Carcinogenic potential of PAHs in oil-contaminated soils from the main oil fields across China

Wang, Jie; Cao, Xiaofeng; Liao, Jingqiu; Huang, Yi; Tang, Xiaoyan

doi:10.1007/s11356-014-3954-9

Cited by 16 publications

(12 citation statements)

References 39 publications

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“…Oil contamination of soils is a complex process and may lead to the destruction of natural habitats and harm the biota, including human beings, making the soil remediation a difficult but critical task (Zhu et al 2004;Ding et al 2010;Wang et al 2014). Nowadays, in situ biodegradation of contaminants is more preferred for its low-cost and less-invasive property compared to traditional ex situ techniques (Paerl et al 2003;Powell et al 2003;Berthe-Corti and Höpner 2005;Fine et al 1997;Sutton et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Long-term oil contamination causes similar changes in microbial communities of two distinct soils

Liao

Wang

Jiang

et al. 2015

Appl Microbiol Biotechnol

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Since total petroleum hydrocarbons (TPH) are toxic and persistent in environments, studying the impact of oil contamination on microbial communities in different soils is vital to oil production engineering, effective soil management and pollution control. This study analyzed the impact of oil contamination on the structure, activity and function in carbon metabolism of microbial communities of Chernozem soil from Daqing oil field and Cinnamon soil from Huabei oil field through both culture-dependent techniques and a culture-independent technique-pyrosequencing. Results revealed that pristine microbial communities in these two soils presented disparate patterns, where Cinnamon soil showed higher abundance of alkane, (polycyclic aromatic hydrocarbons) PAHs and TPH degraders, number of cultivable microbes, bacterial richness, bacterial biodiversity, and stronger microbial activity and function in carbon metabolism than Chernozem soil. It suggested that complicated properties of microbes and soils resulted in the difference in soil microbial patterns. However, the changes of microbial communities caused by oil contamination were similar in respect of two dominant phenomena. Firstly, the microbial community structures were greatly changed, with higher abundance, higher bacterial biodiversity, occurrence of Candidate_division_BRC1 and TAO6, disappearance of BD1-5 and Candidate_division_OD1, dominance of Streptomyces, higher percentage of hydrocarbon-degrading groups, and lower percentage of nitrogen-transforming groups. Secondly, microbial activity and function in carbon metabolism were significantly enhanced. Based on the characteristics of microbial communities in the two soils, appropriate strategy for in situ bioremediation was provided for each oil field. This research underscored the usefulness of combination of culture-dependent techniques and next-generation sequencing techniques both to unravel the microbial patterns and understand the ecological impact of contamination.

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Section: Introductionmentioning

confidence: 99%

Long-term oil contamination causes similar changes in microbial communities of two distinct soils

Liao

Wang

Jiang

et al. 2015

Appl Microbiol Biotechnol

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“…Wan et al (2014) illustrated that NAs concentrations were 50e100 times higher than polycyclic aromatic hydrocarbons (PAHs) concentrations in the same sediment sample after oil spill. Our previous studies also showed that NAs concentrations in Daqing oil field was as high as 132.91 mg/kg, whereas the total PAHs concentration in the same soil sample was only 5.21 mg/kg (Wang et al, 2015a(Wang et al, , 2015b. These results indicate that NAs in oil spill-affected areas deserve more attention because of the potential toxicological risk they pose to the environment and human health.…”

Section: Introductionmentioning

confidence: 63%

“…High concentrations of NAs are frequently found in petroleum refinery wastewaters (Wang et al, 2013;Misiti et al, 2013), oil sands process-affected water (OSPW) (Rogers et al, 2002;Holowenko et al, 2002;West et al, 2013;Jones et al, 2012), and lixivium from oil sand storage sites in the Athabasca region of Alberta, Canada (Holowenko et al, 2002;Gagne et al, 2013). NAs are also found in coastal sediments (Wan et al, 2014), oil sands tailings (Herman et al, 1994;Holowenko et al, 2002;Armstrong et al, 2010), and oil polluted soils (Wang et al, 2015a(Wang et al, , 2015b. Wan et al (2014) illustrated that NAs concentrations were 50e100 times higher than polycyclic aromatic hydrocarbons (PAHs) concentrations in the same sediment sample after oil spill.…”

