Polycyclic aromatic hydrocarbons in soils of Beijing and Tianjin region: Vertical distribution, correlation with TOC and transport mechanism

He, Fangliang; Zhang, Zhihuan; Wan, Youchuan; Liu, Song; Wang, Liang; Bu, Qingwei

doi:10.1016/s1001-0742(08)62323-2

Cited by 61 publications

(27 citation statements)

References 44 publications

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“…PAHs accumulate with higher levels in urban area and in areas that are irrigated with wastewater. (5) Their concentration preserves initially better in the upper soil layer and decrease considerably with increasing depth (6). High molecular weight PAHs transported by particulates might be the predominant source in soil.…”

Section: Introductionmentioning

confidence: 96%

Polycyclic Aromatic Hydrocarbons and Nitropolycyclic Aromatic Hydrocarbons in Atmospheric Particles and Soil at a Traffic Site in Hanoi, Vietnam

Pham

Tang

Toriba

et al. 2015

Polycyclic Aromatic Compounds

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The concentrations of polycyclic aromatic hydrocarbons (PAHs) and nitropolycyclic aromatic hydrocarbons (NPAHs) in total suspended particulates (TSP) and soil were measured at a traffic site in Hanoi, a typical motorcycle city of Vietnam. TSP was collected using high-volume air sampler on Pallflex 2500QAT-UP membrane filters. PAHs and NPAHs were analyzed by high-performance liquid chromatography (HPLC) using fluorescence and chemiluminescence detectors, respectively. The average concentrations of total 10 PAHs and 10 NPAHs in soil varied from 3.4-43.7 ng g −1 and from 112-780 pg g −1 dry weight, respectively, which were much lower than those in TSP. The results showed that large part of the higher molecular weight PAHs in soil, especially benzo[ghi]perylene and benzo[b]fluoranthene came from the atmosphere. However, NPAHs profile showed a different pattern. 3-nitroperylene and 6-nitrochrysene were the most abundant NPAHs in soil, followed by 1-nitropyrene and 6-nitrobenzo[a]pyrene. The fate of NPAHs in soil varied depending on soil properties and chemical structure of NPAHs. The finding that the [NPAH]/[PAH] concentration ratios in soil were different from those in TSP could be due to bio-degradation and/or secondary formation of NPAHs in soil, depending on NPAHs properties.

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Section: Introductionmentioning

confidence: 96%

Polycyclic Aromatic Hydrocarbons and Nitropolycyclic Aromatic Hydrocarbons in Atmospheric Particles and Soil at a Traffic Site in Hanoi, Vietnam

Pham

Tang

Toriba

et al. 2015

Polycyclic Aromatic Compounds

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“…The ratios for Ph/An and Fl/Py are commonly used to distinguish between petrogenic and pyrogenic sources. Ph/An > 10, Chr/BaA < 1, LMW/HMW > 1, and Flu/Py <1 indicate that PAHs have petrogenic origins (Chen et al 2012;Bouloubassi et al 2012;Ma et al 2005;He et al 2009). The ratios for the 83 sampling points at depth 1 and depth 2 were calculated and then interpolated in Fig.…”

Section: Spatial Variabilitymentioning

confidence: 99%

“…Polycyclic aromatic hydrocarbons (PAHs) are distributed across diverse environmental matrices, including soil (He et al 2009;Fernández et al 2000;Krauss et al 2000;Gocht et al 2007). Industrialization has also resulted in widespread pollution of soil (Telysheva et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Monitoring of polycyclic aromatic hydrocarbons on agricultural lands surrounding Tehran oil refinery

Bayat

Hashemi

Khoshbakht

et al. 2015

Environ Monit Assess

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Soil samples at two depths were collected and analyzed to determine the concentrations of 16 polycyclic aromatic hydrocarbons (PAHs), organic carbon, and soil pH. The Σ16PAHs were 0.13 to 3.92 mg kg(-1) at depth 1 and 0.21 to 50.32 mg kg(-1)at depth 2. The averages of the PAH compounds indicate that the area is contaminated with oil, and this pollution was greater at depth 2. Interpolation maps showed that the southern region, especially at depth 2, has been contaminated more by anthropogenic activity. The diagnostic ratios indicate several sources of pollution of the agricultural soil. A comparison of average PAHs and standard values revealed that higher molecular weight compounds in the topsoil (InP and BghiP) and subsoil (BaA, BkF, BaP, DBA, and BghiP) exceed standard values for farmland. The pH interpolation map for both depths showed that most of the area has alkaline soil from long-term irrigation with untreated urban wastewater.

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“…The PAHs found in atmospheric and terrestrial environment however came primarily from anthropogenic emission sources due to incompletion combustions of fuels in industrial processing, power generations, waste incineration, vehicle emissions, cooking and space heating, and wood and biomass burnings (Heywood et al, 2006;Liu et al, 2006). Once released, the airborne PAHs would be suspended for a long time and subject to long distance transportation (Sun et al, 2009) and eventually 90% of the PAHs would be deposited on soil surfaces in and surrounding population centers (Gocht et al, 2007;He et al, 2009). The strong adsorption by soil organic matter would inhibit their degradation, leaching, and volatilization losses (Yu et al, 2006) resulting in accumulation of PAHs in top soils (Gocht et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Mass balance-based regression modeling of PAHs accumulation in urban soils, role of urban development

Peng

Wang

Chen

et al. 2015

Environmental Pollution

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a b s t r a c tWe investigated the polycyclic aromatic hydrocarbons (PAHs) contents in 68 soils samples collected at housing developments that represent different length of development periods across Beijing. Based on the data, we derived a mass balanced mathematical model to simulate the dynamics of PAH accumulations in urban soils as affected by the urban developments. The key parameters were estimated by fitting the modified mass balance model to the data of PAH concentrations vs. building age of the sampling green area. The total PAH concentrations would increase from the baseline of 267 ng g À1 to 3631 ng g À1 during the period of 1978e2048. It showed that the dynamic changes in the rates of accumulations of light and heavy PAH species were related to the shifting of sources of fuels, combustion efficiencies, and amounts of energy consumed during the course of development.

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Polycyclic aromatic hydrocarbons in soils of Beijing and Tianjin region: Vertical distribution, correlation with TOC and transport mechanism

Cited by 61 publications

References 44 publications

Polycyclic Aromatic Hydrocarbons and Nitropolycyclic Aromatic Hydrocarbons in Atmospheric Particles and Soil at a Traffic Site in Hanoi, Vietnam

Polycyclic Aromatic Hydrocarbons and Nitropolycyclic Aromatic Hydrocarbons in Atmospheric Particles and Soil at a Traffic Site in Hanoi, Vietnam

Monitoring of polycyclic aromatic hydrocarbons on agricultural lands surrounding Tehran oil refinery

Mass balance-based regression modeling of PAHs accumulation in urban soils, role of urban development

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