Distribution, source, and ecological risk assessment of polycyclic aromatic hydrocarbons (PAHs) in surface sediments from the Hun River, northeast China

Abstract

In this study, the occurrence and distribution of 16 polycyclic aromatic hydrocarbons (PAHs), listed by the United States Environmental Protection Agency (US EPA), were investigated in surface sediment samples from the Hun River, northeast China. The data was then used to assess the potential ecological risk. [g,h,i]perylene) showed that they had been emitted from a number of different sources, especially the pyrolytic emissions. The results of the ecological risk assessment, which compared the PAH concentrations with the effect range low (ERL) and the effect range median (ERM) values, indicated that several individual PAH concentrations at four sites in the downstream section of the Hun River were higher than the ERM, suggesting that there was a potential ecological risk in these areas.

Occurrence and distribution of polycyclic aromatic hydrocarbons in surface sediments of San Diego Bay marinas

“…engines) and modern biomass sources (e.g. wood, grass, cooked food over flame), FLA/(FLA+PY) 0.4-0.5 and/or IcdP/(IcdP+BghiP) 0.2-0.5 (Yunker et al 2002;Chen et al 2012;Keshavarzifard et al 2014;Liu et al 2015). PAHs with 3, 4, and 5 rings usually dominate emissions from both wood-burning and vehicle exhaust, because larger molecules tend to be incorporated into soot particles (Richter and Howard 2000).…”

“…Once the PAHs enter the marine environment, they can then readily be taken up by marine biota (Perugini et al 2007;Martinez-Gomez et al 2010;Liu et al 2015) either through their gills or via ingestion (Baumard et al 1999). The main mechanism underlying toxicity of PAHs is their direct binding to hydrophobic sites of macromolecules such as lipids, proteins, and nucleic acids, interfering with their normal functioning (Vijayavel et al 2004;Pampanin and Sydnes 2013).…”

Estimation of Polycyclic Aromatic Hydrocarbons Pollution in Mediterranean Sea from Volturno River, Southern Italy: Distribution, Risk Assessment and Loads

“…LMW-PAHs concentrations were progressively decreased by dilution due to their high water solubility and easier degradation. Therefore, HMW compounds had a higher resistance to degradation and could easily reach the sediment due tothe low water solubility, low vapour pressure, and refractory behavior [41,[67][68][69].…”

Transcriptomic Profiles in Zebrafish Liver Permit the Discrimination of Surface Water with Pollution Gradient and Different Discharges

“…The present study focused on analyzing transcriptomic profiles in zebrafish exposed to the surface water, with the aim to evaluate the impacts of complex mixtures of pollutants at environmentally relevant concentrations on aquatic vertebrates, as well as to elucidate the potential of transcriptomic profiles to differentiate pollution sources, and to identify the toxic components. The Hun River is a main tributary located in the Liao River basin, flowing through the city of Shenyang which is the capital of Liaoning Province and one of the most important industrial cities in China [16,19]. The Dongzhou River and Xi River, two main tributary flowing into Hun River, have been identified as the receiving water of chemical wastewater and pharmaceutical wastewater, respectively [20,21].…”