AI Article Synopsis

  • PFAS (Per-and polyfluoroalkyl substances) are a global concern for human health, and this study investigates how indoor environments contribute to human exposure through dust.
  • Researchers collected dust samples from homes, offices, and public transport in Australia, finding higher PFAS concentrations in offices compared to houses and transport vehicles.
  • The estimated daily intakes of PFAS via dust ingestion were below the safe levels set by health authorities for both adults and toddlers, indicating low exposure risk from the environments studied.

Article Abstract

Per-and polyfluoroalkyl substances (PFAS) have been a global concern in relation to human exposure. Dust has been proven to be an important source of human exposure to many groups of organic pollutants, however, no study so far has systematically evaluated human exposure to PFAS depending on time spent in different indoor environments i.e., houses, offices and public transport vehicles. Archived dust samples were collected from residential houses (n = 38), offices (n = 15), and public transport vehicles (n = 12) in Australia to assess human exposures to PFAS via dust ingestion and dermal contact. Amongst the 19 target analytes, 14 compounds were detected in >50% of the samples. Significantly higher PFAS concentrations were found in dust samples collected from offices with mean ± SD of 400 ± 810 ng/g than houses (170 ± 350 ng/g) and public transport vehicles (39 ± 33 ng/g). Composition patterns of PFAS varied among indoor environments with Perfluorohexanoic acid (PFHxA) (median 2.5 ng/g dust) and perfluorooctanoic acid (PFOA) (median 5.7 ng/g) were the most prevalent compounds detected (DF = 100%). PFOA was the dominant PFAS compound in both offices (median 11 ng/g) and houses (median 5.8 ng/g). Perfluorododecanoic acid (PFDoA) (median 3.6 ng/g) was found to be the most abundant compounds in public transport vehicles. Considering the time spent in indoor environments, relatively higher estimated daily intakes (EDIs) were identified in offices than in houses and public transport vehicles. EDIs for PFOA and perfluorooctane sulfonic acid (PFOS) for adults and toddlers were well below the acceptable levels of 20 ng/kg/day proposed by U.S Environmental Protection Agency (USEPA) and Food Standard Australia and New Zealand (USEPA, 2016; FSANZ et al. (2016)), suggesting low or negligible exposure pathways via dust ingestion and dermal contact.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.chemosphere.2024.143372DOI Listing

Publication Analysis

Top Keywords

public transport
20
transport vehicles
20
indoor environments
16
human exposure
16
polyfluoroalkyl substances
8
substances pfas
8
time spent
8
spent indoor
8
dust samples
8
samples collected
8

Similar Publications

The occurrence of viral diseases poses a huge threat and impact on human public health safety and the development of the animal and fishery industry. Here, a strain of single-chain antibody fragment, scFv-1, was isolated from the phage antibody display library construct by immunizing New Zealand white rabbits with rhabdovirus. analysis showed that the single-chain antibody could inhibit the infection of the virus in multiple pathways, including adsorption, fusion, and release.

View Article and Find Full Text PDF

This study explored the use of virtual reality (VR) in disaster preparedness education, focusing on VR scenarios, disaster types, and user interactivity to identify gaps in existing research. A scoping review methodology, based on the Arksey and O'Malley framework and Preferred Reporting Items for Systematic Reviews and Meta-Analyses-Scoping Reviews (PRISMA-ScR) guidelines, was used, and the protocols were registered in the UMIN Clinical Trials Registry (UMIN000052800). The review included PubMed, CINAHL, the Cochrane Central Register of Controlled Trials in the Cochrane Library, and Ichushi-Web of the Japan Medical Abstract Society, with data up to January 31, 2024.

View Article and Find Full Text PDF

Volatile organic compounds (VOCs) notably influence air quality, climate and secondary pollutant formation, particularly regions in where urban emissions interact with natural biogenic sources at the interface of urban and natural ecosystems. This study examined the VOC profiles in the Sakaerat dry evergreen forest and the urban area of Nakhon Ratchasima, Thailand, throughout 2023, focusing on seasonal and spatial variations in biogenic and anthropogenic VOCs (BVOCs and AVOCs, respectively). Hydrocarbons, mainly alkanes, dominated VOC compositions, contributing 43.

View Article and Find Full Text PDF

Occurrence, bioaccumulation and trophodynamics of per- and polyfluoroalkyl substances (PFAS) in terrestrial and marine ecosystems of Svalbard, Arctic.

Water Res

December 2024

State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China.

Per- and polyfluoroalkyl substances (PFAS) enter the Arctic through long-range transport and local pollution. To date, little is known about their behavior in plant and benthic marine food webs in remote Arctic. In this study, we analyzed the environmental distribution and nutrient transfer of 20 PFAS in soil, sediment, plant and benthic biota samples collected between 2014 and 2016 in Svalbard, Arctic.

View Article and Find Full Text PDF

Persons living with spinal cord injury (SCI) often lacks access to outdoor mobility, which can significantly impact their ability to participate in activities outside the home, to take part in their community, and to have meaningful occupations and relationships with loved ones. To better understand the importance of outdoor mobility for persons with SCI, the aim of this cross-sectional study was to explore transport modes, car adaptations, and their perceived function and safety. A web-survey, addressing outdoor mobility and driving, was distributed among people with different physical impairments.

View Article and Find Full Text PDF

Want 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!

A PHP Error was encountered

Severity: Notice

Message: fwrite(): Write of 34 bytes failed with errno=28 No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 272

Backtrace:

A PHP Error was encountered

Severity: Warning

Message: session_write_close(): Failed to write session data using user defined save handler. (session.save_path: /var/lib/php/sessions)

Filename: Unknown

Line Number: 0

Backtrace: