Artículos de revistas
Survey of persistent organic pollutants (POPs) and polycyclic aromatic hydrocarbons (PAHs) in the atmosphere of rural, urban and industrial areas of Concepciόn, Chile, using passive air samplers
Registro en:
Atmospheric Pollution Research 3
1309-1042
Autor
Pozo, Karla
Harner, Tom
Rudolph, Anny
Oyola, German
Estellano, Victor H.
Ahumada, Ramón
Garrido, Mauricio
Pozo, Katerine
Mabilia, Rosanna
Focardi, Silvano
Resumen
Artículo de publicación ISI Passive air samplers (PAS) consisting of polyurethane foam (PUF) disks were used to assess air concentrations of
polychlorinated biphenyl (PCBs), polycyclic aromatic hydrocarbons (PAHs), organochlorine pesticides (OCPs) and
polybrominated diphenyl ethers (PBDEs) in rural, urban, and industrial sites in Concepciόn, Chile during a two–
month deployment in the summer of 2007. Results for PCBs and PAHs showed a clear rural–urban–industrial
gradient. PCB air concentrations (pg m–3) ranged from 30 to 350 and were 2 to 5 times higher at industrial
sites compared to rural sites. For PAHs, air concentrations (ng m–3) ranged from 26 to 230 and were 4 to 8 times
higher at industrial sites. The PCB congener profile was dominated by high molecular weight PCBs at urban and
industrial sites. The PAH profile was dominated by 3– and 4–ring PAHs accounting for more than 90% of the
Σ15PAH, and dominated by phenanthrene (40%). Of the HCH isomers, only γ–HCH was detected with air
concentrations ranging from 5 to 120 pg m–3. While for DDT isomers, p,p’–DDE was the only compound
detected, ranging from below detection limit (BDL) to 360 pg m–3. Other OCPs (chlordanes, heptachlor and
Dieldrin) showed low air concentrations (pg m–3) on the order of 1 – 3. Endosulfan, which is a newly listed
persistent organic pollutant (POP) under the Stockholm Convention (SC) on POPs, ranged from 14 to 20 pg m–3.
Polybrominated diphenyl ethers (PBDEs) also newly listed under the SC, were relatively uniform across the
transect with air concentrations (pg m–3) in the range of 5 to 10. This study represents one of the first efforts
to characterize the POPs composition in ambient air for urban and industrial areas of Chile.