Airborne particulates and polycyclic aromatic hydrocarbons (PAHs) in ambient air in Donghe, northern China

J Environ Sci Health A Tox Hazard Subst Environ Eng. 2009 Jul 15;44(9):854-60. doi: 10.1080/10934520902958526.

Abstract

Five sets of size-fractionated particles were collected in a northern China village in various seasons in order to measure respirable airborne particulates (PM10) and particulate phase polycyclic aromatic hydrocarbons (PAHs) in ambient air. The time-weighted annual mean concentration and standard deviation of PM10 were 358 +/- 107 microg/m3, higher than both the national standard (100 microg/m3) and the levels observed in several contaminated northern Chinese cities. In addition to high levels of PAHs (391 +/- 487 ng/m3), the fraction of higher molecular weight PAHs was higher than most reported in the literature, and the time-weighted annual mean benzo(a)pyrene equivalent concentration was 44.2 +/- 51.4 ng/m3, more than four times the national standard of 10 ng/m3 and 44 times the WHO guideline of 1 ng/m3. Apparently, residents in Donghe suffer from exposure to high levels of both PM10 and particulate phase PAHs. The particle size distribution was centered in the range of Dp < or = 3.3 microm in winter and shifted to the ranges of Dp < or = 2.1 microm and 5.8 microm < Dp < 10 microm in spring and summer respectively. Approximately 90.0% of PAHs were associated with airborne particulates with Dp < or = 2.1 microm.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Air / analysis*
  • Air / standards
  • Air Pollutants / analysis*
  • China
  • Cities
  • Environmental Monitoring
  • Particle Size
  • Particulate Matter / analysis*
  • Polycyclic Aromatic Hydrocarbons / analysis*
  • Seasons

Substances

  • Air Pollutants
  • Particulate Matter
  • Polycyclic Aromatic Hydrocarbons