The concentration of ozone has been in a rising crescendo in the last decade while the fine particles (PM2.5) is gradually decreasing but still at a high l
CAAA:CleanAirActAmendment 修正案要点CAAA1990KeyPoints 3 确立新的国家环境空气质量标准nationalambientairqualitystandards(NAAQS) 依法管理移动空气污染源regulatemobilesourcesofairpollution 限制有害空气污染物排放limittheemissionsofcertainpollutantsfromthesesources ...
Low-uptakePassive samplingPassive samplers have proven to be effective for continuous monitoring of volatile organic compounds (VOCs) in ambient air in remote, urban and industrial environments. Thermal desorption tubes fitted with endcaps that facilitate passive uptake through diffusion are now routinely...
Air quality applications of EVT include the exceedance of air quality standards (Surman et al., 1987; Hopke and Paatero, 1994), exposure to ambient air pollutants (Kassomenos et al., 2010), indoor concentrations of radon (Tuia and Kanevski, 2008), and VOC exposures in the NHANES mentioned...
The new ozone National Ambient Air Quality Standards (NAAQS) and potential economic impacts on the portland cement industry cement industry may be significantly affected by this new ozone standard with regard to its control of emissions of NOx and to a lesser extent, VOC. T... R Schreiber,M ...
http://epw.senate.gov/envlaws/cleanair.pdf. Accessed 26 Aug 2011 $$$ for Clean Engine Project. California Environmental Protection Agency, Air Resources Board. http://www.arb.ca.gov. Accessed 26 Aug 2011 Ambient Air Quality Standards. California Environmental Protection Agency. Air Resources ...
Part 1: general description of pollutants, levels and standards. Ventilation Information Paper 2, 2003. 4. POSUDIN Y. Volatile Organic Compounds in Indoor Air: Scientific, Medical and Instrumental Aspects. http://www.ekmair.ukma.kiev.ua/handle/123456789/885. 5. YOSHIDA T., MATSUNAGA I. A ...
Feasibility Study of Low-Concentration NMHC Monitoring in Ambient Air Using Nutech 3000 Portable Analyzer Background The Nutech 3000 portable analyzer utilizes catalytic oxidation + FID (Flame Ionization Detector) analysis principle, enabling rapid monitoring for THC, CH4, and NMHC in source emission VOC...
The average concentration of PM2.5 from January 11 to 14 was 354 ± 76 μg m−3, which was the highest in January (Fig. S2). According to the Ambient Air Quality Standards of China (GB3095–2012), the secondary standard of the 24-h average mass concentration of PM2.5 is 75 μg ...
Air Ambient air filters/traps External air filters/traps Chimney exhaust filters Air filters from contaminated sites Dusts Extraction and concentration There are various techniques and strategies used to prepare and transfer VOC to instrumentation for analysi...