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Rapid investigation of the alteration in biochemical profile of maize seedlings treated with aluminium oxide nanoparticles using spectroscopic techniques.
Spectrochim Acta A Mol Biomol Spectrosc
December 2024
Saha's Spectroscopy Laboratory, Department of Physics, University of Allahabad, Prayagraj, India.
The present study demonstrates the applicability of non-destructive and rapid spectroscopic techniques, specifically laser-induced fluorescence, ultraviolet-visible, and confocal micro-Raman spectroscopy, as non-invasive, eco-friendly, and robust multi-compound analytical methods for assessing biochemical changes in maize seedling leaves resulting from the treatment of aluminium oxide nanoparticles. The recorded fluorescence spectrum of the leaves shows that the treatment of different concentration of aluminium oxide nanoparticles decreases the chlorophyll content as observed by the increase in fluorescence emission intensity ratio (FIR = I/I). The analysis of ultraviolet-visible absorption measurements reveals that the amount of chlorophyll a, chlorophyll b, total chlorophyll and carotenoid decrease for treated plants with respect to untreated seedlings.
View Article and Find Full Text PDFFrom indoors to outdoors: Impact of waste anesthetic gases on occupationally exposed professionals and related environmental hazards - a narrative review and update.
Environ Toxicol Pharmacol
December 2024
São Paulo State University (UNESP), Medical School, Division of Anesthesiology, GENOTOX Lab., Botucatu, São Paulo, Brazil. Electronic address:
Waste anesthetic gases (WAGs) are trace-concentration inhaled anesthetics that exist worldwide because they are released into the ambient air of operating rooms (ORs) and post-anesthesia care units. WAGs cause indoor contamination, especially in ORs lacking proper scavenging systems, and occupational exposure, while promoting climate change through greenhouse gas/ozone-depleting effects. Despite these controversial features, WAGs continue to pose occupational health hazards.
View Article and Find Full Text PDFSynergistic effects of PS-NPs and Cd on ovarian toxicity in adolescent rats: Ferroptosis by induction of mitochondrial redox imbalance via the SIRT3-SOD2/Gpx4 pathway.
Ecotoxicol Environ Saf
December 2024
The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang 330000, China. Electronic address:
Nanoplastics (NPs) are an emerging class of pollutants. They can act as a"Trojan horse" to change the bioavailability and toxicity of heavy metals in the environment. However, research on the combined toxicity of heavy metals and NPs is scarce, especially during the critical developmental period of adolescence.
View Article and Find Full Text PDFUnveiling the impact of polystyrene and low-density polyethylene microplastics on arsenic toxicity in earthworms.
J Environ Manage
December 2024
College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; Beijing Key Laboratory of Biodiversity and Organic Farming, Beijing, 100193, China; State Key Laboratory of Nutrient Use and Management, Beijing, 100193, China; Key Laboratory of Plant-Soil Interactions, Ministry of Education, Beijing, 100193, China. Electronic address:
The high global production combined with low recycling rates of polystyrene (PS) and low-density polyethylene (LDPE) contributes to the abundance of these commonly used plastics in soil, including as microplastics (MPs). However, the combined effects of MPs and heavy metals, such as arsenic (As) on earthworms are poorly understood. Here, we show that neither PS nor LDPE altered the effects of As on the survival, growth, and reproduction of the earthworm Eisenia fetida.
View Article and Find Full Text PDFEffects of naturally aged microplastics on arsenic and cadmium accumulation in lettuce: Insights into rhizosphere microecology.
J Hazard Mater
December 2024
Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China. Electronic address:
Naturally aged microplastics (NAMPs) are commonly found in farmland soils contaminated with heavy metals (HMs), such as arsenic (As) and cadmium (Cd); yet their combined effects on soil-plant ecosystems remain poorly understood. In this study, we investigated the toxic effects of NAMPs and As-Cd on lettuce, considering the influence of earthworm activity, and examined changes in As-Cd bioavailability in the rhizosphere. Four experimental systems were established: soil-only, soil-lettuce, soil-earthworms, and soil-lettuce-earthworms systems, with four NAMPs concentrations (0, 0.
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