Polycyclic aromatic hydrocarbons (PAH) in superficial water from a tropical estuarine system: Distribution, seasonal variations, sources and ecological risk assessment

Santos, Eugene; Souza, Michel R.R.; Vilela, Antônio R.; Soares, Laiane S.; Frena, Morgana; Alexandre, Marcelo R.

doi:10.1016/j.marpolbul.2017.12.014

Cited by 45 publications

(15 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The 3-ringed PAHs are dominant in petroleum; their prevalence is usually linked to atmospheric deposition and petroleum contamination, while the prevalence of the 4-ringed PAHs at all the sampling sites suggested that PAH contamination was predominantly from pyrogenic sources. This observation is in line with that of Santos et al (2018), who assessed the distribution and seasonal variations of PAHs in a tropical estuarine system. The prevalence of 4-ringed and heavier PAHs in aquatic systems has been attributed to biomass combustion, but the poor solubility of PAHs in water will result in the high molecular weight (HMW) PAHs (≥5 rings) settling into the sediment compartment (Guo et al, 2007;Chen and Chen, 2011;Santos et al, 2018).…”

Section: Polycyclic Aromatic Hydrocarbon Partitioning and Distributiosupporting

confidence: 91%

“…The observed concentration range of the PAHs is consistent with other studies (ranging from 0.1 µg/L to 137 µg/L) in some South African surface waters, such as the Mutshundudi, Mutale, Nzhelele and Dzindi Rivers, amongst others (Nekhavhambe et al 2014;Amdany et al 2014) and in selected surface waters worldwide (Freitas et al, 2007;Olajire et al, 2007;Zhang et al, 2007;Li et al, 2010;Kafilzadeh et al, 2011;Qin et al, 2013;Tongo et al, 2017;Santos et al, 2018). Lower concentration ranges of between 33.5 ng/L and 126.8 ng/L were reported for bioavailable PAHs amongst other bioavailable fractions of persistent organic pollutants (POPs) in the Ifafi and Eagles Dams, the Homestead and Centurion Lakes, and the Jukskei, airport and Centurion rivers in the Johannesburg area, South Africa (Amdany et al 2014).…”

Section: Levels Of Pahs In Surface Water Samples Of the Diep Riversupporting

confidence: 91%

“…The abundance of 4-ringed PAHs in water samples has been reported previously (Santos et al, 2018). The dominance of the 4-ringed PAHs is obvious amongst the investigated PAHs, however the prevalence of the 3-ringed PAHs at Site DB, relative to Sites DA and DC, suggests a petrogenic contribution from anthropogenic activities near Site DB.…”

Section: Polycyclic Aromatic Hydrocarbon Partitioning and Distributiosupporting

confidence: 75%

See 2 more Smart Citations

Occurrence of PAHs in water samples of the Diep River, South Africa

Awe

Opeolu

Olatunji

et al. 2020

WSA

View full text Add to dashboard Cite

Water SA 46(1) 80-93 / Jan 2020 https://doi.org/10.17159/wsa/2020.v46.i1.7888 Method development on gC-FIDA SPE-GC-FID method was developed for the simultaneous recovery and determination of the 16 PAHs, while a GC coupled to FID was optimised for the separation of the PAH extracts, and quantitation of each of the separated fractions. Standards and calibration solutionsStock solutions (1 000 µg/mL) of the 16 PAHs were prepared by dissolving 0.01 g of each PAH in dichloromethane (DCM) in 10 mL standard flask. A working mixture (cocktail), containing the 16-PAHs mix at 1 000 µg/mL was also prepared. The stock solutions were subsequently transferred into amber vials and kept refrigerated at 4°C until use. The calibration standards (1 µg/mL, 2 µg/mL, 5 µg/mL, 10 µg/mL and 50 µg/mL) were serially prepared from the stock solution by successive dilution with appropriate volume of dichloromethane and stored at 4°C prior to GC-FID analysis.

