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Assessment of environmental and health risks of potentially toxic elements associated with desert dust particles affected by industrial activities in Isfahan metropolitan.
Sci Rep
October 2024
Department of Natural Resources, Isfahan University of Technology, Isfahan, 84156-83111, Iran.
Dust particles and their associated compounds can adversely affect human health and ecosystems. The aim of this study was to investigate the concentration, health, and ecological risks of selected potentially toxic elements (e.g.
View Article and Find Full Text PDFPreparation and characterization of structural and antifouling properties of chitosan/polyethylene oxide membranes.
Int J Biol Macromol
October 2024
Bioengineering Laboratory, Department of Textile and Fibre Engineering, Indian Institute of Technology, New Delhi 110016, India. Electronic address:
It aims to prepare the chitosan (CS) and polyethylene oxide (PEO) hydrogel membranes with different CS/PEO blend ratios (100:0, 95:5, 90:10, 80:20 and 70:30) via solvent casting. The physicochemical properties of these membranes were investigated using various characterization techniques: Fourier Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), atomic force microscopy (AFM), energy dispersive X-ray (EDX), contact angle, and tensile testing. The interaction of PEO and chitosan was investigated by DSC in terms of freezing bound, freezing free, and non-freezing PEO fraction.
View Article and Find Full Text PDFp‑Phenylenediamine antioxidants in PM: New markers for traffic in positive matrix factorization source apportionment.
J Hazard Mater
September 2024
Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China. Electronic address:
The extensive utilization of rubber-related products can lead to a substantial release of p-phenylenediamine (PPD) antioxidants into the environment. In recent years, studies mainly focus on the pollution characteristics and health risks of PM-bound PPDs. This study presents long-time scale data of PPDs and N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine quinone (6PPD-Q) in PM and proposes the innovative use of PPDs as new markers for vehicular emissions in the Positive Matrix Factorization (PMF) source apportionment.
View Article and Find Full Text PDFLoosely Bounded Exciton with Enhanced Delocalization Capability Boosting Efficiency of Organic Solar Cells.
Small
November 2024
State Key Laboratory of Silicon and Advanced Semiconductor Materials, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China.
In organic solar cells (OSCs), electron acceptors have undergone multiple updates, from the initial fullerene derivatives, to the later acceptor-donor-acceptor type non-fullerene acceptors (NFAs), and now to Y-series NFAs, based on which efficiencies have reached over 19%. However, the key property responsible for further improved efficiency from molecular structure design is remained unclear. Herein, the material properties are comprehensively scanned by selecting PCBM, IT-4F, and L8-BO as the representatives for different development stages of acceptors.
View Article and Find Full Text PDFIs paper bag plastic-free, without plastic in colourful logo area?
J Hazard Mater
June 2024
Global Centre for Environmental Remediation (GCER), University of Newcastle, Callaghan, NSW 2308, Australia; CRC for Contamination Assessment and Remediation of the Environment (CRC CARE), University of Newcastle, Callaghan, NSW 2308, Australia.
The concern over plastic contamination has led to bans on plastic shopping bags, often replaced by paper ones. However, logos painted or printed on paper bags may still contain plastics, as investigated herein. In some logos, for example, white pigment of titanium dioxide (TiO) nanoparticles are bound with plastic binder onto the cellulose surface of the paper.
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