Polycyclic aromatic hydrocarbons in the soil profiles (0–100 cm) from the industrial district of a large open-pit coal mine, China

Liu, Xiaoyang; Bai, Zhongke; Yu, Qinfei; Cao, Yingui; Zhou, Wei

doi:10.1039/c7ra02484c

Cited by 22 publications

(10 citation statements)

References 61 publications

(54 reference statements)

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“…The high-temperature process (combustion) with the total index greater than 4 was generally thought to be the source of PAHs. Otherwise, petroleum products were considered to be the main source of PAHs …”

Section: Resultsmentioning

confidence: 99%

Distribution of Polycyclic Aromatic Hydrocarbons in Coal Gangue and Emitted Gas with Low-Temperature Spontaneous Combustion in Situ

2018

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Five coal gangue samples from the Duerping Coal Mine in Shanxi, China, subjected to low-temperature combustion and their emitted gas samples were collected in situ at the combustion temperatures of 23, 33, 49, 57, and 70 °C. The concentrations of 16 polycyclic aromatic hydrocarbons (PAHs) in these samples were determined by high-performance liquid chromatography; these concentrations indicated that with decreasing combustion temperature, ∑ 16 PAHs in coal gangue tend to decrease, whereas ∑ 16 PAHs in emitted gas tend to increase. With the decrease of combustion temperature, the concentrations of Σ 6 LPAHs in coal gangue and emitted gas decreased, whereas the concentrations of Σ 10 HPAHs increased; therefore, the overall toxicity and carcinogenicity increased. The total index of PAHs in the samples ranged from 20.10 to 22.43 with a mean of 21.81. The ratio of Flua/(Flua + Pyr) ranged from 0.34 to 0.97 with a mean of 0.76. Finally, the proportions of Ant/(Ant + Phe), BaA/(BaA + Chr), and InP/(InP + Bghi) were approximately 1. These ratios and the total index of the PAHs could be used to identify the source of PAHs in the atmosphere and soil.

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Section: Resultsmentioning

confidence: 99%

Distribution of Polycyclic Aromatic Hydrocarbons in Coal Gangue and Emitted Gas with Low-Temperature Spontaneous Combustion in Situ

2018

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“…Univariate IDW interpolation is used widely by earth scientists in geochemistry. [55][56][57][58][59] The character of eqn (4) is the same as the basic principle of IDW: 60 the calculated bond valences S i from smaller values of resolution A i such as 3U7Q have a greater inuence on the weighted average valence than those from larger values of resolution, such as 1M34. S w in eqn ( 5) is the weighted average of the calculated valences S i of different Fe atoms from all analyzed P N clusters.…”

Section: Calculation Methodsmentioning

confidence: 99%

Statistical analysis of P^N clusters in Mo/VFe protein crystals using a bond valence method toward their electronic structures

2022

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“…Third, the migration, transformation, and accumulation processes of PAHs in the entire environmental system are relatively complicated. China covers a large territory with complex soil types, so the geographical positions, terrains, climatic, light, and humidity conditions in different regions were significantly different [110][111][112]. Besides, the energy structure was also very different.…”

Section: Limitations and Uncertainty Analysismentioning

confidence: 99%

Assessing the Spatial Distribution of Soil PAHs and their Relationship with Anthropogenic Activities at a National Scale

Zeng

Ren

et al. 2019

IJERPH

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Soil polycyclic aromatic hydrocarbon (PAH) pollution is a major concern due to its negative impact on soil quality around the world. In China, accurate data on soil PAHs and information on the relationship with anthropogenic activities are limited. In this study, about 30,800 samples from 1833 soil sample sites were reviewed from 306 published reports to build a soil PAHs database. Based on the data obtained, the results demonstrated that 24.11% of surface soils in China are heavily contaminated. Meanwhile, the concentration of soil PAHs varied, in the order of independent mining and industrial areas (IMIA) > urban areas > suburban areas > rural areas, and the spatial distribution in China demonstrated a descending trend from north to south. Moreover, the characteristic ratio and PCA-MLR (principal component analysis-multiple linear regression) analysis demonstrated that coal combustion and vehicular exhaust emissions were the main sources of soil PAH pollution in China. On the other hand, provincial total Σ16PAHs in surface soil were significantly correlated with the per square kilometer GDP (gross domestic product) of industrial land, the per capita GDP, as well as the production and consumption of energy. These results indicate that anthropogenic factors have greatly affected the levels of soil PAHs in China. This study improves our understanding on the status and sources of soil PAH contamination in China, thereby facilitating the implementation of strategies of prevention, control, and remediation of soils.

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Polycyclic aromatic hydrocarbons in the soil profiles (0–100 cm) from the industrial district of a large open-pit coal mine, China

Abstract: Mining and industrial activities are the primary sources of soil pollution in the open-pit coal mine.

Cited by 22 publications

References 61 publications

Distribution of Polycyclic Aromatic Hydrocarbons in Coal Gangue and Emitted Gas with Low-Temperature Spontaneous Combustion in Situ

Distribution of Polycyclic Aromatic Hydrocarbons in Coal Gangue and Emitted Gas with Low-Temperature Spontaneous Combustion in Situ

Statistical analysis of P^N clusters in Mo/VFe protein crystals using a bond valence method toward their electronic structures

Assessing the Spatial Distribution of Soil PAHs and their Relationship with Anthropogenic Activities at a National Scale

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Polycyclic aromatic hydrocarbons in the soil profiles (0–100 cm) from the industrial district of a large open-pit coal mine, China

Abstract: Mining and industrial activities are the primary sources of soil pollution in the open-pit coal mine.

Cited by 22 publications

References 61 publications

Distribution of Polycyclic Aromatic Hydrocarbons in Coal Gangue and Emitted Gas with Low-Temperature Spontaneous Combustion in Situ

Distribution of Polycyclic Aromatic Hydrocarbons in Coal Gangue and Emitted Gas with Low-Temperature Spontaneous Combustion in Situ

Statistical analysis of PN clusters in Mo/VFe protein crystals using a bond valence method toward their electronic structures

Assessing the Spatial Distribution of Soil PAHs and their Relationship with Anthropogenic Activities at a National Scale

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Statistical analysis of P^N clusters in Mo/VFe protein crystals using a bond valence method toward their electronic structures