Study of Air Toxics Released from the Pre- Harvest Burning of ...
Study of Air Toxics Released from the Pre- Harvest Burning of ...
Study of Air Toxics Released from the Pre- Harvest Burning of ...
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Methodology: PM 2.5<br />
PM 2.5 sampling followed EPA O<strong>the</strong>r Test Methods 27 & 28 (modified)<br />
– Cyclone used to separate particles based on size.<br />
– Filterable PM 2.5 collected on a glass fiber filters and tissuquartz filters (for<br />
EC/OC analysis)<br />
– Condensable particulate matter (CPM) collected in a dry impinger train<br />
and on Teflon CPM filter.<br />
Glass fiber filters were pre- and post weighed.<br />
Impingers and <strong>the</strong> Teflon filter rinsed with water and solvent to collect CPM.<br />
The extracts were evaporated and <strong>the</strong> remaining residue (CPM) was<br />
weighed.<br />
EC/OC fraction <strong>of</strong> <strong>the</strong> PM 2.5 was determined using an OCEC Carbon<br />
Aerosol Analyzer (Sunset Laboratory) following NIOSH method 5040.<br />
• Analyzed at <strong>the</strong> Research Center for Environmental Changes, Academia<br />
Sinica, Taipei, Taiwan
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