current monitoring News
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A Tale of Two Cities' Black Carbon Measurement
Advanced photoacoustic measurement of black carbon particles, using equipment available via UK-based Enviro Technology, has led to a better understanding of pollution in Los Angeles and Mexico City. PAX (Photoacoustic Extinctiometer) Black Carbon Monitors have been deployed to deliver a more accurate picture of daily black carbon trends in these two similarly densely-populated cities. The ...
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EPA Establishes New 1-hour Standard for Sulfur Dioxide
On June 2, 2010 the U.S. EPA established a new 1-hour primary National Ambient Air Quality Standard (NAAQS) for sulfur dioxide (SO2). The new 1-hour standard was set at the level of 75 parts per billion (ppb) calculated as the three-year average of the 99th percentile of the annual distribution of daily maximum 1-hour average concentrations. With the establishment of the new 1-hour SO2 ...
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Air monitoring equipment from Markes International comes top in US EPA field trials
Markes International (Cincinnati, OH, USA) has come first and second in independent field-trials of air monitoring equipment carried out by the US Environmental Protection Agency. The results of this second rigorous phase of assessment were announced on 10 August to an audience of air-monitoring experts at the National Ambient Air Monitoring Conference in St Louis, MO, and re-inforce the ...
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