Occurrence, sources and health risk assessment of polycyclic aromatic hydrocarbons in urban (Pudong) and suburban soils from Shanghai in China

Distribution and risks of polycyclic aromatic hydrocarbons in suburban and rural soils of Beijing with various land uses

“…The omnipresence of PAHs in the polar regions and snowy mountains has been well documented (Nam et al 2008;Wang et al 2007). The emission and accumulation of PAHs have aroused broad concerns due to their carcinogenic toxicity to human health (Ma et al 2015;Vane et al 2014;Wang et al 2015).…”

Polycyclic aromatic hydrocarbons in soils from the Central-Himalaya region: Distribution, sources, and risks to humans and wildlife

“…SQGs of 14 PAHs were proposed based on the non-carcinogenic effects of PAHs by the CCME (Table 2) (Wang et al, 2015). The SQGs for agriculture were adopted because agricultural land predominated in the present study area.…”

“…Since the mean risk quotient (m-RQ) could reduce a large amount of chemical data into a single number for mixtures of contaminants (McCready et al, 2006;Wang et al, 2015), the m-RQ was used to assess combined ecological risks of target PAHs in Central Himalayan soils. Based on the SQGs of 11 PAHs (ANT, BaP, FLT, NAP, PHE, BaA, BbF, BkF, DahA, IcdP, and PYR), the m-RQ was calculated by dividing the concentration of each individual PAH by its respective midrange SQG, summing the quotients, and dividing by the total number of all individual PAHs.…”

“…The procedure was performed following guidelines specified in the user manual. The number of factors in the PMF model was selected based on closeness of a robust Q value (robust Q is the goodness-of-fit parameter calculated excluding outliers) to the theoretical Q value (theoretical Q = nm for a small data set, where n = number of samples, m = number of variables), the diagnostic plots, and the relevance of the resolved factors to known physical sources (Wang et al, 2015).…”

Heavy Metal in Urban Soil: Health Risk Assessment and Management

“…Urban soil is an important part of urban ecological environment, and it is closely related to urban water, atmosphere, groundwater, and other environmental factors [7]. Urban soil is located in the central position of urban ecological environment, which is not only the sink of various pollutants, but also the source of various pollutants; so it is often used as an important indicator of comprehensive environmental quality of urban [8,9]. Heavy metals are a kind of toxic pollutants, which are difficult to degrade in the environment.…”