Artifacts of ionic species for hi-vol PM10 and PM10 dichotomous samplers

Chuen-Tinn Tsai*, Shuang Neng Perng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)1605-1613
Number of pages9
JournalAtmospheric Environment
Volume32
Issue number9
DOIs
StatePublished - 1 May 1998

Keywords

  • Acidic aerosol
  • Denuder
  • Dichotomous sampler
  • hi-vol PM sampler
  • Sampling artifact

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