Publications by authors named "K A Jobst"
Comprehensive characterization of European house dust contaminants: Concentrations and profiles, geographical variability, and implications for chemical regulation and health risk.
Sci Total Environ
December 2024
Article Synopsis
- - This study explores the levels and geographical differences of contaminants found in house dust across Europe, identifying over 1200 anthropogenic compounds using advanced techniques like mass spectrometry and suspect screening.
- - The research indicates that contaminant concentrations vary less than threefold within Europe, showing similarities with North American dust due to shared consumer products and materials.
- - It highlights geographical patterns, revealing that certain contaminants increased from north to south (like PAHs and chlorinated paraffins), whereas others, like biocides, decreased; it also emphasizes a significant risk from older, restricted contaminants, like DEHP and PCBs, despite limited toxicity data available for newer compounds.
In vivo NMR is evolving into an important tool to understand biological processes and environmental responses. Current approaches use flow systems to sustain the organisms with oxygenated water and food (e.g.
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- - Perfluoroalkyl carboxylic acids (-PFCAs) are becoming recognized as new environmental pollutants that pose detection challenges.
- - The small collision cross sections (CCS) of -PFCAs hinder their identification through ion mobility techniques.
- - Research suggests that internal hydrogen bridging in -PFCA ions is responsible for their small CCS, providing a pathway for developing improved identification methods for these pollutants.
Environmental pollution is escalating due to rapid global development that often prioritizes human needs over planetary health. Despite global efforts to mitigate legacy pollutants, the continuous introduction of new substances remains a major threat to both people and the planet. In response, global initiatives are focusing on risk assessment and regulation of emerging contaminants, as demonstrated by the ongoing efforts to establish the UN's Intergovernmental Science-Policy Panel on Chemicals, Waste, and Pollution Prevention.
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- Pharmaceuticals persist in water due to extensive use, leading to various impairments in aquatic life, with the need for deeper molecular comparisons among species.
- The study examined the effects of analgesics acetaminophen, diclofenac, and ibuprofen on the crustacean Daphnia magna and freshwater fish Japanese medaka, noting that D. magna showed more significant metabolic changes.
- Results indicated D. magna is generally more sensitive to these pharmaceuticals than medaka, establishing the importance of using environmental metabolomics for effective biomonitoring of freshwater ecosystems.