TY - JOUR
T1 - Artifacts of ionic species for hi-vol PM10 and PM10 dichotomous samplers
AU - Tsai, Chuen-Tinn
AU - Perng, Shuang Neng
PY - 1998/5/1
Y1 - 1998/5/1
N2 - This study employs two Annular Denuder Systems (ADS10 and ADS2.5) to quantify sampling artifacts of soluble ionic species determined by the high-volume PM10 (hi-vol PM10) sampler using quartz fiber filters and PM10 dichotomous (Dichot) sampler using Teflon Biters. According to the experimental results, the percentage of artifact of a species over the actual species concentrationis +11, +8 and +15% for PM10(HV), PM10(DICH), respectively, for sulfate species; -16, -21 and -21% for PM10(HV), PM10(DICH), PM2.5(D)ICH, respectively, for nitrate species; -24, -32 and -54% for PM10(HV), PM10(DICH), PM2.5(DICH), respectively, for chloride ion species; -17, -21 and -18% for PM10(HV), PM10(DICH), PM2.5(DICH), respectively, for chloride ion species; -17, -21 and -18% for PM10(HV), PM10(DICH), PM2.5(DICH), respectively, for ammonium ion species. For volatile species such as nitrate, ammonium and chloride ions, additional sampling losses due to gas-particle and particle-particle interactions are more important than pure volatilization loss. Amount of positive and negative artifacts is approximately equal and the amount of net artifact does not account for more than 15% of PM10 concentration.
AB - This study employs two Annular Denuder Systems (ADS10 and ADS2.5) to quantify sampling artifacts of soluble ionic species determined by the high-volume PM10 (hi-vol PM10) sampler using quartz fiber filters and PM10 dichotomous (Dichot) sampler using Teflon Biters. According to the experimental results, the percentage of artifact of a species over the actual species concentrationis +11, +8 and +15% for PM10(HV), PM10(DICH), respectively, for sulfate species; -16, -21 and -21% for PM10(HV), PM10(DICH), PM2.5(D)ICH, respectively, for nitrate species; -24, -32 and -54% for PM10(HV), PM10(DICH), PM2.5(DICH), respectively, for chloride ion species; -17, -21 and -18% for PM10(HV), PM10(DICH), PM2.5(DICH), respectively, for chloride ion species; -17, -21 and -18% for PM10(HV), PM10(DICH), PM2.5(DICH), respectively, for ammonium ion species. For volatile species such as nitrate, ammonium and chloride ions, additional sampling losses due to gas-particle and particle-particle interactions are more important than pure volatilization loss. Amount of positive and negative artifacts is approximately equal and the amount of net artifact does not account for more than 15% of PM10 concentration.
KW - Acidic aerosol
KW - Denuder
KW - Dichotomous sampler
KW - hi-vol PM sampler
KW - Sampling artifact
UR - http://www.scopus.com/inward/record.url?scp=0032076493&partnerID=8YFLogxK
U2 - 10.1016/S1352-2310(97)00387-7
DO - 10.1016/S1352-2310(97)00387-7
M3 - Article
AN - SCOPUS:0032076493
SN - 1352-2310
VL - 32
SP - 1605
EP - 1613
JO - Atmospheric Environment
JF - Atmospheric Environment
IS - 9
ER -