show abstract

Section: Polycyclic Aromatic Hydrocarbon Partitioning and Distributiosupporting

confidence: 91%

Section: Levels Of Pahs In Surface Water Samples Of the Diep Riversupporting

confidence: 91%

Section: Polycyclic Aromatic Hydrocarbon Partitioning and Distributiosupporting

confidence: 75%

See 1 more Smart Citation

Occurrence of PAHs in water samples of the Diep River, South Africa

Awe

Opeolu

Olatunji

et al. 2020

WSA

View full text Add to dashboard Cite

show abstract

“…To compare the PAHs levels with other water resources, PAH contamination detected in different rivers around the world are listed in Table 3 . In our study, levels of PAHs were similar to the source of the three gorges reservoir (China) [ 37 ] and Japaratuba River (Brazil) [ 38 ], but much higher than those of Gomti River (India) [ 39 ] and even five times higher than the Wyre River (England) [ 40 ]. Besides, comparing the PAHs concentrations with those of Yellow River, Yangtze River and Qiantang River indicated that the PAH concentrations in the present study were somewhat low in China.…”

Section: Resultssupporting

confidence: 56%

Occurrence and Toxicological Risk Assessment of Polycyclic Aromatic Hydrocarbons and Heavy Metals in Drinking Water Resources of Southern China

Yan

Nie

Wang

et al. 2018

IJERPH

View full text Add to dashboard Cite

Polycyclic aromatic hydrocarbons (PAHs) and heavy metals exposure is related to a variety of diseases and cancer development, posing a great health risk to humans. In this study, water samples were collected from nine important water sources in Guangdong, Guangxi and Hainan provinces to determine the degree of PAHs and heavy metals contamination. Overall, the total contents of 16 PAHs and heavy metals were found within the permissible levels. In human health risk assessment, the benzo(a)pyrene equivalent concentration (BaPeq) presented a much lower level than the guideline values announced by Chinese Environmental Protection Agency (CEPA) and United States Environmental Protection Agency (US EPA), demonstrating that the PAHs contamination level in drinking water was mostly acceptable. For heavy metals, the Chronic daily intake (CDI), hazard quotient (HQ) or hazard index (HI) suggested that the water quality in nine water sources was desirable and did not present a risk to human health.

show abstract

“…There are increasing studies on river basins, coastal wetlands, etc. due to the intensification of human activities [42][43][44]. Compared with urban areas where human activities are obvious and intense, there are relatively few studies on watersheds and coastal areas where ecological environment is relatively fragile, which is consistent with the development trend of macro-ecology in recent years.…”

Section: Introductionmentioning

confidence: 89%

Research on Land Use Changes and Ecological Risk Assessment in Yongjiang River Basin in Zhejiang Province, China

Tian

Gong

et al. 2019

Sustainability

View full text Add to dashboard Cite

Studying land use changes and ecological risk assessment in Yongjiang River Basin in Zhejiang Province, China, provides theoretical references for optimal configuration of land resources and maintaining stability of ecosystems. Given impacts of land use changes on landscape patterns in the Yongjiang River Basin, ecological risk assessment indexes were constructed and used to analyze temporal and spatial variation characteristics of ecological risk within different periods. Results show that (1) the construction land area was increased quickly, while the cultivated area decreased sharply. A prominent characteristic of land use changes was manifested by transforming cultivated area and forestland into construction land. The utilized degree of the land increased continuously. Spatially, the land utilized degree in northern regions was higher than that in southern regions and the degree in eastern regions was higher than that in western regions. (2) The ecological risk in the Yongjiang River Basin was intensified and the area of high ecological risk was expanded by 893.96 km2. Regions with low and relatively low ecological risks concentrated in western and southern regions of the Basin, whereas regions with high ecological risks were mainly in northern and eastern regions. Landscapes in cities and towns at a high economic development level are highly sensitive to human activities. (3) Transformation of ecological risk is complicated. Land area with the ecological risk changing from a low level to a high level was 4.15 times that with the ecological risk changing from a high level to a low level. There were 15 transformation directions among different ecological risk regions.

show abstract

Polycyclic aromatic hydrocarbons (PAH) in superficial water from a tropical estuarine system: Distribution, seasonal variations, sources and ecological risk assessment

Cited by 45 publications

References 33 publications

Occurrence of PAHs in water samples of the Diep River, South Africa

Occurrence of PAHs in water samples of the Diep River, South Africa

Occurrence and Toxicological Risk Assessment of Polycyclic Aromatic Hydrocarbons and Heavy Metals in Drinking Water Resources of Southern China

Research on Land Use Changes and Ecological Risk Assessment in Yongjiang River Basin in Zhejiang Province, China

Contact Info

Product

Resources

About