Using a combination of gas chromatography/mass spectrometry (GC/MS) and gas chromatography/infrared spectroscopy (GC/IR) spectroscopic techniques, chemical contaminants and their hydrolysis products were identified in well water sampled in connection with a suspected childhood cancer cluster located in Dover Township, Ocean County, New Jersey. The drinking water contamination resulted from the leaching of industrial waste chemicals from drums that were disposed of at the site known as Reich Farm. Contaminants identified include dinitrile-tetralin compounds, known as 'trimers,' that are by-products of a polymerization process widely used by several polymer manufactures during the 1970s and 1980s (and still used today). Also identified were 'trimer' hydrolysis products, formed by the hydrolysis of their nitrile groups to amides. These industrial contaminants were not present in any of the mass or IR spectral library databases, and their identification required unconventional spectroscopic methods (including high resolution mass spectrometry, chemical ionization mass spectrometry, and IR spectroscopy), along with scientific reasoning and interpretation. It is currently not known whether these chemical contaminants are responsible for the childhood cancers observed in this area.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1038/sj.jea.7500020 | DOI Listing |
Nicotine Tob Res
January 2025
University of Chicago, Department of Psychiatry and Behavioral Neuroscience, Chicago, IL.
Introduction: Prior research shows that in-person exposure to electronic nicotine delivery systems (ENDS) use increases desire for cigarettes and ENDS. However, less is known about the impact of cues delivered during remote interactions. This study extends previous in-person cue work by leveraging a remote confederate-delivered cue-delivery paradigm to evaluate the impact of dual nicotine vaping (vs.
View Article and Find Full Text PDFAnal Methods
November 2017
Materials Science Centre, Indian Institute of Technology, Kharagpur-721302, India.
Functionalized polymer membrane electrodes based multichannel sensor is used as an electronic tongue to monitor the drinking water (DW) quality simply by measuring the surface electric potential with respect to Ag/AgCl reference electrode in 1 mM aqueous KCl. Changes of minute concentration of dissolved minerals greatly affected the surface potential of the sensor. The three-channel sensor device (electronic tongue) is made by using three different functionalized polymer membrane electrodes, namely, phosphorylated hexadecyl trimethyl ammonium chloride modified polyvinyl alcohol-polyacrylic acid membrane; phosphorylated and crosslinked polyvinyl--ethylene membrane; phosphorylated and crosslinked polyvinyl alcohol membrane, as working electrodes and a Ag/AgCl reference electrode.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
College of Food Science and Engineering, Northwest A&F University, 712100 Yangling, Shaanxi, China. Electronic address:
The potential health hazards of micro/nanoplastics in food have become a significant concern. This study developed a Polydopamine-modified sodium alginate hydrogel (PMSAH) for removing microplastics in daily drinking water. The hydrogel's performance, characteristics, and kinetics for microplastic removal were systematically evaluated.
View Article and Find Full Text PDFEnviron Res
January 2025
ICMR- National Institute for Research in Environmental Health, Bhopal Bypass Road, Bhauri, Bhopal - 462030, Madhya Pradesh, India. Electronic address:
A wide range of pollutants, including heavy metals, endocrine-disrupting chemicals (EDCs), residual pesticides, and pharmaceuticals, are present in various water systems, many of which strongly drive the proliferation and dissemination of antimicrobial resistance genes (ARGs), heightening the antimicrobial resistance (AMR) crisis and creating a critical challenge for environmental and health management worldwide. This study addresses the impact of anthropogenic pollutants on AMR through an extensive analysis of ARGs and mobile genetic elements (MGEs) in urban wastewater, source water, and drinking water supplies in India. Results indicated that bla and bla were the dominant ARGs across all water systems, underscoring the prevalence and dominance of resistance against β-lactam antibiotics.
View Article and Find Full Text PDFMicrob Pathog
January 2025
Cytology and Histology Department, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt. Electronic address:
The purpose of this study was to investigate the effects of thyme oil (TO), chitosan nanoparticles (CS-NPs), and TO-loaded-CS-NPs on controlling Salmonella Typhimurium (S. Typhimurium) infection in broiler chickens when compared to ciprofloxacin (Cip) antibiotic treatment. The CS-NPs and TO-loaded-CS-NPs were initially characterized using a transmission electron microscope.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!