Seasonal atmospheric deposition and air–sea gas exchange of polycyclic aromatic hydrocarbons over the Yangtze River Estuary, East China Sea: Implications for source–sink processes

Jiang, Youlu; Lin, Tian; Wu, Ziqian; Li, Yuanyuan; Li, Zhongxia; Guo, Zhigang; Yao, Xiaohong

doi:10.1016/j.atmosenv.2018.01.031

Cited by 37 publications

(20 citation statements)

References 72 publications

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“…The similar production mechanism shared by BC and PAHs makes it reasonable to compare their budgets. The PAHs budget in the coastal ECS showed that, as for the input pathways, atmospheric deposition and riverine discharge accounted for~7% (~17 t/yr over an area of 0.8 × 10 5 km 2 ) and~93% (~243 t/yr) of the total USEPA 16 priority PAHs influx, respectively (Lin et al, 2013;Jiang et al, 2018), which matched well with the present BC input patterns. Despite their similar input patterns, however, the ultimate retention of PAHs in the sediments (~58%) was significantly lower than that of BC (~94%) (Lin et al, 2013;Jiang et al, 2018).…”

Section: A Preliminary Constrained Bc Budget In the Estuarine-inner Ssupporting

confidence: 63%

“…The PAHs budget in the coastal ECS showed that, as for the input pathways, atmospheric deposition and riverine discharge accounted for~7% (~17 t/yr over an area of 0.8 × 10 5 km 2 ) and~93% (~243 t/yr) of the total USEPA 16 priority PAHs influx, respectively (Lin et al, 2013;Jiang et al, 2018), which matched well with the present BC input patterns. Despite their similar input patterns, however, the ultimate retention of PAHs in the sediments (~58%) was significantly lower than that of BC (~94%) (Lin et al, 2013;Jiang et al, 2018). The selective release of low molecular weight (LMW) PAHs, such as naphthalene, fluorine, and phenanthrene, from bottom sediments to overlying water due to the resuspension triggered by the strong winter East Asian monsoon has been demonstrated to be a key sedimentary PAHs loss process in this area (Lin et al, 2013).…”

Section: A Preliminary Constrained Bc Budget In the Estuarine-inner Ssupporting

confidence: 63%

“…It is unquestionable that large quantities of anthropogenic substances, like BC, will pour into the ECS via riverine discharge. In addition, the coastal ECS is located in the transport pathway of Asian continental outflow (Wang et al, 2015;Jiang et al, 2018), and there are several booming ports at the ECS coast (Liu et al, 2017b). As an example, the Shanghai Port and Ningbo-Zhoushan Port are now ports with the world's largest container throughput and cargo throughput, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Large-river dominated black carbon flux and budget: A case study of the estuarine-inner shelf of East China Sea, China

Fang

Chen

et al. 2019

Science of The Total Environment

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Section: A Preliminary Constrained Bc Budget In the Estuarine-inner Ssupporting

confidence: 63%

Section: A Preliminary Constrained Bc Budget In the Estuarine-inner Ssupporting

confidence: 63%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Large-river dominated black carbon flux and budget: A case study of the estuarine-inner shelf of East China Sea, China

Fang

Chen

et al. 2019

Science of The Total Environment

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“…Those compounds have great environmental hazards such as carcinogenesis, mutagenicity, and distortion, which has been significantly released into the environment with human activities [2][3][4][5]. The adsorption onto sediment is one of the main retention behaviors of PAHs in the environment because of its high hydrophobicity [6][7][8]. And this behavior could affect by salinity and the organic matter of the ambient soil or sediment solution environment.…”

Section: Introductionmentioning

confidence: 99%

Effect of Anion Surfactants on the Adsorption of Polycyclic Aromatic Hydrocarbons on Sediment under Estuarine Mix Conditions

Qian¹,

Li²,

Yao³

et al. 2020

Pol. J. Environ. Stud.

