Enrichment of polycyclic aromatic hydrocarbons in forest soils near a blast furnace plant

Polycyclic aromatic hydrocarbon in urban soil from Beijing, China

“…Compared with the surface soil from the , 2005), the concentration with the high molecular weight mass was obviously higher. However, the change trend of PAHs in urban area was basically consistent with that in the outskirts area (Fig.3) EPA-PAHs was much higher than the target value set for unpolluted soil (0.02-0.05 pg/g dw; VROM, 1994) and that in site 16-33 even exceeded 4 pg/g intervention value set for soil sanitation (Van Brummelen et al, 1996). Compared with the reports published in other urban region, the result was significantly lower than those presented in urban soil fiom New Orleans , 1999) and Tianjin City of China (0.818 kg/g as mean ;Wang et al, 2003).…”

Polycyclic aromatic hydrocarbons contamination in subsoil from outskirts of Beijing, People's Republic of China

“…Generally, about 93.3% of the subsoil sample on Beijing outskirts were contaminated with PAHs obviously above the natural level resulting from plant synthesis and fires (0.001-0.010 Ag g À1 ) (Edwards, 1983). A majority of samples in the study was much higher than the target value set by Dutch government for unpolluted soil (0.02-0.05 Ag g À1 dried weight), but no samples exceeded 4 Ag g À1 -the intervention value set for soil sanitation (Van Brummelen et al, 1996). They were also well below the guideline values for less sensitive land-use with groundwater protection which is 40 Ag g À1 (SNV, 1996).…”

Dioxin-like compounds in agricultural soils near e-waste recycling sites from Taizhou area, China: Chemical and bioanalytical characterization

“…However, the concentrations of 7 dioxin-like PAHs exceed the Swedish soil limit of 300 ng/g dw for sensitive land use at locations 2, 5, 6, 9 and 10 (Swedish EPA, 2002), while the total PAH concentrations of all the samples exceeded the typical concentration of arable topsoil (around 200 ng/g dw) in Sweden (Berset and Holzer, 1995). The target established by the Dutch government for PAHs in uncontaminated soil is 20-50 ng/g dw (Van Brummelen et al, 1996), according to which the soils in Taizhou area were considered to be heavily polluted.…”