Selective sorption and desorption of DOM in podzol horizons — FTIR and Py-GC/MS of leachates from a column experiment

Santos, Sara Ramos Dos; Schellekens, Judith; Silva, Wilson Tadeu Lopes da; Buurman, P.; Boim, Alexys Giorgia Friol; Vidal‐Torrado, Pablo

doi:10.1016/j.scitotenv.2022.154144

Cited by 9 publications

(4 citation statements)

References 69 publications

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“…The S 275-295 in treated water was positively correlated with both the breast cancer incidence and the mortality (r = 0.97, p < 0.01 and r = 0.43, p > 0.05, respectively), while it was negatively correlated with the CTI (r = −0.40, p > 0.05), indicating that the breast-cancerprotective effect of lignin-related components may also be associated with anti-proliferative properties. The FTIR spectra of DOM further confirmed the widespread nature of ligninrelated components in the study area (Figure S11), with the absorption peaks referring to the O-H and C-O groups of phenols (1420 cm −1 ) and the aromatic C-H of the guaiacyl units in lignin (1140, 860, and 810 cm −1 ) [56][57][58][59][60]. Interestingly, the relative intensities of the major lignin-characterized peaks (i.e., 1140 and 860 cm −1 ) showed negative correlations with the breast cancer incidence and mortality, as well as positive correlations with the CTI (Figure S12).…”

Section: Identification Of Key Dom With Breast-cancer-associated Prop...supporting

confidence: 53%

Identification of Breast-Cancer-Associated Properties of Drinking Water under a Composite-Toxicity Perspective of Mixed Contaminants: A Case Study in a High-Prevalence Area of China

Peng,

Dong,

Gong

et al. 2024

Water

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Breast cancer is the most frequently diagnosed female cancer worldwide. Environmental contaminant exposure is suspected to be crucial, but the broad-spectrum communal properties that these suspected contaminants all share remain to be explored, especially in source and drinking water. In this work, we focused on the Pearl River Basin, which has the highest breast cancer incidence and mortality in China, and hypothesized that the breast cancer risk in this area is associated with its water source. Our objective was to resolve the possible communal properties that are associated with breast cancer from water mixture extracts of source and drinking water and to identify the key drivers by utilizing the latest epidemiology data, performing an exhaustive water toxicological and chemical characterization, and combining partial least-squares path statistics modeling (PLS-PM). We proposed a path for a drinking water-toxicity-induced breast cancer risk and confirmed its association with estrogen-receptor- and thiol-depletion-relevant mechanisms. The breast cancer incidence risk was associated with water-mixture-promoted mammalian cell proliferation (i.e., estrogenic effect), while the mortality risk was associated with a greater thiol depletion (i.e., oxidative stress). Endocrine-disrupting chemicals (EDCs) and dissolved organic matter (DOM) from anthropogenic sources in drinking water are key drivers for estrogenic effects and oxidative stress, respectively. The PLS-PM standardized effects of the DOM and EDCs in treated water on the breast cancer incidence and mortality were −0.07 and 0.31, and 0.35 and 0.31, respectively, further revealing that EDCs strongly influence the incidence risk, whereas the mortality risk resulted from the joint effects of EDCs and DOM. This study clearly shows an association between the breast cancer risk and drinking water toxicity in a high-prevalence area of China, broadening the future perspectives for water-contaminant-specific breast cancer prevention research.

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Section: Identification Of Key Dom With Breast-cancer-associated Prop...supporting

confidence: 53%

Identification of Breast-Cancer-Associated Properties of Drinking Water under a Composite-Toxicity Perspective of Mixed Contaminants: A Case Study in a High-Prevalence Area of China

Peng,

Dong,

Gong

et al. 2024

Water

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“…These results indicated that the microbial origin DOM C3 component mainly consists of low-molecular weight tannins. Moreover, AC selectively sorbs high-molecular weight molecules. − In contrast to the DOM extracted from paddy soils or occurring in overlying water, − the porewater DOM had a significantly lower content of carbohydrates, unsaturated hydrocarbons, and protein/lipid. This was in accordance with the absence of protein-like components in porewater DOM fluorophores.…”

Section: Resultsmentioning

confidence: 99%

Activated Carbon Application Simultaneously Alleviates Paddy Soil Arsenic Mobilization and Carbon Emission by Decreasing Porewater Dissolved Organic Matter

Si,

Wu,

et al. 2024

Environ. Sci. Technol.

