nitrogen dioxide sampling News | Environmental XPRT

ASTM D1607 - 91(2011) standard test method for nitrogen dioxide content of the atmosphere (griess-saltzman reaction)

Nitrogen dioxide plays an important role in photochemical smog-forming reactions and, in sufficient concentrations, is deleterious to health, agriculture, materials, and visibility. In combustion processes, significant amounts of nitric oxide (NO) may be produced by combination of atmospheric nitrogen and oxygen; at ambient temperatures NO can be converted to NO2 by oxygen and other atmospheric ...

Oct. 18, 2011

By ASTM International

ASTM D3608 - 95(2011) standard test method for nitrogen oxides (combined) content in the atmosphere by the griess-saltzman reaction

Both NO2 and NO play an important role in photochemical-smog-forming reactions. In sufficient concentrations NO2 is deleterious to health, agriculture, materials, and visibility. In combustion processes, significant amounts of NO may be produced by combination of atmospheric nitrogen and oxygen; at ambient temperatures, NO can be converted to NO2 by oxygen and other atmospheric oxidants. ...

Oct. 17, 2011

By ASTM International

Fast uptake Nitrogen dioxide and VOC monitoring using passive sampling techniques - Rapid Air Monitors

Leading supplier of air pollution monitoring equipment, Gradko Environmental, is pleased to announce the first products in its new range of Rapid Air Monitors. Environmental consultants globally have been looking for faster passive methods of measuring ambient air pollution, particularly for inorganic compounds. Gradko have responded to this market need with the introduction of the Rapid Air ...

Aug. 24, 2012

By Gradko International Ltd

PA DEP Report: Marcellus Operations in Northcentral Region Show No Impact on Short-Term Air Quality

An air quality study near Marcellus Shale natural gas operations in Bradford, Lycoming, Sullivan and Tioga counties found no emission levels that would pose a public health concern, according to a report released today by the Department of Environmental Protection."The results show there are no emission levels that would be of concern to the health of residents living and working near these ...

May 19, 2011

By Pennsylvania Department of Environmental Protection

DEP Issues Report on Short-Term Air Quality Impacts from Marcellus Shale Operations in Southwest PA

Agency Continues to Monitor Air Quality in Other PA Regions HARRISBURG, Pa. - Department of Environmental Protection today released a report on a five-week air quality study conducted near Marcellus Shale natural gas operations in southwestern Pennsylvania's Greene and Washington counties. "This short-term study only provides a snapshot of the air contaminants we found at surveyed sites, but ...

Nov. 1, 2010