterised by different environmental conditions. The comparison of the NOx concentration levels measured by passive sampling, using Na2CO3 as NOx sorbent, showed a close relationship with those obtained by the chemiluminescence analyzer. Validation experiments in the laboratory and in the field are reported together with the calculation of the diffusion-sampling rate of the samplers.



中文翻译:

大气NO一个新的径向被动取样装置的研制X判定

在本文中,我们使用Na 2 CO 3浸渍的二氧化硅作为反应性底物,采用径向对称的无源采样装置测定大气中的NO x(NO + NO 2),这是前所未有的。我们在城市环境中进行的实验室和现场试验,用共同定位被动采样和NO的连续测量X通过化学发光检测器,作为参考。在两个不同的时间范围(2016年秋季和2017年冬季)中,以不同的环境条件为特征,评估了基于碳酸盐的吸附剂对NO x采样器的性能。的NO的比较X使用Na通过被动采样测得的浓度水平,2 CO 3作为NO X吸附剂,显示出与由所述化学发光分析仪获得的那些密切的关系。报告了实验室和现场的验证实验以及采样器扩散采样率的计算。

更新日期:2018-08-01
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