Section: Introductionmentioning

confidence: 99%

Transcriptional responses of earthworm (Eisenia fetida) exposed to naphthenic acids in soil

Wang

Cao

Sun

et al. 2015

Environmental Pollution

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“…Moreover, the concentrations of the ∑BapeqBPAHs were also calculated; the value was 430 μg kg −1 in AS, 1411 μg kg −1 in RS, and 936 μg kg −1 in VS. The ∑Bapeq16PAHs levels in the industrial district's soils are higher than those from soils found surrounding a thermal desorption plant in Zhejiang (67.0-479 μg kg −1 ) (Liu et al 2015), and from oilfield soils in Daqing (113 μg kg −1 ), Shengli (168 μg kg −1 ), Xinjiang (94.0 μg kg −1 ), Hebei (212 μg kg −1 ) (Wang et al 2015a). According to the Dutch government, uncontaminated soils that could be considered multi-usage soils should have a ∑Bapeq16PAH level of less than 20.0-50.0 μg kg −1 ( A n n o k k e e 1 9 9 0 ) .…”

Section: Risk Assessment By Bap Equivalent Concentrations (Bapeq)mentioning

confidence: 75%

Distribution, sources, and potential risk of polycyclic aromatic hydrocarbons in soils from an industrial district in Shanxi, China

Jiao

Bian

Chen

et al. 2017

Environ Sci Pollut Res

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Concentration, composition profile, orientation distribution, sources, and potential risks of 16 polycyclic aromatic hydrocarbons (PAHs) were analyzed in 76 surface (0-25 cm) soil samples collected from the Changzhi industrial district in July 2014 using a gas chromatography mass spectrometer (GC-MS QP2010 Ultra) system. The composition patterns of the PAHs were dominated by the presence of four-ring PAHs (average 42.9%), followed by three-ring (average 25.9%), five-ring PAHs (average 25.6%), two-ring PAHs (average 5.03%), and lastly, six-ring PAHs (average 0.641%). Source apportionment of the soil PAHs was also performed by the diagnostic ratios, principal component analysis (PCA), and coefficient of divergence (CD) analysis indicated signatures of PAHs sources (including incineration, coal/wood combustion, and vehicular exhaust emission). The total concentration of 16 PAHs (∑16PAHs) found in the roadsides soils (RS) ranged from 2197 to 25,041 μg kg, with an arithmetic mean value of 12,245 μg kg; followed by the village soils (VS), which ranged from 2059 to 21,240 μg kg, with a mean of 8976 μg kg; and lastly, the agricultural soils (AS), which ranged from 794 to 16,858 μg kg, with a mean of 3456 μg kg. According to the numerical effect-based soils quality guidelines of Maliszewska-Kordybach, the levels of PAHs in the sampled industrial areas range from high to heavy contamination. The values of total benzo[a]pyrene toxicity equivalent values (∑Bapeq16PAHs) in the sample areas ranged from 0.087 to 3611 μg kg with an average of 969 μg kg. According to the soil quality guidelines of Canada, values found in the highest range (100 μg kg), which are equal to those of ∑Bapeq16PAHs found in the industrial area samples, will exert adverse biological effects. The results of this research could potentially be useful for local governments to control toxicity exposure, promote actions to alleviate PAHs contamination, and to manage human health at both work and industrial areas.

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Carcinogenic potential of PAHs in oil-contaminated soils from the main oil fields across China

Cited by 16 publications

References 39 publications

Long-term oil contamination causes similar changes in microbial communities of two distinct soils

Long-term oil contamination causes similar changes in microbial communities of two distinct soils

Transcriptional responses of earthworm (Eisenia fetida) exposed to naphthenic acids in soil

Distribution, sources, and potential risk of polycyclic aromatic hydrocarbons in soils from an industrial district in Shanxi, China

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