Polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) soil contamination in Lausanne, Switzerland: Combining pollution mapping and human exposure assessment for targeted risk management

Vernez, David; Oltramare, Christelle; Sauvaget, Baptiste; Demougeot-Renard, Hélène; Aicher, Lothar; Roth, Nicolas; Rossi, Isabelle; Radaelli, Arianna; Lerch, Sylvain; Marolf, Vincent; Berthet, Aurélie

doi:10.1016/j.envpol.2022.120441

Cited by 12 publications

(10 citation statements)

References 41 publications

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“…However, some parameters like AT ca could partly influence the final risk calculation. Overall, this integrated analysis of the calculations might support the risk assessment of the contaminated sites with favorable advancement and technical guidance. − …”

Section: Resultsmentioning

confidence: 77%

Multifaceted Insight into Sensitivity Analysis and Environmental Impact on Human Health of Soil Contamination Risk Assessment

Zhang,

Du,

Yuan

et al. 2023

Environ. Health

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Sensitivity analysis is a valuable method for evaluating the impact of model parameters on health risk characterization, thereby supporting the prediction of critical uncertainty factors. However, limitations arise in terms of cross-disciplinary discussions and in-depth analyses of previous research. To overcome these limitations, a systematic and multifaceted approach was introduced for analyzing the parameter sensitivities in soil contamination risk assessment. This approach specifically targeted the 12 main parameters associated with 65 soil contaminants for health risk assessment, employing detailed authoritative statistics for risk assessment. Screening analysis revealed that identified heavy metals and organics were influenced by key parameters, such as PM10, body weight of adults (BWa), daily air inhalation rate of adults (DAIRa), air exchange rate (ER), and typical soil parameters. PM10 showed a positive 100% correlation with inorganics and metals, but BWa and DAIRa exhibited different impacts on different chemicals, with an increase in potential risk observed with higher BWa and lower DAIRa. Furthermore, incorporating soil parameters in the analysis showed that compact soil could improve the protection against vapor organic compounds for human health. This refined study presents a comprehensive strategy for sensitivity analysis in health risk assessment of soil contamination, thereby offering substantial support for the protection and preservation of human health. A logical framework also was provided for addressing the limitations of sensitivity analysis and facilitating an understanding of the complex relationships between model parameters and the health risk of soil contamination.

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Section: Resultsmentioning

confidence: 77%

Multifaceted Insight into Sensitivity Analysis and Environmental Impact on Human Health of Soil Contamination Risk Assessment

Zhang,

Du,

Yuan

et al. 2023

Environ. Health

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“…For this purpose, we studied a real case of a suckling sheep herd reared extensively in an urban area contaminated with PCDD/Fs due to soil pollution from an old municipal waste incinerator. 7 …”

Section: Discussionmentioning

confidence: 99%

Accumulation Rate, Depuration Kinetics, and Tissue Distribution of Polychlorinated Dibenzo-p-Dioxins and Dibenzofurans (PCDD/Fs) in Suckler Ewes (Ovis aries)

Lerch,

Siegenthaler,

Numata

et al. 2024

J. Agric. Food Chem.

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Understanding the transfer of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in farm animals is essential for ensuring food safety, but such information for suckler ewes (Ovis aries) has been lacking. This work quantifies the accumulation, tissue distribution, and depuration kinetics of PCDD/Fs in these animals. Six suckler ewes (EXP group) were exposed to PCDD/Fs through contaminated hay (2.3−12.7 ng toxic-equivalent kg −1 dry matter) and then allowed to depurate by switching to noncontaminated hay from 29 days of lactation. Four control ewes were fed continuously with noncontaminated hay. At different time points covering depuration, weaning and slaughter, PCDD/F analysis of milk (three time points), blood and sternal adipose tissue (five time points), Longissimus thoracis muscle, liver, and empty body homogenate at slaughter (188 days of depuration) was performed. A relevant PCDD/F bioaccumulation was observed from oral intake in milk and adipose tissue (biotransfer factors of 1.24 and 1.06 day kg −1 lipids for the sum toxic-equivalent, respectively) in the EXP ewes, especially for penta-and hexa-chlorinated congeners. The EXP ewes' adipose tissue started at 10-fold the EU maximum level (ML) and showed depuration below the ML after 130 days. Specific PCDD/F accumulation in the ewe liver was observed, especially for dibenzofurans. These toxicokinetic data can inform recommendations to ensure the chemical safety of sheep food products.

