Environmental Engineering Department, Faculty of Engineering & Architecture, Anadolu University, İki Eylül Campus, 26555 Eskişehir, Turkey.
Environ Sci Pollut Res Int. 2012 Sep;19(8):3200-9. doi: 10.1007/s11356-012-0825-0. Epub 2012 Mar 6.
This study presents the performance evaluation of a tailor-made passive sampler developed for the monitoring of tropospheric ozone.
The performance of the passive sampler was tested in the field conditions in terms of accuracy, precision, blank values, detection limit, effects of some parameters such as sampling site characteristics and sampling period on the field blanks, self-consistency, experimental and theoretical uptake rates, shelf life and comparison with commercial passive samplers.
There was an agreement (R (2) = 0.84) between the responses of passive sampler and the continuous automatic analyser. The accuracy of the sampler, expressed as percent relative error, was obtained lower than 15%. Method precision in terms of coefficient of variance for three simultaneously applied passive samplers was 12%. Sampler detection limit was 2.42 μg m(-3) for an exposure period of 1 week, and the sampler can be stored safely for a period of up to 8 weeks before exposure. Satisfactory self-consistency results showed that extended periods gave the same integrated response as a series of short-term samplers run side by side. The uptake rate of ozone was found to be 10.21 mL min(-1) in a very good agreement with the theoretical uptake rate (10.32 mL min(-1)). The results of the comparison study conducted against a commercially available diffusion tube (Gradko diffusion tube) showed a good linear relationship (R (2) = 0.93) between two passive samplers.
The sampler seems suitable to be used in large-scale measurements of ozone where no data are available or the number of existing automated monitors is not sufficient.
本研究介绍了一种为监测对流层臭氧而开发的定制型无源采样器的性能评估。
从准确度、精密度、空白值、检出限、采样点特征和采样周期等参数对现场空白的影响、自一致性、实验和理论吸收速率、保质期以及与商业无源采样器的比较等方面，对无源采样器的性能在现场条件下进行了测试。
无源采样器和连续自动分析仪的响应之间存在良好的一致性（R（2）= 0.84）。采样器的准确度（以相对百分比误差表示）低于 15%。同时应用三个无源采样器的方法精密度（变异系数）为 12%。采样器的检出限为 1 周暴露期内 2.42 μg m(-3)，在暴露前可安全储存长达 8 周。令人满意的自一致性结果表明，延长采样期可获得与一系列并排运行的短期采样器相同的积分响应。臭氧的吸收速率为 10.21 mL min(-1)，与理论吸收速率（10.32 mL min(-1)）非常吻合。与商业可用扩散管（Gradko 扩散管）进行的对比研究结果表明，两种无源采样器之间存在良好的线性关系（R（2）= 0.93）。
该采样器似乎适合于在缺乏数据或现有自动监测器数量不足的情况下进行大规模臭氧测量。
