Practical Use of Metal Oxide Semiconductor Gas Sensors for Measuring Nitrogen Dioxide and Ozone in Urban Environments.
Practical Use of Metal Oxide Semiconductor Gas Sensors for Measuring Nitrogen Dioxide and Ozone in Urban Environments.
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DOI：
10.3390/s17071653
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发表时间：
2017-07-19
期刊：
影响因子：
--
通讯作者：
Leigh RJ
中科院分区：
文献类型：
--
作者：
Peterson PJD;Aujla A;Grant KH;Brundle AG;Thompson MR;Vande Hey J;Leigh RJ
廉价的金属氧化物半导体（MOS）气体传感器用于城市空气质量监测的潜力在过去十年中一直是人们越来越感兴趣的话题。本文讨论了三年的经验，在一个新的仪器平台（小型开放式通用传感器（SOGS））在测量大气中的二氧化氮和臭氧浓度的传感器工作的一些教训。增加长期的测量精度的分析方法进行了讨论，允许二氧化氮测量与95%的置信区间为20.0和臭氧精度为26.8，在一个月的时间内远离校准的测量，平均超过18个月的这种校准。校准后超过四个月，传感器漂移变得明显，准确度显著降低。成功的校准方案进行了讨论，使用受控的人工大气补充部署在一个参考气象站暴露的元素。检查单个传感器属性的制造变化，由于仪器配备有相同类型的传感器对，因此可能进行实验。显示了各个传感器元件之间的良好重复性（优于0.7相关性）。将使用风扇推动空气通过内部传感器元件的传感器的结果与将传感器安装在外壳外部的结果进行比较，后一种设计将有效集成时间增加到一天以上。最后，提出了可能的途径，以提高可靠性，这种有前途的传感器技术测量污染的城市环境。
The potential of inexpensive Metal Oxide Semiconductor (MOS) gas sensors to be used for urban air quality monitoring has been the topic of increasing interest in the last decade. This paper discusses some of the lessons of three years of experience working with such sensors on a novel instrument platform (Small Open General purpose Sensor (SOGS)) in the measurement of atmospheric nitrogen dioxide and ozone concentrations. Analytic methods for increasing long-term accuracy of measurements are discussed, which permit nitrogen dioxide measurements with 95% confidence intervals of 20.0 and ozone precision of 26.8 , for measurements over a period one month away from calibration, averaged over 18 months of such calibrations. Beyond four months from calibration, sensor drift becomes significant, and accuracy is significantly reduced. Successful calibration schemes are discussed with the use of controlled artificial atmospheres complementing deployment on a reference weather station exposed to the elements. Manufacturing variation in the attributes of individual sensors are examined, an experiment possible due to the instrument being equipped with pairs of sensors of the same kind. Good repeatability (better than 0.7 correlation) between individual sensor elements is shown. The results from sensors that used fans to push air past an internal sensor element are compared with mounting the sensors on the outside of the enclosure, the latter design increasing effective integration time to more than a day. Finally, possible paths forward are suggested for improving the reliability of this promising sensor technology for measuring pollution in an urban environment.
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影响因子：
7.2
作者：
Boon-Brett, L.;Bousek, J.;Moretto, P.
通讯作者：
Moretto, P.
影响因子：
5
作者：
Mead, M. I.;Popoola, O. A. M.;Jones, R. L.
通讯作者：
Jones, R. L.
影响因子：
8.4
作者：
Elmi, I.;Zampolli, S.;Cardinali, G. C.
通讯作者：
Cardinali, G. C.
DOI：
10.1080/0002889768507522
发表时间：
1976-01-01
期刊：
AMERICAN INDUSTRIAL HYGIENE ASSOCIATION JOURNAL
影响因子：
--
作者：
PALMES, ED;GUNNISON, AF;TOMCZYK, C
通讯作者：
TOMCZYK, C
影响因子：
8.4
作者：
Meixner, H;Lampe, U
通讯作者：
Lampe, U