Effect of metals on the adsorption and extractability of 14C-phenanthrene in soils

Saison, Carine; Perrin-Ganier, Corinne; Amellal, Samira; Morel, Jean-Louis; Schiavon, Michel

doi:10.1016/j.chemosphere.2003.10.059

Cited by 61 publications

(34 citation statements)

References 23 publications

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“…It is suggested that the metallic cations could change the structure of FA and HA through complexation with functional polar groups of organic matter (such as -COOH and -OH), leading to smaller, denser, and more rigid molecules or molecular configurations (Maurice and Namjesnik-Dejanovic, 1999;Yuan and Xing, 2001;Feng et al, 2006), and rendering the reactive hydrophobic areas more accessible for HCB and DDT adsorption because of the coagulation of the most polar areas (Xing and Pignatello, 1997;Wrobel et al, 2003;Saison et al, 2004). The configuration-changed FA and HA possess glassy properties, higher affinity, greater sorption capacity and non-linearity, and high desorption hysteresis (Yuan and Xing, 2001;Wrobel et al, 2003;Feng et al, 2006).…”

Section: Effect Of Biological Activity On the Distribution Of Hcb Andmentioning

confidence: 99%

“…Heavy metals and organic contaminants often coexist in soils. The negatively charged surfaces of humic materials tend to bind metal ions, which reduce the negative charge and contribute to an improvement in the hydrophobic property of humic substances (Saison et al, 2004). Moreover, metal cations often encourage humic substances to adopt a coiled configuration and possess glassy properties, leading to greater sorption capacity and non-linearity, and higher desorption hysteresis (Yuan and Xing, 2001;Wrobel et al, 2003;Feng et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Effect of microbial activity, soil water content and added copper on the temporal distribution patterns of HCB and DDT among different soil organic matter fractions

Zhang¹,

Wen²,

Shan³

2008

Environmental Pollution

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Biological activity, soil moisture and Cu have different effects on HCB and DDT transfer from FA, HA and BHA to lipid and IR fractions. AbstractTemporal changes in the distribution of exogenous HCB and DDT among different soil organic matter fractions were studied under sterile and non-sterile conditions, different soil water contents, and different concentrations of added Cu 2þ . The residence time was 311 days. Soil organic matter was fractionated into fulvic acid (FA), humic acid (HA), bound-humic acid (BHA), lipid, and insoluble residue (IR) fractions by a methyl isobutyl ketone (MIBK) method. Results revealed that there is a mass transfer tendency of DDT and HCB from FA, HA and BHA to IR and lipid fractions with increasing residence time. Microbial activity accelerated the mass transfer, while the addition of Cu 2þ slowed it down. The HCB and DDT transfer rate decreased as the soil moisture increased from 1.9% to 60%, but increased when soil moisture increased further to 90%. A two-compartment first order kinetic model was used to describe the mass transfer from FA, HA and BHA.

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Section: Effect Of Biological Activity On the Distribution Of Hcb Andmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of microbial activity, soil water content and added copper on the temporal distribution patterns of HCB and DDT among different soil organic matter fractions

Zhang¹,

Wen²,

Shan³

2008

Environmental Pollution

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“…As a heterogeneous mixture, OC is proposed to be divided into two sorption domains: a rubbery or soft domain (including DOC and flexible humic acids, particularly fulvic acid) and a glassy or hard domain (for example, humin) depending on its structure and molecular weight [12,27,28]. Previous studies have demonstrated that the inherent DOC can attenuate the affinity and the nonlinearity of HOC sorption in soils [6,29].…”

