Article
Environmental Sciences
Loreto Santa-Marina, Ziortza Barroeta, Amaia Irizar, Jon Inaki Alvarez, Esteban Abad, Juan Munoz-Arnanz, Begona Jimenez, Jesus Ibarluzea, Nerea Urbieta, Alba Jimeno-Romero, Miren Begona Zubero, Aitana Lertxundi
Summary: This research examines the levels and trends of pollutants, specifically 17 congeners of PCDD/Fs and 12 dl-PCBs, in the air measured in the province of Gipuzkoa (Basque Country, Spain). The study found that the toxic equivalents (TEQs) for PCDD/Fs were 12.29 fg TEQm(-3) and for dl-PCBs were 1.63 fg TEQm(-3), which were in a similar range or lower than those observed in other national and international studies in industrial areas. The findings of this study can serve as an indicator of the potential impact of ERP on the health of the resident population and the environment.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Peter Gresner, Marek Zielinski, Danuta Ligocka, Kinga Polanska, Wojciech Wasowicz, Jolanta Gromadzinska
Summary: This study analyzed the concentrations of PCDDs, PCDFs, and dl-PCBs in breast milk samples of 110 breastfeeding women from an urban area. The results showed significant correlations between dl-PCBs concentration and toxicity equivalent with mothers' age, as well as a positive association between total toxicity equivalent of all substances analyzed and the frequency of fish and dairy products consumption. These findings may provide a basis for further research on exposure to these pollutants and their mechanisms of action.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Food Science & Technology
Grazia Barone, Arianna Storelli, Rita Garofalo, Maria Maddalena Storelli
Summary: The levels of non-dioxin-like PCB indicators were determined in food samples to evaluate the exposure of adult and elderly population. The results showed that none of the samples exceeded the maximum permissible limits for human consumption established by the European Union legislation, except for salami samples. Seafood was found to be the major contributor to PCB exposure, indicating the need for further efforts to protect consumers from these harmful chemicals.
JOURNAL OF FOOD QUALITY
(2022)
Article
Medicine, Legal
Caroline Ring, Alexander Blanchette, William D. Klaren, Seneca Fitch, Laurie Haws, Matthew W. Wheeler, Michael DeVito, Nigel Walker, Daniele Wikoff
Summary: In 2005, the WHO re-evaluated the TEFs for dioxin-like compounds based on an updated database, which identified the need for a consistent approach for dose-response modeling and addressed the heterogeneity and quality issues of the database. To address this, a multi-tiered approach combining Bayesian modeling and machine learning was developed to predict the relationship between each congener and its reference and derive TEF uncertainty distributions. This workflow improved the TEF methodology by incorporating expert panel recommendations and providing transparent and reproducible results.
REGULATORY TOXICOLOGY AND PHARMACOLOGY
(2023)
Article
Ecology
Agnieszka Baran, Magdalena Urbaniak, Magdalena Szara, Marek Tarnawski
Summary: The study assessed the concentration of PCDDs/PCDFs and ecotoxicity in pore water of two reservoirs in Poland, comparing with DOC and TOC content. Higher dioxin concentration was found in pore water from Ro(z) over dotnow Reservoir than Rybnik Reservoir, with higher toxic responses recorded for A. fischeri than D. magna. The study indicates complex relationships between PCDD/F, ecotoxicity, DOC, and TOC in pore water, confirming the importance of these parameters in water environmental contamination.
Article
Environmental Sciences
P. Movalli, K. Biesmeijer, G. Gkotsis, N. Alygizakis, M. C. Nika, K. Vasilatos, M. Kostakis, N. S. Thomaidis, P. Oswald, M. Oswaldova, J. Slobodnik, J. C. E. W. Hooijmeijer, R. A. Howison, R. W. R. J. Dekker, N. van den Brink, T. Piersma
Summary: The breeding population of black-tailed godwits in the Netherlands has significantly decreased in recent decades, and the role of contaminants in this decline is unknown. Liver samples from 11 adult birds found dead in SW Friesland from 2016 to 2020 were analyzed, revealing the presence of various contaminants, including industrial chemicals, plant protection products, and pharmaceuticals. The majority of birds were found in intensive and herb-rich grasslands. These findings highlight the need for further research on the potential health risks to godwits and the sources of contamination.
