Pollution status of polycyclic aromatic hydrocarbons in surface sediments off the Jiangsu coastal zone, East China: A case study of Rudong

Huang, Runqiu; Liu, Qing; Zhao, Yifei; Shi, Wenting; Xu, Min

doi:10.1016/j.marpolbul.2021.112253

Cited by 9 publications

(3 citation statements)

References 67 publications

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“…Figure S2 (shown in supporting information) presents cross plots of PAHs for BaA to (BaA + CH) ratios versus the ratios of IP to (IP + Bghip) in sediments. The ratios of IP to (IP + Bghip) at sites FS1 (in wet seasons), FS2 (in dry seasons), and FS5 (in dry seasons) were between 0.2 and 0.5, and this suggests that the petroleum combustion could be the main PAH sources (Huang et al, 2021), whereas BaA to (BaA + CH) ratios were greater than 0.35, suggesting that wood, coal, or grass combustion could be main PAH origins (Huang et al, 2021; Thang et al, 2020). It implies that the petrogenic combustion (e.g., fuel and vehicular traffic) and biomass (especially agricultural residue waste) sources were the main causes of PAHs deposition via the long‐term atmospheric movement at these sampling sites.…”

Section: Resultsmentioning

confidence: 99%

“…It implies that the petrogenic combustion (e.g., fuel and vehicular traffic) and biomass (especially agricultural residue waste) sources were the main causes of PAHs deposition via the long‐term atmospheric movement at these sampling sites. Furthermore, the ratios of IP to (IP + Bghip) and BaA to (BaA + CH) at sites FS1 (in dry seasons), FS3 (in dry seasons), and FS4 (in wet and dry seasons) were greater than 0.5 and 0.35, respectively, suggesting that coal, wood, or grass combustion (including open burning) might be sources of PAHs (especially for LPAHs) (Huang et al, 2021; Thang et al, 2020).…”

Section: Resultsmentioning

confidence: 99%

“…However, if the value is in the range from 0.2 to 0.5, it implies that the source comes from petroleum combustion. If the value is higher than 0.5, it implies that the source could be the combustion of coal, wood, or grass (Huang et al, 2021; Thang et al, 2019). FLU/(FLU + PY) If the ratio of FLU to (FLU + PY) is higher than 0.5, the source of PAHs is generally from biomass burning.…”

Section: Methodsmentioning

confidence: 99%

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Toxicity determination, pollution source delineation, and microbial diversity evaluation of PAHs‐contaminated sediments for an urban river

Yao

Lin

et al. 2022

Water Environment Research

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The Feng‐Sang River is a metropolitan river in Kaohsiung City, Taiwan. In this study, Feng‐Sang River sediments were analyzed to investigate the distributions and sources of polycyclic aromatic hydrocarbons (PAHs). The Sediment Quality Guidelines (SQGs), potentially carcinogenic PAHs (TEQcarc), and toxic equivalence quotient (TEQ) were applied to evaluate influences of PAHs on ecosystems and microbial diversities. Results indicate that PAHs concentrations varied between seasons and locations. The concentrations of ∑16PAHs ranged from 73.6 to 603.8 ng/kg in dry seasons and from 2.3 to 199.3 ng/kg in wet seasons. This could be because of the flushing effect during wet seasons, which caused the movement and dilution of the PAH‐contaminated sediments. Diagnostic ratio analysis infers that high PAHs levels were generated by combustion processes and vehicle traffic, and results from multivariate descriptive statistical analysis also demonstrate that the vehicular traffic pollution could be the major emission source of PAHs contamination. Comparisons of PAHs with SQGs indicate that PAHs concentrations in sediment were below the effects range low (ERL) values, and thus, the immediate threat to organisms might not be significant. The diagnostic ratio analyses are effective methods for PAH source appointment. The metagenomic assay results imply that sediments contained essential microbial species with eminent diversity. The detected PAH‐degrading bacteria (Desulfatiglans, Dechloromonas, Sphingomonas, Methylobacterium, Rhodobacter, Clostridium, and Exiguobacterium) played a key role in PAHs biotransformation, and Dechloromonas and Rhodobacter had a higher relative abundance. Results of microbial diversity analyses indicate that the contaminated environment induced the changes of governing microbial groups in sediments. Practitioner Points Diagnostic ratio analyses are effective methods for PAHs source appointment. Microbial composition in sediments are highly affected by anthropogenic pollution. Combustion and vehicle traffic contribute to urban river sediments pollution by PAHs. Dechloromonas and Rhodobacter are dominant PAHs‐degrading bacteria in sediments.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%