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We investigated the adsorption of phenanthrene (PHE) onto estuarine sediment with varied salinity and concentrations of anionic surfactant (sodium dodecyl benzene sulfonate, SDBS). It is a critical step for better understanding of the migration of polycyclic aromatic hydrocarbon (PAH) pollutants to seawater. The concentration of PHE in the experimental system was detected by a fluorescence spectrophotometer and the results were expressed by partition coefficient (in terms of K d ). It found that the salinity promoted and the SDBS inhibit the adsorption of PHE onto sediment in a single system. The combination effect of SDBS and salinity enhance this adsorption behavior but varied significantly with the ratio of salinity to surfactant. It is a confirmed fact that the mobility of phenanthrene in water increased with the combination of the salinity and SDBS. It would lead to the pollution of PHE change from point model to mobility model and increase its flux into the sea. However, the mechanism of those adsorption behaviors is unclear and may relate to the interactions between sediment and SDBS, SDBS and salinity, and sediments and salts, which need further study.

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“…A part of BaP 2 of 11 in the atmosphere may enter into aquatic and terrestrial ecosystems under the influence of precipitation. Thus, it can be seen that wet deposition is an important removal mechanism of atmospheric BaP [17][18][19][20]. However, the detailed relational mechanism remains uncertain owing to the complexity of affecting factors.…”

Section: Introductionmentioning

confidence: 99%

Assessing the Wet Deposition Mechanism of Benzo(a)pyrene in the Atmosphere by MF-DCCA

et al. 2019

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Based on the 19 year observation from 1998 to 2016 at the Tsuan Wan and Central/Western District monitoring stations in Hong Kong, the aim of this paper was to assess the wet deposition pathway of Benzo(a)pyrene (BaP) on a large time-scale. In order to achieve this goal, multi-fractal detrended cross-correlation analysis (MF-DCCA) was used to characterize the long-term cross-correlations behaviors and multi-fractal temporal scaling properties between BaP (or PM2.5) and precipitation. The results showed that the relationships between BaP and precipitation (or PM2.5) displayed long-term cross-correlation at the time-scale ranging from one month to one year; no cross-correlation between each other was observed in longer temporal scaling regimes (greater than one year). These results correspond to the atmospheric circulation of the Asian monsoon system and are explained in detail. Similar dynamic processes of the wet deposition of BaP and PM2.5 suggested that the main removal process of atmospheric BaP was rainfall deposits of PM2.5-bound BaP. Furthermore, cross-correlations between BaP (or PM2.5) and precipitation at the long time-scale have a multi-fractal nature and long-term persistent power-law decaying behavior. The temporal evolutions of the multi-fractality were investigated by the approach of a sliding window. Based on the evolution curves of multi-fractal parameters, the wet deposition pathway of PM2.5-bound BaP is discussed. Finally, the contribution degree of wet deposition to PM2.5-bound BaP was derived from the coefficient of determination. It was demonstrated that about 45% and 60% of atmospheric BaP removal can be attributed to the wet deposition pathway of PM2.5-bound BaP for the Tsuan Wan and Central/Western District areas, respectively. The findings in this paper are of great significance for further study on the removal mechanism of atmospheric BaP in the future. The MF-DCCA method provides a novel approach to assessing the geochemical cycle dynamics of BaP.

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Seasonal atmospheric deposition and air–sea gas exchange of polycyclic aromatic hydrocarbons over the Yangtze River Estuary, East China Sea: Implications for source–sink processes

Cited by 37 publications

References 72 publications

Large-river dominated black carbon flux and budget: A case study of the estuarine-inner shelf of East China Sea, China

Large-river dominated black carbon flux and budget: A case study of the estuarine-inner shelf of East China Sea, China

Effect of Anion Surfactants on the Adsorption of Polycyclic Aromatic Hydrocarbons on Sediment under Estuarine Mix Conditions

Assessing the Wet Deposition Mechanism of Benzo(a)pyrene in the Atmosphere by MF-DCCA

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