DIN EN 14907:2005
环境空气质量.悬浮颗粒物质的PM2.5质量部分的测定用标准重量分析测量方法
Ambient air quality - Standard gravimetric measurement method for the determination of the PM2,5 mass fraction of suspended particulate matter; English version of DIN EN 14907
DIN EN 14907:2005 发布历史
DIN EN 14907:2005由德国标准化学会 DE-DIN 发布于 2005-11。
DIN EN 14907:2005 在中国标准分类中归属于: Z15 大气环境有毒害物质分析方法，在国际标准分类中归属于: 13.040.20 环境空气。
DIN EN 14907:2005的历代版本如下：
- 2014年 DIN EN 12341:2014 环境空气. 悬浮颗粒物PM10和PM2.5质量浓度测定的标准重量测量法; 德文版本EN 12341-2014
- 2005年 DIN EN 14907:2005 环境空气质量.悬浮颗粒物质的PM2.5质量部分的测定用标准重量分析测量方法
- 1970年 DIN EN 14907 E:2004-04 DIN EN 14907 E:2004-04
This European Standard describes a standard method for determining the PM215 mass concentration of suspended particulate matter in ambient air by sampling the particulate matter on filters and weighing them by means of a balance. Measurements are made over a sampling period of about 24 h, and in line with the Directive. are expressed as pg/m3, where the volume of air is the volume at ambient conditions near the inlet at the time of sampling. The range of application of the standard is from 1 pg/m3 (i.e. the limit of detection of the standard measurement method expressed as its uncertainty) up to 120 pg/m3 (i.e. the maximum concentration level observed during the field study undertaken by CEN/TC 264/WG 15 to validate the standard). NOTE Although the standard is not validated for concentrations over 120 pg/m3 its ranae of application could well be extended to commonly encountered ambient concentrations up to circa 200 pg/m3 when using glass or quartz fibre filters. At these high concentrations and particulate mass loadings no filter clogging is to be expected. Also the flow rate can be easily maintained at the nominal setting. The equivalence procedure in Annex A specifies two approaches, depending on whether the candidate method differs slightly or fundamentally from the standard method. In the former case, involving only slight differences from the standard method ("variations on a theme") Annex A provides a restricted procedure to compare only the pertinent differences, instead of a full field test. This Q part of the annex serves to give practical guidance for determining equivalence for measurement methods commonly used in monitoring networks, and includes examples of common variations to the standard method, such as different filter storing or conditioning procedures and the variation of the standard method for the application as automated filter changer. In the latter case, involving a full set of field tests, the procedure serves to determine equivalence only within the range of conditions under which the field tests are carried out. The equivalence can be shown to hold for conditions prevailing within European countries by carrying out the field test in situations covering a suitable range of relevant ambient parameters (such as concentration and composition of the suspended particulate matter, temperature, and humidity). Although this European Standard does not explicitly address automatic monitoring methods for the measurement of the PM2.5 mass fraction in ambient air, the equivalence test procedure in Annex A applies both to non-automatic and automatic methods.
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