Estimation of total flux of polycyclic aromatic hydrocarbons facilitated by methane ebullition into water column from global lake sediments

Sun, Tingting; Li, Wenxuan; Yin, Ke

doi:10.1016/j.watres.2021.117611

Cited by 4 publications

(3 citation statements)

References 85 publications

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“…Therefore, knowledge about the potential of ebullition to reintroduce these materials into the water is vital for understanding sediment-water interactions in rivers, lakes and reservoirs. Sun et al (2021) estimated that ebullition facilitate flux of PAH from lake sediments on a global scale. According to their work this flux could potentially overcompensate (118%) the global deposition of PAHs into lake sediments (Sun et al, 2021).…”

Section: Open Access Edited Bymentioning

confidence: 99%

“…Sun et al (2021) estimated that ebullition facilitate flux of PAH from lake sediments on a global scale. According to their work this flux could potentially overcompensate (118%) the global deposition of PAHs into lake sediments (Sun et al, 2021). Detailed theories and experimental work though are mostly available for describing the interactions of rising gas bubbles with suspended particles in technical applications (i.e., particle scavenging, or stripping), with scarce studies considering natural processes.…”

Section: Open Access Edited Bymentioning

confidence: 99%

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Quantifying bubble-mediated transport by ebullition from aquatic sediments

Schwarz¹,

Marcon

Lorke³

2023

Front. Earth Sci.

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The widespread release of gas bubbles from aquatic sediments (ebullition) has been receiving growing scientific interest because of its globally relevant contribution to methane emissions. Besides being an efficient transport pathway for methane and other gases to the atmosphere, these bubbles have the potential to mobilize resources and pollutants previously buried in the sediment by carrying solutes and particles on their surface. The phenomenon of bubbles transporting substances other than gases is well studied in open water and widely used in technical applications, such as froth flotation or dissolved air floatation. Research on the transport capabilities of natural bubbles forming in, and being released from, aquatic sediments is exceedingly rare. Ebullition resulting from biogenic gas production in sediments is characterized by large spatial and temporal variability and bubble sizes exceed those typically used in technical applications. Here we summarize the current state of research concerning bubble mediated transport (BMT) from aquatic sediments and develop a perspective based on these findings and own experimental results. We present measurements from a shallow reservoir to explore methods to monitor BMT and gather data on ebullition over 1 year. We found consistent bubble size spectra, despite large temporal variations of ebullition fluxes. We highlight some of the inherent difficulties of research in this area and argue that more experiments are needed for improving empirical and mechanistic understanding of BMT.

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Section: Open Access Edited Bymentioning

confidence: 99%

Section: Open Access Edited Bymentioning

confidence: 99%

Quantifying bubble-mediated transport by ebullition from aquatic sediments

Schwarz¹,

Marcon

Lorke³

2023

Front. Earth Sci.

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“…Though enthalpies of vaporization derived by Hanshaw et al attracted more attention than vapor pressures p GLC , there are also examples of their utilization. As can be expected, such data were used for modeling the fate of PAHs in the environment (e.g., Sun et al, Gbeddy et al). They were also used for the development of a vapor pressure group contribution method by Naef and Acree and comparison with vapor pressures obtained via fast DSC and TGA …”

Section: Evaluation Of Literature Cgc Vapor Pressuresmentioning

confidence: 99%

Estimating Vapor Pressure Data from Gas–Liquid Chromatography Retention Times: Analysis of Multiple Reference Approaches, Review of Prior Applications, and Outlook

et al. 2022

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Reliable methods for determining the vapor pressures of organic materials are of increasing importance as a tool for predicting the behavior and fate of chemicals that are introduced into the environment. In the present work, we analyze the method that relates the gas–liquid chromatography (GLC) retention data, namely, the retention factors (k) of selected organic compounds with their vapor pressures (p 0) using multiple reference standards. Temperature-dependent k values of test chemicals and an adequate number y of reference standard chemicals having directly measured vapor pressure values at temperatures corresponding to GLC measurements are required to apply this method (GLC-RTyS). Retention data of 49 test compounds including a series of alkanes, alkanols, alkyl benzenes, phenols, some (hydro)naphthalene derivatives, and menthol determined on a low-polar dimethylpolysiloxane (HP-1) column at a temperature range from 353 K to (403 or 423) K were used for method validation. We present a first systematic analysis aimed at examining whether and to what extent the selection of experimental conditions might influence/improve the results. Furthermore, we present a review of an alternative multireference correlation gas chromatographic (CGC) method that employs significant extrapolations and is based on the use of adjusted retention time t′ instead of k in order to reveal uncertainties inherent in routine application of this method.

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The greenhouse effect of antibiotics: The influence pathways of antibiotics on methane release from freshwater sediment

Zhang

Wang

2023

Environment International

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Estimation of total flux of polycyclic aromatic hydrocarbons facilitated by methane ebullition into water column from global lake sediments

Cited by 4 publications

References 85 publications

Quantifying bubble-mediated transport by ebullition from aquatic sediments

Quantifying bubble-mediated transport by ebullition from aquatic sediments

Estimating Vapor Pressure Data from Gas–Liquid Chromatography Retention Times: Analysis of Multiple Reference Approaches, Review of Prior Applications, and Outlook

The greenhouse effect of antibiotics: The influence pathways of antibiotics on methane release from freshwater sediment

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