AI Article Synopsis
- A new extraction system using dynamic sonication-assisted solvent extraction (DSASE) is introduced, providing efficient sample extraction in just 3 minutes with only 600 microL of solvent.
- The DSASE method allows for the use of a safer, halogen-free solvent and operates at 70 degrees C without boiling due to a connected restrictor.
- Tests demonstrated DSASE's superiority over static methods, recovering more organophosphate esters, especially from native samples taken from various environments, like a lecture hall and above a computer monitor.
Article Abstract
A new system for extracting solid samples based on dynamic sonication-assisted solvent extraction (DSASE) is described. The technique is highly efficient with respect to both time and solvent consumption. In tests reported here, organophosphate esters were extracted from air sampling filters in 3 min with an extraction volume of 600 microL of solvent. Furthermore, it was possible to replace a previously used chlorinated solvent with a halogen-free solvent mixture. The sample was placed in a cartridge through which fresh solvent was pumped continuously. A restrictor connected to the outlet of the cartridge allowed the system to be used at a temperature of 70 degrees C without reaching the boiling point of the solvent. Both spiked and non-spiked native samples were used for the evaluation, which clearly revealed a stronger analyte-matrix interaction in native samples. The DSASE technique was shown to recover larger amounts of organophosphate esters from native samples, compared to a static method. DSASE was applied to air samples collected in a lecture hall and from above a computer monitor.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s0021-9673(02)00318-7 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Polyurethane microplastics and associated tris(chloropropyl)phosphate additives both affect development in larval fathead minnow Pimephales promelas.
Environ Toxicol Chem
January 2025
Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, ON, Canada.
Microplastics (< 5 mm) are a diverse class of contaminants ranging in morphology, polymer type, and chemical cocktail. Microplastic toxicity can be driven by one or a combination of these characteristics. Most studies, however, evaluate the physical effect of the most commercially available polymers.
View Article and Find Full Text PDFOrganophosphate esters inhibit enzymatic proteolysis through non-covalent interactions.
Environ Int
January 2025
Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China. Electronic address:
Enzymatic proteolysis is the key process to produce bioavailable nitrogen in natural terrestrial and aquatic ecosystems for microorganisms and plants. However, little is known on how protein degradation is influenced by organic contaminants. As we known, the overuse of organophosphate esters (OPEs) has caused serious pollution in soil, water, and sediment.
View Article and Find Full Text PDFUnveiling airborne threats: Vertical profiles of multiple emerging pollutants in PM across the urban atmosphere of Southern China.
J Hazard Mater
December 2024
SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China. Electronic address:
PM has a detrimental impact on human health and has become a focus of widespread concern. The tempo-spatial distribution of emerging pollutants has been extensively studied, while there is a scarcity of understanding their vertical distribution in atmospheric environment. Here we investigated the vertical profiles of phthalate esters (PAEs), organophosphate esters (OPEs), neonicotinoids (NEOs), and per-and polyfluorinated substances (PFASs) in PM at ground level (4.
View Article and Find Full Text PDFPrenatal exposure to a mixture of organophosphate ester and organophosphorus pesticides in relation to child neurodevelopment in the Shanghai Birth Cohort.
Ecotoxicol Environ Saf
December 2024
Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China; Department of Maternal and Child Health, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China. Electronic address:
Neurotoxicity of organophosphate esters (OPEs) and organophosphorus pesticides (OPPs) has been documented in toxicological studies, though epidemiological evidence remains inconsistent. The developing fetal brain is susceptible to environmental exposures. Thus, we aim to investigate how prenatal exposure to OPEs and OPPs as mixture affects offspring neurodevelopment in preschool-aged children.
View Article and Find Full Text PDFIndividual and joint effects of exposure to multiple organophosphate esters and the risk of depression in adults: Differences in sex, age, and physical activity.
Ecotoxicol Environ Saf
December 2024
Department of Epidemiology, School of Public Health, Guangxi Medical University, Nanning, Guangxi 530021, China. Electronic address:
Depression, a severe mental disorder, is a prominent cause of global disability and worldwide. Organophosphate esters (OPEs) are neuron-disrupting chemicals that potentially cause depression. However, the effects of OPEs on depression remain unclear.
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!