Effects of total organic carbon content and leaching water volume on migration behavior of polycyclic aromatic hydrocarbons in soils by column leaching tests

Cai, Ting; Ding, Yongsheng; Zhang, Zhihuan; Wang, Xinwei; Wang, Tieguan; Ren, Yuanyuan; Dong, Yibo

doi:10.1016/j.envpol.2019.112981

Cited by 37 publications

(16 citation statements)

References 43 publications

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“…In plot 6, most heavy PAHs are present only in the lower profile part, which may be caused by cryoturbation processes that are common for this area. Thus, our results confirm the previously drawn conclusion that the low content of organic matter and colloid particles in a soil horizon are the factors that promote the migration of PAHs deep into a profile [49].…”

Section: Soilssupporting

confidence: 92%

Polyarenes Distribution in the Soil-Plant System of Reindeer Pastures in the Polar Urals

et al. 2022

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Humic substances of soils consist of various organic compounds, including polycyclic aromatic hydrocarbons (PAHs). Soil as a fairly stable medium allows the correct use of polyarenes as markers of the humus formation process. Monitoring of the accumulation of PAHs as resistant organic toxicants is also necessary due to their carcinogenic and mutagenic properties. Natural plant resources serve as the feed base of northern reindeer husbandry. In this study, high-performance liquid chromatography in a gradient mode and gas chromatography-mass spectrometry methods were used to estimate the content of PAHs in mountain tundra and meadows of the Polar Urals (Russia). The accumulation of polyarenes in soils on carbonate rocks of the Bolshoi Paipudynsky ridge occurs mainly in the process of soil formation and largely depends on factors such as productivity of plant communities, the composition of standing biomass, the site’s position in relief, the granulometric composition of soils, cryogenesis process and pyrogenesis. According to the set of polyarenes, their number, and ratio, the studied objects were classified into separate groups by discriminant analysis. The most typical representatives of pedogenic origin are naphthalene and phenanthrene. The accumulation features of dibenz[a,h]anthracene and benz[b]-, benz[k]fluoranthene, benz[ghi]perylene, and benz[a]perylene are shown. In mountain tundra landscapes, the characteristics of PAHs can be used to diagnose the intensity and direction of soil formation processes in general and humification in particular.

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Section: Soilssupporting

confidence: 92%

Polyarenes Distribution in the Soil-Plant System of Reindeer Pastures in the Polar Urals

et al. 2022

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“…This implies that in the environment higher dilution of the coal tar in the receiving water will promote the risk of contamination with PAHs. Similar results were found in the study done by [30]. Naphthalene is found to be easily released from the coal tar compared to other PAHs.…”

Section: Effect Of Temperature On the Type Of Pah Released From Coal Tarsupporting

confidence: 90%

Effects of Physico-chemical Parameters and Acid Rain Water on the Mobility of PAHs from Coal Tar

2022

ICSSHE-22 &Amp; ABENS-22 Sept. 20-22, 2022 Barcelona (Spain)

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In this study coal tar from the coking process was exposed to acid rain water at various solid/liquid ratios, temperatures and time. It was found that a ratio of 5/95 suitable for maximum mobilization of PAHs; although there was no consistent trend of the effect temperature, it was however, evident that better mobilization of PAHs was achieved above room temperature (25℃); the maximum mobilization of PAHs was achieved at 45℃. Naphthalene was the most abundant PAH in the leachate while Benzo(a) pyrene which is one of the most toxic PAH was easily mobilized in more dilute solution. It is therefore proven in this study that the extent of mobilization of PAHs from coal tar in receiving water and hence the impact on the environment will depend on the physico-chemical properties of the water; high temperature and dilution of coal tar are most likely to promote the mobilization of PAHs and their dispersion in the environment

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“…The similar result was reported by Cai et al (2019), where in addition put forward that high concentrations of TOC in the surface soil would adsorb PAHs, bringing about a sudden decline of PAHs. However, PAH concentrations in PF exhibited weak correlation with TOC.…”

Section: In Uence Of the Physicochemical Properties Of Soilsupporting

confidence: 85%

“…Physicochemical properties of PAHs are reportedly suitable for characterizing their distribution in various environmental media (Cai et al 2019;Wang et al 2009). To further reveal the factors affecting the distribution and migration of PAHs in these 3 soil pro les, probable related physical and chemical parameters were detected (Fig.…”

Section: In Uence Of the Physicochemical Properties Of Soilmentioning

confidence: 99%

Vertical distribution and sources of PAHs in different agricultural soil profiles: a case study in Jianghan Plain, Central China

Wang

Gong

Zhang

et al. 2021

Preprint

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PAHs are one of the persistent organic pollutants (POPs) and widely distributed in nature. This study aimed to investigate the distribution and origination of polycyclic aromatic hydrocarbons (PAHs) in 3 different agricultural soil profiles (paddy, cotton and rape). The study found that 16 PAHs were all detected in 3 soil profiles, where the concentrations of ∑16PAHs ranged from 122.37-664.13ng/g in surface soil and 24.15-109.76ng/g in bottom soil. Compared to other areas, the concentrations were higher than most plains, but lower than several cities. The ∑16PAHs of naphthalene(Nap) counted the most in nearly every sample. The total concentrations of ∑16PAHs were higher in shallow soil and decreased sharply with the increase of depth, while those were smoothly distributed in paddy field (PF). The results showed that 3 soil profiles were all weakly alkaline (8 < pH < 9), and PAH concentrations in soil were linearly related with total organic carbon (TOC) at different depths except for the PF soil profiles. It was the flooded tillage method in PF that caused the different characteristics of distribution and physicochemical properties. There were high correlation between dissolved organic matters(DOM) and PAH concentrations in cotton field (CF). However, there were no correlations between concentrations of PAHs and other 3 properties (pH, clay miners). By the ratio method, PAHs were revealed mainly derived from combustion, and then petroleum.

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Effects of total organic carbon content and leaching water volume on migration behavior of polycyclic aromatic hydrocarbons in soils by column leaching tests

Cited by 37 publications

References 43 publications

Polyarenes Distribution in the Soil-Plant System of Reindeer Pastures in the Polar Urals

Polyarenes Distribution in the Soil-Plant System of Reindeer Pastures in the Polar Urals

Effects of Physico-chemical Parameters and Acid Rain Water on the Mobility of PAHs from Coal Tar

Vertical distribution and sources of PAHs in different agricultural soil profiles: a case study in Jianghan Plain, Central China

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