Source and Ecological Risk Characteristics of PAHs in Sediments from Qinhuai River and Xuanwu Lake, Nanjing, China

Zhao, Zhen‐Hua; Qin, Zhirui; Cao, Jingjing; Xia, Liling

doi:10.1155/2017/3510796

Cited by 35 publications

(22 citation statements)

References 88 publications

(105 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Table 3 shows values > 0.35 for both water and sediment, implying contributions from the burning of nonpetroleum materials, such as refuse or biomass as another major pyrolytic input. This assertion was confirmed in the sediment samples with the use of BaA/228 (Jiao et al 2012 ; Zhao et al 2017 ).…”

Section: Resultsmentioning

confidence: 81%

“…2 . The fairly low level of ∑PAH recorded at E4 may be ascribed to the possible tidal flushing of contaminants adsorbed on sediment particle close to the mouth of the estuary where it discharges into the Indian Ocean (Zhao et al 2017 ). Average levels at the four sampling points were all above the ERL and below effect range median (ERM; 44,792 µg/kg dw).…”

Section: Resultsmentioning

confidence: 99%

“…MEF n = mutagenic equivalent factor (MEF) for each PAH congener ( n ). The TEF values used for BaA, Chry, BbF, BkF, BaP, DiahA, Inpy, and BghiP in these calculations were 0.1, 0.01, 0.1, 0.1, 1, 1, 0.1, and 0.01, respectively, and their corresponding MEF values were 0.082, 0.017, 0.25, 0.11, 1.0, 0.29, 0.31, and 0.19 (Van den Berg et al 2006 ; CCME 2010 ; Lerda 2011 ; Benson et al 2017 ; Zhao et al 2017 ).…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Levels of Polycyclic Aromatic Hydrocarbons in the Water and Sediment of Buffalo River Estuary, South Africa and Their Health Risk Assessment

Adeniji

Okoh

2019

Arch Environ Contam Toxicol

174

View full text Add to dashboard Cite

The incidence and spatial distribution of polycyclic aromatic hydrocarbons (PAHs) in the Buffalo River Estuary in the Eastern Cape Province of South Africa were assessed in this study. A total of 60 surface water and 19 sediment samples were collected from 5 sites of the estuary over a period of 6 months (December 2015 to May 2016). Extraction of PAHs from the water and sediment samples was achieved by using liquid–liquid and soxhlet extraction methods respectively, followed by column clean up with silica gel and quantification by gas chromatography–flame ionization detection. Individual PAH levels in the water and sediment samples ranged from not detected (ND) to 24.91 μg/L and ND to 7792 μg/kg, respectively. Total concentrations of the PAHs in the water and sediment samples varied as 14.91–206 μg/L and 1107–22,310 μg/kg in that order. Total levels of the contaminants were above the target values in the two matrices and were higher in summer than autumn. Although the noncarcinogenic risk of PAHs estimated in the water column through dermal absorption was very low compared with the target value, the carcinogenic risk determined was high for both adults and children. Similarly, benzo(a)pyrene and dibenzo(a,h)anthracene were found to be of higher carcinogenic and mutagenic risks in the sediments collected from the study area. Diagnostic ratios suggest that the target hydrocarbons are predominantly from pyrolytic sources. It therefore could be inferred that the water body is conspicuously polluted; hence, efforts should be made to control all the activities contributing to such magnitude of pollution at the sites.

show abstract

Section: Resultsmentioning

confidence: 81%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Levels of Polycyclic Aromatic Hydrocarbons in the Water and Sediment of Buffalo River Estuary, South Africa and Their Health Risk Assessment

Adeniji

Okoh

2019

Arch Environ Contam Toxicol

174

View full text Add to dashboard Cite

show abstract

“…The above observation did not agree with those of [21]. That observed values lower than 0.1 in the ratio between An/(An+Phe) in sediments from Yinma River, China, but agrees with those of sediment from Pearl River, China and those of sediments Qinhuai River and Xuanwu Lake, Nanjing, China, where there was excessive coal and grass burning along the area [29,30].…”

Section: Source Diagnosis Of Pahsmentioning

confidence: 59%

Untitled

2020

EESRR

View full text Add to dashboard Cite

“…Interestingly, fluoranthene and anthracene were not detected in the present study possibly because they were below the detection limit of the GCMS instrument used. More recently, an investigation of the residual characteristics, sources and ecological risks of PAHs in sediment from 15 typical sites from Qinhuai River and Xuanwu Lake typical urban rivers and lakes collected from October 2015 to July 2016 showed that ∑ PAHs concentration in sediment ranged from 796.2 to 10,470 ng g −1 with an average of 2713.8 ng g −1 [5]. However, the concentrations reported in this study are significantly higher than most of the PAH levels reported elsewhere, suggesting a direct source of PAH precursors into River Elburgon.…”

Section: Introductionmentioning

confidence: 99%

Polycyclic aromatic hydrocarbons in the bottom sediments of Elburgon River—Kenya: precursors for cancer

et al. 2019

View full text Add to dashboard Cite

The exponential growth in the rate of industrialization is a serious precursor for contamination and deterioration of the environment. Water pollution, for instance, is expected to reach disturbing levels in the years to come. Polycyclic aromatic hydrocarbons (PAHs) in water systems are persistent contaminants not only in aquatic systems but also in soil, air and plant materials and are well-known initiators for cancer and gene mutation. Numerous human-dependent activities such as agriculture and suspected wood treatment works in Elburgon may lead to an increased PAH contamination of water in River Elburgon, especially when the internationally set limits are exceeded. The sediment samples were collected in May 2019 during the wet season and treated for analysis of PAHs using a gas chromatograph hyphenated to a mass selective detector. A total of 25 PAHs were quantified in this study out of which pyrene was the most abundant, contributing ≈ 17% of the total concentrations of PAHs identified. The total concentration of the PAHs analyzed in this study was found to be ∑ 25 PAH = 73.19 ± 3.67 μg g −1 dry weight (dw) with pyrene contributing a total concentration ∑ pyrene = 12.44 ± 0.54 μg g −1 dw. On the other hand, benzo[a]pyrene (BaP)-a well-known carcinogen-was significantly high ∑ BaP = 10.67 ± 0.43 μg g −1 . Other major PAHs detected included acenaphthene and 5,6-dihydrobenzo[de] anthracene, 14.57% and ≈ 11% , respectively. The low concentration PAHs included 1-ethenylnaphthalene and 1,4,5-trimethylnaphthalene each at 0.08% . The presence of benzo[a]pyrene in significant amounts is of serious concern on the public health of the residents of Elburgon and its environs. Considering the high levels of PAHs in the sediments of River Elburgon, it is important to note with concern that the water in the river under study is not only be unsuitable for drinking but also unsuitable for other domestic purposes such as irrigation and laundry.

show abstract

Source and Ecological Risk Characteristics of PAHs in Sediments from Qinhuai River and Xuanwu Lake, Nanjing, China

Cited by 35 publications

References 88 publications

Levels of Polycyclic Aromatic Hydrocarbons in the Water and Sediment of Buffalo River Estuary, South Africa and Their Health Risk Assessment

Levels of Polycyclic Aromatic Hydrocarbons in the Water and Sediment of Buffalo River Estuary, South Africa and Their Health Risk Assessment

Untitled

Polycyclic aromatic hydrocarbons in the bottom sediments of Elburgon River—Kenya: precursors for cancer

Contact Info

Product

Resources

About