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Flooding of paddy fields during the rice growing season enhances arsenic (As) mobilization and greenhouse gas (e.g., methane) emissions. In this study, an adsorbent for dissolved organic matter (DOM), namely, activated carbon (AC), was applied to an arsenic-contaminated paddy soil. The capacity for simultaneously alleviating soil carbon emissions and As accumulation in rice grains was explored. Soil microcosm incubations and 2-year pot experimental results indicated that AC amendment significantly decreased porewater DOM, Fe(III) reduction/Fe 2+ release, and As release. More importantly, soil carbon dioxide and methane emissions were mitigated in anoxic microcosm incubations. Porewater DOM of pot experiments mainly consisted of humic-like fluorophores with a molecular structure of lignins and tannins, which could mediate microbial reduction of Fe(III) (oxyhydr)oxides. Soil microcosm incubation experiments cospiking with a carbon source and AC further consolidated that DOM electron shuttling and microbial carbon source functions were crucial for soil Fe(III) reduction, thus driving paddy soil As release and carbon emission. Additionally, the application of AC alleviated rice grain dimethylarsenate accumulation over 2 years. Our results highlight the importance of microbial extracellular electron transfer in driving paddy soil anaerobic respiration and decreasing porewater DOM in simultaneously remediating As contamination and mitigating methane emission in paddy fields.

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“…Although the toxicity of Cd, Cr and Pb inhibited shoot and root growth, the shoot was found to be less harmful to heavy metals than root, while the result varied from roots and leaves. This may be because the root could play an important role by preventing excess toxicity accumulation and protecting the shoot part against heavy metal translocation [ 42 ]. Moreover, rhizosphere microbes play a vital role in enhancing soil heavy metal availability in plant cells by transforming metals into bioavailable and soluble forms through siderophores, organic acids, biosurfactants, biomethylation, and redox processes [ 35 , 43 ].…”

Section: Discussionmentioning

confidence: 99%

The effects of monoculture and intercropping on photosynthesis performance correlated with growth of garlic and perennial ryegrass response to different heavy metals

Ali,

Hussain,

Yanwisetpakdee

et al. 2024

BMC Plant Biol

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Background The potential of phytoremediation using garlic monoculture (MC) and intercropping (IC) system with perennial ryegrass to enhance the uptake of cadmium (Cd), chromium (Cr), and lead (Pb) were investigated. Results Positive correlations were found between MC and IC systems, with varying biomass. Production of perennial ryegrass was affected differently depending on the type of toxic metal present in the soil. Root growth inhibition was more affected than shoot growth inhibition. The total biomass of shoot and root in IC was higher than MC, increasing approximately 3.7 and 2.9 fold compared to MC, attributed to advantages in root IC crop systems. Photosystem II efficiency showed less sensitivity to metal toxicity compared to the control, with a decrease between 10.07–12.03%. Among gas exchange parameters, only Cr significantly affected physiological responses by reducing transpiration by 69.24%, likely due to leaf chlorosis and necrosis. Conclusion This study exhibited the potential of garlic MC and IC with perennial ryegrass in phytoremediation. Although the different metals affect plant growth differently, IC showed advantages over MC in term biomass production.

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Selective sorption and desorption of DOM in podzol horizons — FTIR and Py-GC/MS of leachates from a column experiment

Cited by 9 publications

References 69 publications

Identification of Breast-Cancer-Associated Properties of Drinking Water under a Composite-Toxicity Perspective of Mixed Contaminants: A Case Study in a High-Prevalence Area of China

Identification of Breast-Cancer-Associated Properties of Drinking Water under a Composite-Toxicity Perspective of Mixed Contaminants: A Case Study in a High-Prevalence Area of China

Activated Carbon Application Simultaneously Alleviates Paddy Soil Arsenic Mobilization and Carbon Emission by Decreasing Porewater Dissolved Organic Matter

The effects of monoculture and intercropping on photosynthesis performance correlated with growth of garlic and perennial ryegrass response to different heavy metals

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