Ozone Regulation - Air and Climate Information

Articles & Whitepapers

Aircraft-based measurements of High Arctic springtime aerosol show evidence for vertically varying sources, transport and composition

Abstract. The sources, chemical transformations and removal mechanisms of aerosol transported to the Arctic are key factors that control Arctic aerosol–climate interactions. Our understanding of sources and processes is limited by a lack of vertically resolved observations in remote Arctic regions. We present vertically resolved observations of trace gases and aerosol composition in High ...

Developpement of on-line and field dual TD GC – MS for automatic VOC monitoring on petrochemical sites

Significance of the Research: Ambient air is polluted by many VOCs coming from Petrochemical Industry. PAMS, Oxygenated or Halogenated VOCs can be found in many ranges of concentration between ...

EPA – Revised Cross-State Air Pollution Rule Update for the 2008 Ozone NAAQS

This proposed action is taken in response to the United States Court of Appeals for the District of Columbia Circuit’s (D.C. Circuit) remand of the Cross-State Air Pollution Rule (CSAPR) Update in Wisconsin v. EPA on September 13, 2019. The ...

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NOx Converter Tester

The Sonimix 4001 is a stand alone ozone primary transfer standard able to generate ozone together with dry or wet air (optional) allowing to calibrate the ozone monitors in several points. It generates an outflow of 3 Nl/min air containing 10 to 1000 ppb O3, with stability and reproducibility of the concentration better than 1% relative. The extended range model generates 10 ppb to 10 ppm at 3 ...