Aerial portions of vegetation receive the bulk of their burden of persistent organic pollutants (POPs) from the atmosphere. Vegetation can therefore be a useful indicator of the changing atmospheric burden of POPs. Samples of archived pasture, collected from Rothamsted Experimental Station in the United Kingdom between 1930 and 2004, were analyzed for a range of polybrominated diphenyl ethers (PBDEs). PBDEs could not be routinely detected in the pre-1970 samples. Thereafter, the dominant congeners BDE 28, 47, 49, 99, 100, 153, 154, and 183 were frequently detected. The general trend was (a) a rise through the 1970s; (b) a minipeak in the mid-1980s, strongly influenced by one particularly high sample for 1984; (c) values remaining high through the late 1980s/1990s; (d) an indication of a more recent decline for all congeners (except BDE-28), consistent with recent restrictions on PBDE usage in Europe. These trends were compared to recent modeled estimates of U.K. PBDE emissions. The congener profiles of technical mixtures, U.K. air, soil, and pasture were compared and shown to be broadly similar. The implications for environmental release mechanisms are discussed.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/es0486162 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Modeling bladder mechanics with 4D reconstruction of murine ex vivo bladder filling.
Biomech Model Mechanobiol
December 2024
Department of Mechanical Engineering, Michigan State University, East Lansing, MI, USA.
This study presents a novel methodology for high-resolution 3D bladder modeling during filling, developed by leveraging improved imaging and computational techniques. Using murine bladder filling data, the methodology generates accurate 3D geometries across time, enabling in-depth mechanical analysis. Comparison with a traditional spherical model revealed similar stress trends, but the 3D model permitted nuanced quantifications, such as localized surface curvature and stress analysis.
View Article and Find Full Text PDFMetrology with a twist: probing and sensing with vortex light.
Light Sci Appl
January 2025
School of Physics, University of the Witwatersrand, Private Bag 3, Johannesburg, 2050, South Africa.
Optical metrology is a well-established subject, dating back to early interferometry techniques utilizing light's linear momentum through fringes. In recent years, significant interest has arisen in using vortex light with orbital angular momentum (OAM), where the phase twists around a singular vortex in space or time. This has expanded metrology's boundaries to encompass highly sensitive chiral interactions between light and matter, three-dimensional motion detection via linear and rotational Doppler effects, and modal approaches surpassing the resolution limit for improved profiling and quantification.
View Article and Find Full Text PDFRenal-clearable probes for disease detection and monitoring.
Trends Biotechnol
December 2024
Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, València, Spain; Departamento de Química, Universitat Politècnica de València, Camino de Vera s/n 46022, Valencia, Spain; CIBER de Bioingeniería Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, 28029, Madrid, Spain; Unidad Mixta UPV-CIPF de Investigación en Mecanismos de Enfermedades y Nanomedicina, Valencia, Universitat Politècnica de València, Centro de Investigación Príncipe Felipe, Avenida Eduardo Primo Yúfera, 3, 46012, Valencia, Spain; Unidad Mixta de Investigación en Nanomedicina y Sensores, Universitat Politècnica de València, Instituto de Investigación Sanitaria La Fe (IISLAFE), Avenida Fernando Abril Martorell, 106, 46026, Valencia, Spain.
The demand for novel, minimally invasive, cost-effective, and easily readable diagnostic tools, primarily designed for the longitudinal monitoring of diseases and their treatments, has promoted the development of diagnostic systems that selectively target cells, tissues, or organs, at the same time minimizing their nonspecific accumulation, thus reducing the risk of toxicity and side effects. In this review, we explore the development of renal-clearable systems in non-invasive or minimally invasive detection protocols, all with the objective of minimizing nonspecific accumulation and its associated toxicity effects through quick renal excretion. These probes can identify molecules of interest or different healthy states of the patients through the direct analysis of urine (urinalysis).
View Article and Find Full Text PDFThe Burden of Severe Periodontitis in China From 1990 to 2021, With Projections to 2050: A Comprehensive Analysis From The Global Burden of Disease Study 2021.
Int Dent J
December 2024
School of Stomatology, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China; The Stomatology Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China. Electronic address:
Background: The study aims to explore the epidemiologic information related to severe periodontitis in China.
Methods: We analyzed data from the Global Burden of Disease (GBD) 2021 study to delineate the incidence, prevalence, and disability-adjusted life years (DALYs) attributable to severe periodontitis in China, stratified by age and gender. A range of analytical methods, including comparative analysis, trend analysis, decomposition analysis, hierarchical cluster analysis, health inequality analysis, and predictive modeling, were employed to provide a comprehensive evaluation of the disease burden.
Trends and cross-country inequality in the incidence of GI cancers among the working-age population from 1990 to 2021: a Global Burden of Disease 2021 analysis.
Gut
December 2024
Division of Gastroenterology and Hepatology, Shanghai Institute of Digestive Disease, NHC Key Laboratory of Digestive Diseases, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
Background: GI cancers pose an increasing global health burden, with their impact on the working-age population (WAP) aged 15-64 years remaining largely unexplored despite the crucial role of this group in societal and economic well-being.
Objective: To assess trends and cross-country inequality in the global burden of six GI cancers from 1990 to 2021 among individuals in the WAP.
Design: The 2021 Global Burden of Disease study dataset was used to obtain estimates of GI cancer incidence and 95% uncertainty intervals, including the number of cases, crude incidence rate and age-standardised incidence rate (ASIR).
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!