Correlation of PCDD/F and PCB concentrations in soil samples from the Swiss soil monitoring network (NABO) to specific parameters of the observation sites

Levels of polychlorinated dibenzo-p-dioxins and dibenzofurans in China and chemometric analysis of potential emission sources

“…Later, in September 2002, Chen studied 42 surface soil samples collected around Beijing in northern China and found that the background dioxin level of the samples was about 0.88 pg WHO-TEQ g À1 (Chen et al, 2003b). This value is comparable to that for lightly polluted urban and industrial soil of other countries [e.g., 0.7-1.5 pg I-TEQ g À1 in Italy (Caserini et al, 2004), 1.1-11 pg I-TEQ g À1 in Switzerland (Schmid et al, 2005) and 0.13-24.20 pg I-TEQ g À1 in Spain (Schuhmacher et al, 2002)], lower than the background level for soil in Tokyo (42.8 pg I-TEQ g À1 ), and higher than the background level for unpolluted areas [e.g., 0.16 pg I-TEQ g À1 in Spain and 0.4-4.27 pg I-TEQ kg À1 in Japan (Sakurai et al, 2000)]. Dioxin-monitoring data for ambient air samples were available only for Hong Kong.…”

“…Recently, Alcock et al (2001) and Everaert and Baeyens (2002) showed that PCDD/F emission sources have unique congener profiles and that similar industrial processes have similar emission fingerprints. Chemometric analysis is an effective and efficient tool for identifying a dioxin emission source (Okeefe et al, 1994;Buekens et al, 2000;Alcock et al, 2002;Lee et al, 2004;Schmid et al, 2005). Here, chemometric analysis was used to study dioxin pollution in China.…”

Regionalized concentrations and fingerprints of polycyclic aromatic hydrocarbons (PAHs) in German forest soils

“…During PAH-deposition, the fingerprint of PAHs in air and aerosols is altered by varying deposition velocities of compounds with different partitioning equilibrium between the gas phase and the leaf. More volatile compounds tend to achieve an equilibrium state between the two phases, while compounds with intermediate to high volatility are favorably deposited on the leaf surface (Horstmann and McLachlan, 1998;Schmid et al, 2005). This leads to an enrichment of hmwPAHs at plant surfaces and in the soil in comparison to the air.…”

Long-Term Monitoring of Dioxin and Furan Level in Soil Around Medical Waste Incinerator

“…In this possible influenced area, there are no inhabitants except the staff of this plant, so the workers had better take strict protection to avoid health risk. (Jiménez et al, 1996;Domingo et al, 2000), Taiwan (Cheng et al, 2003), Italy (Caserini et al, 2004;Capuano et al, 2005), Switzerland (Schmid et al, 2005), Norway (Andersson & Ottesen, 2008), South Korea (Kim et al, 2008), China , USA (Lorber et al, 1998) and Japan (Takei et al, 2000). The present PCDD/Fs level in this studied region is in the normal level as shown in Fig.6. www.intechopen.com Jiménez et al (1996) found a slight PCDD/Fs contamination in soil near a medical waste incinerator in Madrid Spain, but did not clarify whether this plant was the only PCDD/Fs source responsible for the contamination.…”