Distribution, compositional pattern and sources of polycyclic aromatic hydrocarbons in urban soils of an industrial city, Lanzhou, China

Jiang, Yufeng; Uwamungu, Jean Yves; Sun, Hang; Hu, Xuefei; Zhan, Hongbing; Wu, Yingqin

doi:10.1016/j.ecoenv.2015.12.037

Cited by 101 publications

(41 citation statements)

References 59 publications

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“…Poor mobility and degradation result in long-term retention of pollutants in soil. Accidental ingestion, dermal contact, and inhalation were the direct ways for PAHs enriched in soil to enter the human body [ 2 ]. At the same time, they could also be indirectly ingested through the food chain [ 3 ], resulting in endocrine disorders and even cancer [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

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Distribution of the Soil PAHs and Health Risk Influenced by Coal Usage Processes in Taiyuan City, Northern China

Cheng

Cui

et al. 2020

IJERPH

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The quality of urban soil is closely related to the safety of public places and the guarantee of food quality. This study investigated the level, distribution, source, and carcinogenic risk of 16 U.S. EPA (Environmental Protection Agency) priority polycyclic aromatic hydrocarbons (PAHs) in urban, agricultural, and montane soil in Taiyuan. The ∑16PAHs level varied from 104.78 to 6594.63 ng g−1 with a mean of 922.93 ng g−1, and 47.73% of the soil samples were severely contaminated, with a concentration higher than 600 ng g−1. PAHs with higher molecular weight (≥4 rings) were dominant in PAHs profiles accounting for 80.92%. In the spatial distribution of PAHs, hotspots of ∑16 PAHs were observed near the industries, indicating pollutants emitted by the industries directly affect the surrounding soil quality. The sources identified by positive matrix factorization (PMF) indicated: coal combustion (40.77%), vehicle exhausts (32.94%), biomass combustion (14.89%), and coking source (11.40%). Coal-related sources (coal and coking sources) were the major contributors (52.17%) to PAHs and carcinogenic risk (46.48%) assessed by BaP toxic equivalent concentration in total soils. Therefore, the extensive usage of coal was the leading factor for PAH pollution and health risk in Taiyuan soil.

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Section: Introductionmentioning

confidence: 99%

“…PAHs are a class of the notorious organic pollutants with toxicity, carcinogenicity, and mutagenicity, which threaten human health and have attracted widespread public attention [ 2 , 3 , 5 , 6 , 7 ]. Coal usage was one of the principal sources of PAHs in China [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Distribution of the Soil PAHs and Health Risk Influenced by Coal Usage Processes in Taiyuan City, Northern China

Cheng

Cui

et al. 2020

IJERPH

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“…Generally, they are produced from incomplete combustion of organic materials, fossil fuels, petroleum product spillage and various domestic and industrial activities [2,3]. Once emitted, PAHs can be widely dispersed in air, water, soil and sediment.…”

Section: Introductionmentioning

confidence: 99%

Concentration and Potential Ecological Risk of PAHs in Different Layers of Soil in the Petroleum-Contaminated Areas of the Loess Plateau, China

Wang

Ma²,

Hao³

et al. 2018

IJERPH

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The three most representative areas of petroleum pollution on the Loess Plateau are the research subjects of this study. In this study, 16 priority polycyclic aromatic hydrocarbons (PAHs) were determined by the QuEChERS method combined with gas chromatography-tandem mass spectrometry (GC-MS/MS). The total concentrations of ∑16PAHs in top layer soils (0–10 cm), middle layer soils (10–30 cm), and bottom layer soils (30–50 cm) ranged from 1010.67 to 18,068.80, 495.85 to 9868.56 and 213.16 to 12,552.53 μg/kg, with an average of 5502.44, 2296.94 and 2203.88 μg/kg, respectively. The 3-ring and 4-ring PAHs were the most prominent components in all soil samples. Meanwhile, the average value of ∑16PAHs decreased with the depth, from 5502.44 μg/kg (0–10 cm) to 2203.88 μg/kg (30–50 cm). The PAHs levels in the studied soils were heavily polluted (over 1000 μg/kg) according to the Soils Quality Guidelines and 95% of PAHs come from petroleum sources. Moreover, the total of PAHs in petroleum-contaminated soils was assigned a high ecological risk level. Toxic equivalency quantities (TEQs) indicated that PAHs in petroleum-contaminated soils presented relatively high toxicity.

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“…The relationship between general soil properties and pollutants was presented in many previous studies. pH and organic matter could alter heavy metal mobility 46,47 ; PAHs, PCBs and PBDEs were tightly related to organic carbon 48,49 . Thus, it was foreseeable that the co-effects being detected.…”

Section: Discussionmentioning

confidence: 99%

The influence of e-waste recycling on the molecular ecological network of soil microbial communities in Pakistan and China

Jiang

Cheng

Zhang

et al. 2017

Environmental Pollution

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Primitive electronic waste (e-waste) recycling releases large amounts of organic pollutants and heavy metals into the environment. As crucial moderators of geochemical cycling processes and pollutant remediation, soil microbes may be affected by these contaminants. We collected soil samples heavily contaminated by e-waste recycling in China and Pakistan, and analyzed the indigenous microbial communities. The results of this work revealed that the microbial community composition and diversity, at both whole and core community levels, were affected significantly by polycyclic aromatic hydrocarbons (PAHs), polybrominated diphenyl ethers (PBDEs) and heavy metals (e.g., Cu, Zn, and Pb). The geographical distance showed limited impacts on microbial communities compared with geochemical factors. The constructed ecological network of soil microbial communities illustrated microbial co-occurrence, competition and antagonism across soils, revealing the response of microbes to soil properties and pollutants. Two of the three main modules constructed with core operational taxonomic units (OTUs) were sensitive to nutrition (total organic carbon and total nitrogen) and pollutants. Five key OTUs assigned to Acidobacteria, Proteobacteria, and Nitrospirae in ecological network were identified. This is the first study to report the effects of e-waste pollutants on soil microbial network, providing a deeper understanding of the ecological influence of crude e-waste recycling activities on soil ecological functions.

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Distribution, compositional pattern and sources of polycyclic aromatic hydrocarbons in urban soils of an industrial city, Lanzhou, China

Cited by 101 publications

References 59 publications

Distribution of the Soil PAHs and Health Risk Influenced by Coal Usage Processes in Taiyuan City, Northern China

Distribution of the Soil PAHs and Health Risk Influenced by Coal Usage Processes in Taiyuan City, Northern China

Concentration and Potential Ecological Risk of PAHs in Different Layers of Soil in the Petroleum-Contaminated Areas of the Loess Plateau, China

The influence of e-waste recycling on the molecular ecological network of soil microbial communities in Pakistan and China

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