Section: Analysis Of Mechanismsmentioning

confidence: 99%

“…The presence of phosphate compressed the weak intermolecular hydrophobic interactions between the nanoparticles and thus drove the loosely ringed aggregates into larger condensed microaggregates such as pseudomicelles in the equilibrium solutions (Fig. 3) [21,26,34] and this is believed to facilitate the binding of phenanthrene in the inner sorption domains of the DOC microaggregates [6,12,19]. At the same time, with increasing release of the rubbery OC from the soil surfaces by phosphate as stated above, the proportion of rigid or condensed OC remaining in the solid matrices increased accordingly, which would enhance the nonlinearity of phenanthrene sorption according to the well-accepted dual reactive domain model [8,27,28].…”

Section: Analysis Of Mechanismsmentioning

confidence: 99%

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Effect of phosphate on phenanthrene sorption in soils

Luo

Zhang

et al. 2011

Journal of Colloid and Interface Science

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a b s t r a c tPhosphate is ubiquitous in the environment. However, its impact on sorption of hydrophobic organic compounds in soils has received little attention. Some effects of phosphate on phenanthrene sorption were investigated in this study using two Chinese soils with contrasting properties. The presence of phosphate significantly decreased the capacity and increased the nonlinearity of phenanthrene sorption in the soils, and this sorption-inhibiting effect was more significant at high phosphate concentration. The influence of phosphate on phenanthrene sorption in the soils was governed by the release of dissolved organic carbon (DOC), particularly higher-molecular-weight and highly aromatic DOC, which tended to be enhanced in the presence of phosphate (p < 0.01) as evidenced by size exclusion chromatography and specific UV absorbance analysis. Atomic force microscopy and f potential analysis reveal that the ringed microaggregates of DOC were disrupted into larger condensed microaggregates and the solid interfaces tended to be more hydrophilic in the presence of phosphate which also inhibited the accumulation of phenanthrene in the soils. This study for the first time points to an important role of phosphate in the sorption of phenanthrene in soils and provides substantial evidence for the mechanisms involved using a combination of microscopic and chromatographic techniques.

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Influences of Hydrosoluble and Lipophilic Rhizodeposits on Pyrene Sorption in Soil

Wei

Liu

Zhang

et al. 2015

CLEAN Soil Air Water

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Plants change the behavior of pollutants in soil by rhizodeposition in the process of physiochemistry. The effects of hydrosoluble and lipophilic extracts from celery rhizodeposits on pyrene sorption were investigated. The Freundlich sorption coefficient of pyrene decreased from 1143 mg kg−1 in the bulk treatment to 670, 795, and 1030 mg kg−1 in treatments with lipophilic + hydrosoluble, hydrosoluble, and lipophilic extracts, respectively. Although both hydrosoluble and lipophilic extracts inhibited pyrene sorption, they acted at different processes on soil organic matters (SOMs) and dissolved organic matters (DOMs). The analysis of three‐dimensional fluorescence excitation‐emission matrix spectroscopy revealed that the intensity of soluble humic‐like substances increased from 5.73 in the bulk treatment to 7.74, 6.36, and 8.67 in treatments with hydrosoluble, lipophilic and hydrosoluble + lipophilic components, respectively. Images of DOMs by atomic force microscopy illustrated that the hydrosoluble extract greatly expanded the DOMs particles, while the lipophilic slightly shrank them. Moreover, the lipophilic extract dramatically softened SOMs with the glassy transition temperature declining from 50.6 ± 0.5 to 29.7 ± 2.0°C. These results not only provide insights into the mechanisms involved in pyrene sorption but also help us understand how rhizodeposition affects the pyrene bioaccessibility to some extent.

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Effect of metals on the adsorption and extractability of 14C-phenanthrene in soils

Cited by 61 publications

References 23 publications

Effect of microbial activity, soil water content and added copper on the temporal distribution patterns of HCB and DDT among different soil organic matter fractions

Effect of microbial activity, soil water content and added copper on the temporal distribution patterns of HCB and DDT among different soil organic matter fractions

Effect of phosphate on phenanthrene sorption in soils

Influences of Hydrosoluble and Lipophilic Rhizodeposits on Pyrene Sorption in Soil

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