Determination of polycyclic aromatic hydrocarbons in precipitation using solid-phase extraction and column liquid chromatography

Significance of wet deposition to removal of atmospheric particulate matter and polycyclic aromatic hydrocarbons: A case study in Guangzhou, China

“…The annual C VWM of S 15 PAH in Guangzhou (170 ng L À1 ) was lower than those obtained from industrial regions with high population densities in Europe and Asia, i.e., 210 ng L À1 in Wielkopolski and 280 ng L À1 in Pozan (Walna et al, 2001), 360 ng L À1 in Paris (Ollivon et al, 2002), 430 ng L À1 in Northern Greece (Manoli et al, 2000), 540 ng L À1 in Hungary (Kiss et al, 1996), 580 ng L À1 in Fortaleza of Brazil (Cavalcante et al, 2012), 1340 ng L À1 in Ankara of Turkey (Gaga et al, 2009), and 1910 ng L À1 in Guangzhou (Huang et al, 2009), but higher than those from small towns and rural areas in Europe, i.e., 72 ng L À1 in west of Paris (Motelay-Massei et al, 2003), 93 ng L À1 in Brno (Skrdlíková et al, 2011), and 110 ng L À1 in Northern Italy (Olivella, 2006).…”

High-Precision GC-MS Analysis of Atmospheric Polycyclic Aromatic Hydrocarbons (PAHs) and Isomer Ratios from Biomass Burning Emissions

“…[12][13][14][15][16][17][18]. However, suitability of many of these is limited to low aerosol loading.…”

Preparation, characterization and application of octadecyl modified magnesium oxide microspheres

“…Thus, 9% of acetone is the optimal concentration for the preconcentration of 2-6-ring PAHs. This concentration is equal or less than that reported in previous reports (10% or 25% IPA, 20% acetone) on silica-based materials [32][33][34], which is beneficial to reduce costs. In contrast, it is greater than that published in a previous report on MgO microspheres (5% acetone) [6].…”

“…As a matter of fact, low concentration of organic modifier can increase the solubilities of low ring PAHs, but cannot increase the solubilities of high ring PAHs sufficiently. This will lead to the irreversible adsorption of high ring PAHs onto the surface of glassware [34]. High concentration of organic modifier will result in an early breakthrough of low ring PAHs which is conducive to low recoveries.…”

“…PAHs retained on the cartridges are usually eluted with organic solvents, such as ACN [34], tetrahydrofuran [35], acetone [36], hexane [6,32], DCM [6,31], ethyl acetate [6,37] or mixtures of them [36]. Correspondingly, the resulting recoveries will change significantly with the variation of eluting solvents.…”