This project started from November 7th 2012 and will end on November 6th 2014. The project goal is using manual method (NIEA A205) to monitor PM2.5 in Northern Taiwan at 10 monitoring stations: Keelung(station number:001), Xizhi(station number:002), Banqiao(station number:006), Shilin(station number:011), Wanhua(station number:013), Taoyuan(station number:017), Hualien(station number:063), Yangming(station number:064), Yilan(station number:065) and Matsu(station number:075). The PM2.5 samples were collected once every 3 days with 24h sampling time continuously from 00:00 to 24:00 on appointed day, simultaneously at all stations. Some rules should be followed: (1) Before sampling start, filters should be set up in samplers within 12 hours. (2) From the end of sampling, filters should be taken out from samplers within 12 hours. (3) All samples should get in to lab (SGS) within 24 hours after drawn out form samplers. Field sampling were performed by two companies (SGS ＆ TAET), and SGS analyzed those samples. SGS took charge of sampling at 6 stations including Matsu, Hualien, Shilin, Wanhua, Banqiao and Taoyuan. TAET did sampling of the other 4 stations including Keelung, Xizhi, Yangming and Yilan. At the first stage (2012/11/7~2013/11/30), 1230 samples should be accomplished. In the end, 1189 samples were available, 26 samples were failed, and 15 samples were suspended. The rate of achievement was 96.7 %. At the Second stage (2013/12/01~2014/11/06), 1130 samples should be accomplished. In the end, 1079 samples were available, 26 samples were failed, and 25 samples were suspended. The rate of achievement was 95.5 %. Totally, the project had 2360 samples should be accomplished. In the end, 2268 samples were available, 51 samples were failed, and 41 samples were suspended. The rate of totally achievement was 96.1 %.

fine suspended particulate;very sharp cut cyclone(VSCC)