The emerging source of polycyclic aromatic hydrocarbons from mining in the Tibetan Plateau: Distributions and contributions in background soils

Li, Jun; Yuan, Guo‐Li; Li, Ping; Sun, Yong; Yu, Hong-Hui; Wang, Genhou

doi:10.1016/j.scitotenv.2017.01.146

Cited by 21 publications

(4 citation statements)

References 46 publications

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“…29 Meanwhile, mining activity has been considered as an emerging source of PAHs. 30 Thus, we focus on the aromatic contaminants including PAHs, PAEs, and other aromatic contaminants in the following discussion.…”

Section: ■ Resultsmentioning

confidence: 99%

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Characterization of Mining-Related Aromatic Contaminants in Active and Abandoned Metal(loid) Tailings Ponds

Zhang

Wang

Hudson‐Edwards

et al. 2020

Environ. Sci. Technol.

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This study reports on the compositional diversity of organic compounds in metal(loid)-bearing tailings samples from both active and abandoned tailings ponds. Tailings samples were qualitatively analyzed by comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry (GC × GC-TOFMS). In addition, the priority PAHs ( 16), PAEs (6), and phenols (2) were quantitatively analyzed using gas chromatography−mass spectrometry (GC-MS). We attribute the presence of some of aromatic organics in studied tailings ponds to particular sources. Mineral floatation reagents are likely the major sources of small-ring aromatics in tailings ponds, and products from metallurgical processing and burning of fossil fuels in the mining area or further afield are also possible contributors and might be the main source of large-ring aromatics. We found that tailings ponds abandoned for decades can still have organics concentrations at levels of concern. Large-ring aromatics are generally more toxic than other contaminants, and these were more abundant in abandoned tailings ponds. This suggests that these large-ring organics do not readily decompose or biodegrade into less toxic byproducts, as do volatiles and many other organic compounds. Our aromatic contaminants database provides an important starting point for researchers to investigate and compare similar contaminants that might be also present in other tailings ponds and emphasizes the necessity of considering their transformations over time.

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Section: ■ Resultsmentioning

confidence: 99%

“…Some aromatic compounds, such as PAHs, are toxic, cancerogenic, mutagenic, and ubiquitous environmental contaminants of great concern . Meanwhile, mining activity has been considered as an emerging source of PAHs . Thus, we focus on the aromatic contaminants including PAHs, PAEs, and other aromatic contaminants in the following discussion.…”

Section: Resultsmentioning

confidence: 99%

Characterization of Mining-Related Aromatic Contaminants in Active and Abandoned Metal(loid) Tailings Ponds

Zhang

Wang

Hudson‐Edwards

et al. 2020

Environ. Sci. Technol.

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“…Polycyclic aromatic hydrocarbons (PAHs) mainly refer to a group of compounds that are widely distributed in the water, air and soil. 1–4 PAHs can have toxic effects on the liver, 5 and also contribute to breast cancer, gastrointestinal diseases and lung cancer. 6 Currently, 16 kinds of PAHs are listed as pollutants by the U.S. Environmental Protection Agency (USEPA) and have been widely studied, 7 which are naphthalene (NaP), acenaphthylene (ACY), acenaphthene (ACE), fluorene (FL), phenanthrene (PHE), anthracene (ANT), fluoranthene (FLA), pyrene (PYR), benzo(a)anthracene (BaA), chrysene (CHR), benzo(b)fluoranthene (BbF), benzo(k)fluoranthene (BkF), benzo(a)pyrene (BaP), dibenzo(a,h)anthracene (DahA), benzo(g,hi)-perylene (BghiP), and indeno(1,2,3-cd)pyrene (IcdP).…”

Section: Introductionmentioning

confidence: 99%

A prediction model of polycyclic aromatic hydrocarbon quarterly emissions based on GDP from a government policy perspective

Jing

Bai

Chen

et al. 2021

Indoor and Built Environment

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Polycyclic aromatic hydrocarbons (PAHs) are a kind of carcinogenic, teratogenic and mutagenic pollutants that exist widely. In this study, a quarterly emission inventory of 16 PAHs listed as the US EPA priority pollutants was established by using the emission factor (EF) method. The results showed that the distribution of PAHs in different industries varied greatly with different year and quarter. The main characteristics of PAHs seasonal emission are that Q1 emission is the most and Q4 emission is the least. Among them, naphthalene and phenanthrene are the most important compounds. There are significant differences in PAHs emissions from different sources. Traffic and civil use emissions are the main sources. For example, in 2019, traffic emissions accounted for 20.9% and civil use emissions accounted for 78.3% of the total emissions. Then, a linear multiple regression model was established to predict the quarterly emission of PAHs. A vector autoregressive (VAR) approach was applied to analyse the correlation between the gross domestic product (GDP) and other macroeconomic parameters. This study could be used as a guide to provide recommendations for government policy and macro-control efforts.

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“…La eficiencia de la biorremediación de los hidrocarburos puede ser inhibido por la baja biodisponibilidad y toxicidad, la no uniforme distribución espacial de microorganismos y contaminantes, la baja capacidad del metabolismo microbiano, etc. (Li et al, 2017).…”

Section: Introductionunclassified

La intensidad eléctrica y la biorremediación de Aspergillus niger en suelos contaminados con hexadecano, en Loreto, Perú

Vargas¹,

Grández²,

Pérez³

et al. 2020

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La conservación del medio ambiente es un tema de interés mundial para aminorar los efectos del cambio climático. Es así que la biorremediación es una técnica que se está desarrollano actualmente por su efectividad y bajo costos. En el presente estudio se determinó la electrobiodegradabilidad del hexadecano empleando Aspergillus niger inmovilizado. Se aisló el Aspergillus niger de un suelo contaminado con petróleo y se identificó por su morfología macroscópica y microscópica. El soporte fue un suelo estéril tipo franco-arenoso, el cual fue contaminado con 180 mg de hexadecano (HXD)/gramo de suelo. El cultivo de Aspergillus niger se reactivó en agar papa dextrosa y las esporas se cultivaron en agua destilada más Tween 80 e inmovilizaron en alginato de calcio. Los ensayos se realizaron a temperatura ambiente (30 ± 2°C), las intensidades de corriente eléctrica usadas fueron de 5 mA, 10 mA y 15 mA, durante un periodo de 12 días. El hexadecano residual se determinó por cromatografía de gases. Se concluye que la intensidad de corriente eléctrica óptima en el rendimiento de disminución de hexadecano por esporas de Aspergillus niger inmovilizado en alginato de calcio es 10 mA, con un valor de 14975,76 mg/kg por día. Se logró electrobiodegradar el 99,83% de hexadecano.

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The emerging source of polycyclic aromatic hydrocarbons from mining in the Tibetan Plateau: Distributions and contributions in background soils

Cited by 21 publications

References 46 publications

Characterization of Mining-Related Aromatic Contaminants in Active and Abandoned Metal(loid) Tailings Ponds

Characterization of Mining-Related Aromatic Contaminants in Active and Abandoned Metal(loid) Tailings Ponds

A prediction model of polycyclic aromatic hydrocarbon quarterly emissions based on GDP from a government policy perspective

La intensidad eléctrica y la biorremediación de Aspergillus niger en suelos contaminados con hexadecano, en Loreto, Perú

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