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首页> 外文期刊>Atmospheric environment >The implications of tapered element oscillating microbalance (TEOM) software configuration on particulate matter measurements in the UK and Europe
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The implications of tapered element oscillating microbalance (TEOM) software configuration on particulate matter measurements in the UK and Europe

机译：锥形元素振荡微量天平（TEOM）软件配置对英国和欧洲的颗粒物测量的影响

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摘要

The tapered element oscillating microbalance (TEOM) is used to measure ambient particulate matter concentrations worldwide. The instrument is configured with a correction factor required by the US Environmental Protection Agency (EPA) to account for the difference between the TEOM and the gravimetric method. However, numerous studies have shown that this factor does not fully account for these differences, consequently, the European Commission (EC) insists on an independent assessment of the differences. The US EPA correction was found to contribute between 3 and 5 mu g m(-3) to the daily mean PM10 and PM2.5 concentrations at Marylebone Road, London, between I January 2001 and 31 December 2004. The TEOM is also configured to express measurements to a standard temperature (25 degrees C) and a standard pressure (1 atm). This differs from the US EPA requirement of ambient reporting conditions for both PM10 and PM2.5. It also differs from the European position, which also requires reporting at ambient conditions. When compared to ambient reporting conditions, the TEOM standard temperature and pressure correction was found to contribute between -1 and 7 mu g m(-3) to the daily mean PM10 and PM2.5 concentrations, and 2 mu g m(-3) to the annual mean concentrations. The standard temperature and pressure correction was also demonstrated to vary the annual mean concentration measured using the TEOM by 2-8% between European capital cities, with higher values in colder northern cities. The standard temperature and pressure correction to individual daily mean concentrations was shown to be up to 20%. It is recommended that the US EPA correction factor is removed from TEOM measurements and that all measurements are reported at ambient temperature and pressure. (c) 2006 Elsevier Ltd. All rights reserved.
机译：锥形振荡微天平（TEOM）用于测量世界范围内的环境颗粒物浓度。该仪器配置有美国环境保护署（EPA）要求的校正因子，以解决TEOM和重量分析法之间的差异。但是，大量研究表明，该因素不能完全解决这些差异，因此，欧洲委员会（EC）坚持要求对差异进行独立评估。发现在2001年1月1日至2004年12月31日期间，伦敦马里波恩路的US EPA校正值对PM10和PM2.5的日平均浓度贡献了3至5μgm（-3）。TEOM还配置为表达测量到标准温度（25摄氏度）和标准压力（1个大气压）。这不同于美国EPA对PM10和PM2.5的环境报告条件的要求。它也不同于欧洲的立场，后者也要求在环境条件下进行报告。与环境报告条件相比，TEOM标准温度和压力修正值对每日平均PM10和PM2.5浓度的贡献介于-1和7μgm（-3）之间，对每日平均PM10和PM2.5的贡献为2μgm（-3）。年平均浓度。还证明了标准的温度和压力校正可以使欧洲首都城市之间使用TEOM测量的年平均浓度变化2-8％，而在较冷的北部城市中则较高。对单个日平均浓度的标准温度和压力校正显示高达20％。建议从TEOM测量中删除US EPA校正因子，并在环境温度和压力下报告所有测量结果。 （c）2006 Elsevier Ltd.保留所有权利。

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