Review
Environmental Sciences
Sharifah Mazrah Sayed Mohamed Zain, Mohd Talib Latif, Nor Hafizah Baharudin, Zurahanim Fasha Anual, Norfazrin Mohd Hanif, Md Firoz Khan
Summary: This review summarizes the emissions, key sources, and trends of PCDDs/PCDFs in the atmosphere of Southeast Asia, with Indonesia being the major emitter and open burning being the primary source of these compounds in the region.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Bondi Gevao, Karell Martinez-Guijarro, Perihan Binnur Kurt-Karakus, Carol Sukhn, Roland Weber, Divya Krishnan, Smitha Rajagopalan, Askin Birgul, Hassan Alshemmari, Mariam Hajeyah, Majed Bahloul, Mohamed I. Orif
Summary: The study monitored the concentrations of PCDD/F in the Middle East using passive air samplers at 12 sites across four countries. The highest concentrations were found in Oman and Kuwait, with a potential additional source involving the use of elemental chlorine. The study provides reliable measurements for assessing time trends in PCDD/F in the air.
ATMOSPHERIC POLLUTION RESEARCH
(2022)
Article
Medicine, Legal
Michael DeVito, Bas Bokkers, Majorie B. M. van Duursen, Karin van Ede, Mark Feeley, Elsa Antunes Fernandes Gaspar, Laurie Haws, Sean Kennedy, Richard E. Peterson, Ron Hoogenboom, Keiko Nohara, Kim Petersen, Cynthia Rider, Martin Rose, Stephen Safe, Dieter Schrenk, Matthew W. Wheeler, Daniele S. Wikoff, Bin Zhao, Martin van den Berg
Summary: In October 2022, the World Health Organization reevaluated the toxic equivalency factors (TEFs) for chlorinated dioxin-like compounds in a panel convened in Lisbon. This effort utilized an updated database, Bayesian dose response modeling, and meta-analysis to derive Best-Estimate TEFs. Applying these new TEFs may result in lower total toxic equivalents for dioxin-like chemicals.
REGULATORY TOXICOLOGY AND PHARMACOLOGY
(2024)
Article
Environmental Sciences
Qing Li, Hao Yang, Ning Hao, Meijn Du, Yuanyuan Zhao, Yu Li, Xixi Li
Summary: This study investigated the biodegradability of polychlorinated dibenzo-p-dioxins (PCDDs) using machine learning and multiple linear regression models. The study constructed a QSAR model to predict the biodegradability of PCDDs and demonstrated the good predictability of the model using extreme gradient boosting (XGBoost) and random forest models. The study also explored the sensitivity analysis and mechanisms of PCDDs biodegradability. The results identified key descriptors that affect the biodegradability of dioxins. The study provides a novel theoretical perspective for the research of dioxins' biodegradation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Szczepan Mikolajczyk, Malgorzata Warenik-Bany, Marek Pajurek
Summary: The study found that levels of PCDD/Fs and PCBs in Baltic fish have decreased, but there is still potential risk for frequent consumers. The average intake for children and adults exceeded the TWI, indicating that Baltic fish are still not safe for fish consumers.
MARINE POLLUTION BULLETIN
(2021)
Article
Geosciences, Multidisciplinary
Kai Wang, Shaojie Zhang
Summary: This study proposes a more accurate landslide model that considers soil interaction between adjacent cells, defines slope units, and investigates critical slip surfaces. Applying this model to the Three-Gorges Reservoir Area in China, the results show different effects of antecedent precipitation and rainfall return period on landslide triggering. The study highlights the potential increase in landslides in unexpected areas due to extreme rainfall events induced by climate change.
Article
Environmental Sciences
M. Pajurek, M. Warenik-Bany, S. Mikolajczyk
Summary: Dioxins and polychlorinated biphenyls, classified as persistent organic pollutants, primarily enter the human body through the diet, with animal feed being a significant contributor. This study found that plant-based feed materials were the main source of exceedances of dioxin and PCB limits in feed, followed by vegetable oils and fats of animal origin.
Article
Environmental Sciences
Shuai Sun, Rong Cao, Jing Jin, Yichi Zhang, Yuan Gao, Xianbo Lu, Jiping Chen, Haijun Zhang
Summary: This study investigated the levels and accumulation characteristics of PCDD/Fs and PCBs in nine pools of representative plant-origin foodstuffs from markets in five regions of the Chinese mainland. The results showed that cereals and vegetable oil contributed the most to the estimated dietary intakes of WHO-TEQ.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Stefania Squadrone, Maria Cesarina Abete, Oto Miedico, Stefania Gavinelli, Bruno Neri, Fabio Busico, Sesto Berretta, Leonardo Carosielli, Giuseppe Carrabs, Antonio E. Chiaravalle
Summary: A thresher shark caught by fishermen in Central Italy was found to contain high levels of Hg and other chemical contaminants, with Hg exceeding the maximum limit set by EU Regulation. Consumption of thresher shark flesh is strongly discouraged due to the contamination levels.
MARINE POLLUTION BULLETIN
(2021)