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“…In paddy soils, the half-life of PCDD/Fs was estimated to be 10 to 20 years [9]. Their accumulation in the soil causes contamination of food products such as vegetables and animal food products, forming the major human exposure route for PCCD/Fs [10], with high-fat animal products serving as the main source of dioxin contamination [11 -13]. The purpose of bioremediation technologies, which include bioaugmentation, biostimulation, and phytoremediation are designed to eliminate contaminants from soil by utilizing plant species that possess a high biomass and natural microbial communities.…”

Section: Introductionmentioning

confidence: 99%

Assessing the bioaccumulation and translocation potential of vetiver grass for dioxins phytoremediation in Bien Hoa airbase, Viet Nam

Ngo,

Nguyen

2024

Vietnam J. Sci. Technol.

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Dioxins (PCDD/Fs) are well-known toxic organic pollutants that accumulate in the environment and the food chain, imposing a risk to human health and the ecosystem. Due to the use of dioxin-contaminated herbicides during the US-Vietnam War, there are several hotspots in Vietnam with very high levels of dioxins. Phytoremediation has been increasingly developed in recent decades because of its low cost and environmental-friendly aspect. Vetiver grass is a plant that can remediate both organic and inorganic agents. In this study, the uptake and translocation of dioxins in Vetiver grass (Chrysopogon zizanioides) from the dioxin-contaminated soil was investigated in a field experiment on the Bien Hoa airbase, Vietnam. An experimental area was divided into six plots, of which three were planted with Vetiver grass and three served as control plots, with the initial dioxin concentrations as following: FC2>FC3>FC1>FT2>FT3>FT1. Vetiver grass had grown well on the dioxin-contaminated soils, yielding high biomass and the level of dioxins in the roots of vetiver grass was positively correlated (r2 = 0.67; p<0.01) with its growth rate. During the first year of cultivation, Vetiver grass had the greatest capacity to efficiently accumulate dioxin. Accumulation occurs in the roots, with BAF>1 throughout the entire experiment period for FT3, and in the first year for FT1 and FT2. The dioxin translocation from the roots to the shoots was significantly lower than the BAF and less than one (TF<1), with the first and second sampling times having the highest values compared to the others. Dioxin concentrations do not provide a reliable indicator of its bioavailability but numerous other factors, such as physicochemical properties of the soil and microbes. Our study aims to contribute significant insights to capability of Vetiver grass to accumulate and translocate dioxins, hence the arsenal of dioxin remediation. Furthermore, we envisage translating our findings into practical applications in other areas, considering optimized planting techniques, growth conditions, and long-term sustainability.

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Polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) soil contamination in Lausanne, Switzerland: Combining pollution mapping and human exposure assessment for targeted risk management

Cited by 12 publications

References 41 publications

Multifaceted Insight into Sensitivity Analysis and Environmental Impact on Human Health of Soil Contamination Risk Assessment

Multifaceted Insight into Sensitivity Analysis and Environmental Impact on Human Health of Soil Contamination Risk Assessment

Accumulation Rate, Depuration Kinetics, and Tissue Distribution of Polychlorinated Dibenzo-p-Dioxins and Dibenzofurans (PCDD/Fs) in Suckler Ewes (Ovis aries)

Assessing the bioaccumulation and translocation potential of vetiver grass for dioxins phytoremediation in Bien Hoa airbase, Viet Nam

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