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Spatial and Temporal Analysis, and Machine Learning-Based Prediction of PCB Water Concentrations in U.S. Natural Water Systems.
ACS ES T Water
January 2025
University of Iowa Libraries, The University of Iowa, Iowa City, Iowa 52242, United States.
Data on dissolved phase water concentrations of polychlorinated biphenyls (PCBs) from 32 locations across the U.S. were compiled from reports, Web sites, and peer-reviewed papers, spanning 1979-2020, resulting in 5132 individual samples.
View Article and Find Full Text PDFContamination levels and distribution of persistent and non-persistent pollutants in paired hair, urine and serum samples from a Belgian non-occupationally exposed population.
J Toxicol Environ Health A
January 2025
Department of Clinical, Forensic, Environmental, and Industrial Toxicology, University Hospital of Liege, Liege, Belgium.
Designing ideal human biomonitoring studies involves the selection of reliable markers of exposure in adequate biological matrix. Besides conventional matrices such as blood or urine, hair has been increasingly investigated as a promising noninvasive alternative. However, understanding the pollutant distribution between differing biological compartments is essential for reliable interpretation of data collected.
View Article and Find Full Text PDFDevelopmental exposure to legacy environmental contaminants, medial temporal lobe volumes and spatial navigation memory in late adolescents.
Environ Res
January 2025
Département de Psychologie, Université du Québec à Montréal, C.P. 8888 succursale Centre-ville, Montréal, Québec, H3C 3P8, Canada; Centre de Recherche du CHU Sainte-Justine, 3175, Chemin de La Côte-Sainte-Catherine, Montréal, Québec, H3T 1C5, Canada. Electronic address:
Exposure to lead, mercury, and polychlorinated biphenyls (PCBs) has been causally linked to spatial memory deficits and hippocampal changes in animal models. The Inuit community in Northern Canada is exposed to higher concentrations of these contaminants compared to the general population. This study aimed to 1) investigate associations between prenatal and current contaminant exposures and medial temporal brain volumes in Inuit late adolescents; 2) examine the relationship between these brain structures and spatial memory; and 3) assess the mediating role of brain structures in the association between contaminant exposure and spatial memory.
View Article and Find Full Text PDFTemporal development of chlorinated hydrocarbons in the Baltic Sea sediments: Characterization of the pollution maximum.
Sci Total Environ
January 2025
Leibniz Institute for Baltic Sea (IOW), Marine Chemistry Department, Seestraße 15, 18119 Rostock, Germany; IOW, Seestraße 15, 18119 Rostock, Germany. Electronic address:
The Baltic Sea, a semi-enclosed marginal sea with a catchment area four times its size, acts as a sink and continues to show detectable levels of persistent organic pollutants (POPs) in its sediments. This is attributed to the synthesis and industrial use of commercial polychlorinated biphenyls (PCB) products, as well as the widespread use and discharge of certain chlorinated pesticides into the natural environment during the last century. Our study investigates chlorinated hydrocarbon pollutants, the polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane (DDT) and its metabolites as well as hexachlorobenzene (HCB) in sediments based on several short sediment cores from different basins covering almost the entire Baltic Sea.
View Article and Find Full Text PDFCritical Review: Considerations in Applying Avian Egg Injection Studies to Characterize Effects of Hydrophobic Organic Compounds on Wild Birds.
Chemosphere
January 2025
Ramboll, 3401 Enterprise Place, Suite 340, Beachwood, Ohio 44122, USA. Electronic address:
Egg injection has been used for decades to determine embryonic mortality and developmental effects of chemical exposures in birds. Specific egg injection methods affect how well these studies replicate the process of chemical delivery to the embryo via maternal deposition, yet few data are available to compare exposure-response relationships between egg injection and maternal transfer studies. This information gap creates uncertainty when considering egg injection studies for assessment of potential adverse effects in wild birds.
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