Effect of temperature on the sorption and desorption of perfluorooctane sulfonate on humic acid

Jia, Chengxia; You, Chun; Pan, Gang

doi:10.1016/s1001-0742(09)60115-7

Cited by 51 publications

(24 citation statements)

References 33 publications

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“…Indirect effects of warming, such as the disappearance of the water mantle surrounding dissolved solutes leads to increasing disorder, potentially driving endothermic desorption reactions (Ten Hulscher & Cornelissen, 1996). Several studies in the literature have observed endothermic adsorption (e.g., Elshafei et al, 2009;Jia et al, 2010).…”

Section: Temperature Controls On Substrate Availabilitymentioning

confidence: 99%

Temperature and soil organic matter decomposition rates - synthesis of current knowledge and a way forward

et al. 2011

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The response of soil organic matter (OM) decomposition to increasing temperature is a critical aspect of ecosystem responses to global change. The impacts of climate warming on decomposition dynamics have not been resolved due to apparently contradictory results from field and lab experiments, most of which has focused on labile carbon with short turnover times. But the majority of total soil carbon stocks are comprised of organic carbon with turnover times of decades to centuries. Understanding the response of these carbon pools to climate change is essential for forecasting longer-term changes in soil carbon storage. Herein, we briefly synthesize information from recent studies that have been conducted using a wide variety of approaches. In our effort to understand research to-date, we derive a new conceptual model that explicitly identifies the processes controlling soil OM availability for decomposition and allows a more explicit description of the factors regulating OM decomposition under different circumstances. It explicitly defines resistance of soil OM to decomposition as being due either to its chemical conformation (quality) or its physico-chemical protection from decomposition. The former is embodied in the depolymerization process, the latter by adsorption/desorption and aggregate turnover. We hypothesize a strong role for variation in temperature sensitivity as a function of reaction rates for both. We conclude that important advances in understanding the temperature response of the processes that control substrate availability, depolymerization, microbial efficiency, and enzyme production will be needed to predict the fate of soil carbon stocks in a warmer world.

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Section: Temperature Controls On Substrate Availabilitymentioning

confidence: 99%

Temperature and soil organic matter decomposition rates - synthesis of current knowledge and a way forward

et al. 2011

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“…When heating/cooling cycles occur (that is a rule in nature), DOM structure is altered [111] and changes in DOM sorption/desorption capacities can be observed [112]. The temperature dependence of the aforementioned changes were attributed to the dynamic re-arrangement of the water clusters around DOM [113].…”

Section: The Behaviour Of Dissolved Organic Matter (Dom)mentioning

confidence: 99%

Nuclear Magnetic Resonance with Fast Field-Cycling Setup: A Valid Tool for Soil Quality Investigation

Conte

Meo

2020

Agronomy

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Nuclear magnetic resonance (NMR) techniques are largely employed in several fields. As an example, NMR spectroscopy is used to provide structural and conformational information on pure systems, while affording quantitative evaluation on the number of nuclei in a given chemical environment. When dealing with relaxation, NMR allows understanding of molecular dynamics, i.e., the time evolution of molecular motions. The analysis of relaxation times conducted on complex liquid–liquid and solid–liquid mixtures is directly related to the nature of the interactions among the components of the mixture. In the present review paper, the peculiarities of low resolution fast field-cycling (FFC) NMR relaxometry in soil science are reported. In particular, the general aspects of the typical FFC NMR relaxometry experiment are firstly provided. Afterwards, a discussion on the main mathematical models to be used to “read” and interpret experimental data on soils is given. Following this, an overview on the main results in soil science is supplied. Finally, new FFC NMR-based hypotheses on nutrient dynamics in soils are described

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“…When Sormunen et al (2008) studied the desorption and bioavailability of 3,3 0 ,4,4 0 -tetrachlorobiphenyl (PCB 77), they found that the rapid-desorbing fractions and the biota-sediment accumulation factor of PCB 77 decreased with increasing concentration in sediment. Although the desorption resistance for PFOS and PFOA from sediments and humic acid was reported (Pan et al, 2009;Jia et al, 2010), further studies are necessary to assess the concentration-dependent effects on the desorption and bioavailability of PFASs.…”

Section: Uptake and Elimination Kineticsmentioning

confidence: 99%

“…The PFAS concentrations in porewater depend on their soil concentrations and soil properties. It has been reported that organic carbon is the most important parameter dominating PFOS sorption (Higgins and Luthy, 2006;Johnson et al, 2007;Jia et al, 2010). In addition, pH, sand and clay contents play roles in PFOS retention (Higgins and Luthy, 2006;Johnson et al, 2007).…”

Section: Quantification Of the Relationship Between Pfas Accumulationmentioning

confidence: 99%

Bioavailability of perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) in biosolids-amended soils to earthworms (Eisenia fetida)

Wen

Zhang

et al. 2015

Chemosphere

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h i g h l i g h t sBioavailability of PFOS and PFOA by earthworm in biosolids-amended soils was studied. The uptake and elimination kinetics fit a one-compartment first-order kinetic model. PFOS displayed higher k u , lower k e , and longer t ss than those of PFOA. The bioaccumulation factors and t ss decreased with soil concentrations increasing. Soil concentration and OM contents accounted for earthworm bioavailability. a r t i c l e i n f o b s t r a c tThe bioavailability of perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) in seven biosolids-amended soils without any additionally spiking to earthworms (Eisenia fetida) was studied. The uptake and elimination kinetics of PFOS and PFOA fit a one-compartment first-order kinetic model. PFOS displayed higher uptake and lower elimination rate coefficients, and longer time to reach steady-state (t ss ) than those of PFOA. The bioaccumulation factors (BAFs) of PFOS and PFOA ranged 1.54-4.12 and 0.52-1.34 g soil g worm À1, respectively. The BAFs and t ss decreased with increasing concentrations of PFOS and PFOA in soils. Stepwise multiple regression analysis was used to elucidate the bioavailability of PFOS and PFOA. The results showed that the total concentrations of PFOS and PFOA, and organic matter (OM) contents in soils explained 87.2% and 91.3% of the variation in bioavailable PFOS and PFOA, respectively. PFOS and PFOA concentrations exhibited positive influence and OM contents showed the negative influence on the accumulation of PFOS and PFOA in earthworms. Soil pH and clay contents played relatively unimportant role in PFOS and PFOA bioavailability.

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Effect of temperature on the sorption and desorption of perfluorooctane sulfonate on humic acid

Cited by 51 publications

References 33 publications

Temperature and soil organic matter decomposition rates - synthesis of current knowledge and a way forward

Temperature and soil organic matter decomposition rates - synthesis of current knowledge and a way forward

Nuclear Magnetic Resonance with Fast Field-Cycling Setup: A Valid Tool for Soil Quality Investigation

Bioavailability of perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) in biosolids-amended soils to earthworms (Eisenia fetida)

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