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As more and more smog and sandstorms hit cities around the world in recent years, the monitoring of one main contaminant in these hazes, particulate matter (PM), has become ever more important.  Fine particulates, PM2.5 (sizes smaller than 2.5 micrometers), are of particular concern because they may cause serious health problems once inhaled owing to the ease of their intrusion deep into the respiratory ducts.  The need for their correct detection and measurement in the air is therefore important.  In addition to a measurement technology based on manual sampling and the weighting of PM sample filters, NML further assists Taiwan’s Environment Protection Agency in setting up a field performance evaluation platform for continuous ambient air quality monitors in Shenhua of Tainan.  The platform is capable of performing instrument performance comparison to further ensure the quality of monitors measuring data and enhance the forecast accuracy of air quality.

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