In 2002, a cross-sectional study designed to compare the serum dioxin toxic equivalent concentrations (TEQ) of a population-based sample of Calcasieu Parish, Louisiana residents, to Lafayette Parish was conducted. The mono-ortho polychlorinated biphenyls (PCBs) were measured in order to calculate the TEQ. We compared the sum of lipid adjusted serum concentrations of 27 PCB congeners (total PCBs) in residents of these two parishes and also by their demographic characteristics. The geometric means (GM) [standard errors (SE)] of the concentrations (ngg(-1) lipids) of total PCBs in participants from Calcasieu Parish and Lafayette Parish were 154 (11.8) and 168.6 (20.8) (T-test p=0.54), respectively. Various percentiles of the distribution of serum total PCB concentrations were similar in the two parishes. After adjusting by age and race in the ANCOVA regression model, the adjusted GM for the lipid adjusted total PCBs was statistically higher in the residents in Lafayette than in Calcasieu Parish regardless of age or race (P=0.007). The adjusted GM of lipid adjusted total PCBs for African Americans was significantly higher than for Whites (p<0.001). Serum total PCB levels in residents of both parishes increased linearly with age (P<0.001). The congener profiles were similar in residents of both parishes. We also compared the GMs of a sum of 8 PCBs in Calcasieu and Lafayette Parish residents to those from a representative sample of the U.S. general population in 2001-2002 and they were not significantly different between parishes or between the parish data and the U.S. general population.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.chemosphere.2014.07.073 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The screening of priority pollutants in the Bohai Sea based on ecological risk assessment.
Mar Environ Res
December 2024
Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, and College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, China. Electronic address:
The Bohai Sea (BS) is a semi-enclosed inland sea and China's most polluted coastal sea. With the rapid economic development of the circum-Bohai Sea region, large amounts of pollutants have been discharged into the BS, posing a significant threat to human health and the ecosystem. Great efforts have been made on investigating the levels of various pollutants in the BS; however, the priority pollutants which are required for the implementation of suitable environmental management and remediation measures in this system remain unclear.
View Article and Find Full Text PDFOrganic compounds in valley fogwater in North and Mount Lebanon during COVID-19 period.
Sci Total Environ
December 2024
Institute of Chemistry and Processes for Energy, Environment and Health ICPEES UMR 7515, University of Strasbourg, F-67087 Strasbourg Cedex 3, Strasbourg, France. Electronic address:
Article Synopsis
- Caltech's Active Strand Cloudwater collectors gathered valley fog samples from Mount and North-Lebanon in 2021 to analyze organic matter for the first time.
- Numerous pollutants were found in the fogwater, including pesticides, phenols, acids, and persistent organic pollutants like PCBs and PAHs.
- The study highlights strong correlations between various compounds, suggesting that vehicle exhaust and atmospheric conditions are primary sources, emphasizing the need for further research on the agricultural potential of fogwater in Lebanon.
Persistent organic pollutants and fatty acids in humpback whales: Antarctic and Chilean feeding and Brazilian breeding sites.
Sci Total Environ
December 2024
Instituto Oceanográfico, Universidade de São Paulo, Praça do Oceanográfico, 191, São Paulo, SP 05508-120, Brazil.
Article Synopsis
- The study examined the fatty acid profiles and persistent organic pollutant (POP) levels in humpback whales from different regions of the Southern Ocean, Chile, and Brazil.
- Significant differences were found in the fatty acid compositions, with whales in the Strait of Magellan showing a diet high in higher trophic level prey, while those from the Antarctic Peninsula and Brazil reflected a krill-based diet.
- Elevated concentrations of pollutants, especially PCBs, were observed in whales from the Strait of Magellan, indicating a connection between their dietary habits and exposure to contaminants.
Aroclor speciation by unsupervised exploratory analysis of congener proportions in multivariate space: A southern California bight sediment and fish study.
Sci Total Environ
December 2024
Environmental Monitoring Division, City of Los Angeles, 12000 Vista Del Mar, Playa Del Rey, CA 90293, USA; Department of Health Sciences and Sciences, University of California - Los Angeles, Los Angeles, CA 90024, USA. Electronic address:
Polychlorinated biphenyl (PCB) congeners, sold commercially as different mixtures under the trade name Aroclor in the USA, pose ecological and public health hazards. In the environment, they are monitored as Aroclors for potential source tracking and more accurately as congeners to understand the extent of PCB contamination in total. Because of the subjectivity with which Aroclors are currently identified in samples, striving towards clarity is a focus for analytical chemists.
View Article and Find Full Text PDFOrganophosphate flame retardants and their metabolites in paired dog food and urine: Pet exposure through food consumption.
Chemosphere
December 2024
Department of Environmental Science, Kangwon National University, Chuncheon, 24341, Republic of Korea. Electronic address:
Companion dogs are exposed to various chemicals. However, our understanding of the sources and pathways of chemical exposure in pets remains limited. In this study, we collected urine samples from 47 dogs and corresponding samples of the food they consumed to analyze the concentrations and dietary exposure to organophosphate flame retardants (OPFRs) and their metabolites (mOPFRs).
View Article and Find Full Text PDFWant 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!