Development of human health ambient water quality criteria of 12 polycyclic aromatic hydrocarbons (PAH) and risk assessment in China

Using a Probabilistic Model and Local Parameters to Improve the Reliability of Ambient Water Quality Criteria for the Protection of Human Health: A Case Study of Organophosphate Esters in China

“…This phenomenon is in accordance with the field-measured BAFs for OPEs in freshwater organisms in China, such as organisms in Taihu Lake and surface waters in Guangdong Province and Beijing. 33−35 To fully understand the impacts of log K ow on the bioaccumulation of compounds without the consideration of lipid content in organisms and organic carbon in water, we collected the national BAFs of several kinds of traditional organic compounds reported in previous studies, such as polycyclic aromatic hydrocarbons (PAHs) (log K ow : 3.92−6.7) and polybrominated diphenyl ethers (PBDEs) (log K ow : 5.94− 8.27), 9,36 and combined them with the results for OPEs obtained in this study to draw a plot of log national BAFs versus log K ow values (Figure 1a). A distinct linear correlation between the log national BAFs and log K ow values was observed (p < 0.05), suggesting that the accumulation of organic pollutants in organisms was mainly driven by hydrophobicity, excluding the impacts of different lipid contents in organisms and organic carbon in water.…”

“…Specifically, the national default lipid fraction of commonly consumed aquatic organisms in China within each trophic level ( f l(TL, n ) ) is missing, although it is necessary for the derivation of national bioaccumulation factors (BAFs) for pollutants. Previous studies derived China’s HHWQC for pollutants referencing the f l(TL, n ) in the U.S., − which inevitably resulted in deviations due to the different organism species, age, sex, habitat, dietary composition, and so forth, among different countries . (ii) Some of the current parameters cannot reflect characteristics across China.…”

“…Thus, the present FI n cannot represent the consumption habits of aquatic organisms for the entire population in China. (iii) Although the field-measured BAFs were recommended as the most credible for the derivation of national BAFs for pollutants, the national BAFs derived only based on the field-measured BAFs in a particular waterbody in China cannot reflect the central tendency of bioaccumulation across surface waters all over China. , These basic problems need to be solved immediately to accurately derive China’s HHWQC for surface freshwater and provide scientific bases for the amendment of the National Surface Water Quality Standard in China.…”

A review of the in-situ capping amendments and modeling approaches for the remediation of contaminated marine sediments

“…Sediments represent the main receptor of organic and inorganic pollutants entering the aquatic system including heavy metals, polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), etc., which are principally released into the environment by industrial and anthropic activities (Chen et al, 2020).…”

Fast Location and Isolation of Phenanthrene-degrading Halophilic Microbial Community and its Degradation Pathway

“…Among all kinds of petroleum compounds, polycyclic aromatic hydrocarbons (PAHs) composed from two or more fused aromatic rings had chemical stability and extremely di cult biodegradation 1 . As an common toxic carcinogenic pollutant to human and animals 2,3 , PAHs threatened human food safety through the accumulation in the food chain 4 . There were large number of PAHs utilizing microbes in high salinity oil polluted sea area and offshore oil eld environment 5,6 .…”