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Respiratory quaternary ammonium and volatile organic compound exposures experienced by home care aides during residential bathroom cleaning using conventional and green products.
Ann Work Expo Health
December 2024
Division of Respiratory Health, National Institute for Occupational Safety and Health (NIOSH), 1095 Willowdale Road, Morgantown, WV, United States.
Article Synopsis
- - The study investigates respiratory exposures of US home care aides to harmful chemicals while using different cleaning and disinfecting products during bathroom cleaning, focusing on VOCs and QACs present in these products.
- - A total of 22 aides tested three cleaning products: bleach-based, QACs-based, and a "green" product, with air sampling conducted to measure VOCs and QACs in a controlled environment.
- - Results showed the presence of 38 unique VOCs, with many not listed on product labels, highlighting potential health risks due to limited toxicity information and occupational exposure limits for the identified chemicals.
Twenty-eight days later: The recovery of DNA from human remains submerged in aggressive household chemicals.
J Forensic Sci
December 2024
Department of Forensic Science, College of Criminal Justice, Sam Houston State University, Huntsville, Texas, USA.
Aggressive chemicals intended for cleaning pools or unclogging drains contain high concentrations of dangerous compounds, leading to their nefarious use in dissolving human remains in some criminal cases. The use of these readily accessible household cleaners to destroy human remains and hide evidence of a crime presents a considerable challenge for human identification. However, research on the success of recovering DNA from such remains is limited.
View Article and Find Full Text PDFDual-Band Electrochromic Supercapacitor Utilizing Metal-Organic Coordination Polymer with Multi-Redox Feature.
Macromol Rapid Commun
November 2024
College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
Electrochromic supercapacitors, which indicate energy states through optical color changes, are gaining significant attention for their potential in energy saving and recycling. In this study, a novel metal-organic coordination polymer (DTPB-MCP) is successfully synthesized using an N,N'-diphenyl-1,4-phenylenediamine (DTPB)-functionalized phenanthroline ligand. The resulting DTPB-MCP film demonstrated desirable electrochromic performance in both the visible light (ΔT:77.
View Article and Find Full Text PDFRegulatory issues related to the use of sodium hypochlorite solutions in endodontics.
Int Endod J
November 2024
Clinic for Conservative and Preventive Dentistry, University of Zurich Center for Dental Medicine, Zurich, Switzerland.
Aim: To assess the regulation of sodium hypochlorite (NaOCl) solutions for endodontic usage in some of the world's main dental markets, in view of the European Union's recent move to classify antimicrobial root canal irrigants as high-risk devices under their Medical Device Regulation (MDR).
Methodology: The authors consulted legal texts available online and communicated with local health authorities wherever necessary to assess into which medical device category NaOCl solutions intended for endodontic application were subsumed. Furthermore, it was investigated whether there were sources outside the dental market to obtain NaOCl solutions for root canal treatments.
Aqueous degradability of water-soluble, thioester-containing polyacrylamides with UCST-type behaviour in salt solutions obtained by rROP.
Chem Commun (Camb)
November 2024
Universite Paris-Saclay, CNRS, Institut Galien Paris-Saclay, 17 avenue des Sciences, 91400 Orsay, France.
We report the successful synthesis of hydrophilic thioester-containing polyacrylamide copolymers by the RAFT and free-radical copolymerisation of dibenzo[,]oxepane-5-thione with either acrylamide or -isopropylacrylamide. These copolymers efficiently degrade in aqueous solutions of sodium hydroxide, isopropylamine, L-cysteine, and household bleach, reducing the weight-average molecular weight by up to ∼90%.
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