A simple method of biological monitoring has been developed for occupational benzene exposure. Personal benzene exposure monitoring using a passive sampler and GC/FID was carried out on 74 workers from a benzene-treated company. Their urines were collected before and after work-shift. After treatment of urine samples using solid phase extraction (SPE), trans, trans-muconic acid(t, t-MA) concentration in the elute was analysed by HPLC. Correlation between benzene exposure (X: ppm) and urinary t, t-MA concentration (Y: mg/g x creatinine) for non-smokers was Y = 0.948X + 0.586 (r = 0.798, P < 0.01) and Y = 0.885X + 0.894 (r = 0.871, P < 0.01) for smokers, respectively. The t, t-MA concentration on 1 ppm TLV exposure to benzene was estimated as 1.5 and 1.8 (mg/g creatinine) for non-smokers and smokers, respectively. These values are in agreement with some investigators. This indicates that our simple method for biological monitoring of benzene exposure can be of great service.
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http://dx.doi.org/10.7888/juoeh.27.97 | DOI Listing |
Angew Chem Int Ed Engl
January 2025
University of Limerick, Chemical Sciences, IRELAND.
Guest transport through discrete voids (closed pores) in crystalline solids is poorly understood. Herein, we report the gas sorption properties of a nonporous coordination network, [Co(bib)2Cl2]n·2MeOH (sql-bib-Co-Cl-α), featuring square lattice (sql) topology and the bent linker 1,3-bis(1H-imidazol-1-yl)benzene (bib). The as-synthesized sql-bib-Co-Cl-α has 11.
View Article and Find Full Text PDFFungal Biol
February 2025
Department of Animal Biology, Faculty of Natural Sciences University of Tabriz, Tabriz, Iran; Microbial Biotechnology Research Group, Faculty of Natural Sciences University of Tabriz, Tabriz, Iran. Electronic address:
Benzene, toluene, ethylbenzene, and xylene (BTEX) exposure is known to be carcinogenic and neurotoxic chemicals to humans. This study investigates the potential of fungal native strains for the bioremediation of BTEX compounds. Fungal isolates were obtained from BTEX-enriched soil, and their ability to degrade these pollutants was evaluated.
View Article and Find Full Text PDFEnviron Sci Process Impacts
January 2025
Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
Burning and flaring of oil and gas following the 2010 Deepwater Horizon (DWH) oil spill generated high airborne concentrations of fine particulate matter (PM). Neurological effects of PM have been previously reported, but this relationship has received limited attention in the context of oil spills. We evaluated associations between burning-related PM and prevalence of self-reported neurological symptoms during, and 1-3 years after, the DWH disaster cleanup.
View Article and Find Full Text PDFERJ Open Res
January 2025
Department of Biochemistry and Molecular Biology B and Immunology, University of Murcia, Murcia, Spain.
Introduction: Exposure to environmental factors ( air pollution and second-hand tobacco smoke) have been associated with impaired lung function. However, the impact of environmental factors on lung health is usually evaluated separately and not with an exposomic framework. In this regard, breath analysis could be a noninvasive tool for biomonitoring of global human environmental exposure.
View Article and Find Full Text PDFSensors (Basel)
December 2024
Institute of Atmospheric Pollution Research-National Research Council (IIA-CNR), Research Area of Rome 1, Strada Provinciale 35d, Montelibretti, 9-00010 Roma, Italy.
Ecosystems and environments are impacted by atmospheric pollution, which has significant effects on human health and climate. For these reasons, devices for developing portable and low-cost monitoring systems are required to assess human exposure during daily life. In the last decade, the advancements of 3D printing technology have pushed researchers to exploit, in different fields of applications, the advantages offered, such as rapid prototyping and low-cost replication of complex sample treatment devices.
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