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Evaluation of hazardous substances emitted during mask use.
Environ Int
January 2025
Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea; Institute of Health and Environment, Seoul National University, Seoul, Republic of Korea. Electronic address:
This study evaluated the inhalation of mask-derived materials by simulating real breathing conditions and examined how the amount of inhaled materials varies with breathing flow rate and duration. Three types of non-certified reusable masks and two types of certified disposable masks were selected. For each mask, five different hazardous materials were captured and analyzed in three replicates with two breathing flow rates of 30 L/min and 85 L/min and two breathing time combinations of 15 min and 60 min.
View Article and Find Full Text PDFElectrochemical Study and Determination of Homovanillic Acid, the Final Metabolite of Dopamine, Using an Unmodified Disposable Electrode.
Molecules
January 2025
Department of Analytical Chemistry and Physical Chemistry, Faculty of Chemistry, University of Bucharest, Panduri Avenue 90-92, District 5, 050663 Bucharest, Romania.
This paper summarizes the main findings of a study which aimed to examine the electrochemical oxidation of homovanillic acid (HVA), the final metabolite of dopamine. A pencil graphite electrode (PGE) was used as working electrode and the measurements were performed by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The type and the composition of the graphite leads used as PGE, the pH of the supporting electrolyte, as well as the scan rates were optimized by CV.
View Article and Find Full Text PDFElectrochemical Determination of Doxorubicin in the Presence of Dacarbazine Using MWCNTs/ZnO Nanocomposite Modified Disposable Screen-Printed Electrode.
Biosensors (Basel)
January 2025
Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman 76318-85356, Iran.
In the current work, the MWCNTs/ZnO nanocomposite was successfully synthesized using simple method. Then, FE-SEM, XRD, and EDX techniques were applied for morphological and structural characterization. Afterward, a sensitive voltammetric sensor based on modification of a screen-printed carbon electrode (SPCE) using MWCNTs/ZnO nanocomposite was developed for the determination of doxorubicin in the presence of dacarbazine.
View Article and Find Full Text PDFMicrofibrillated cellulose-based colorimetric sensor strips for detecting total iron in water.
Int J Biol Macromol
January 2025
Institute of Chemistry, Federal University of Bahia (UFBA), 40170-280 Salvador, BA, Brazil. Electronic address:
Microfibrillated cellulose (MFC), a sustainable material derived from biomass, stands out as an environmentally friendly alternative for developing chemical sensors owing to its advantageous properties, including high porosity, surface area, and available surface functional groups. Herein, we propose a simple and low-cost strategy for developing cellulose-based strips for the colorimetric detection of total iron in water. The strips were prepared by functionalizing MFC casting membranes with 1-(2-Thiazolylazo)-2-naphthol (TAN), which was then characterized by structural and morphological techniques.
View Article and Find Full Text PDFComparison of Kinetic, Automated, Tangent Screen, and Novel Disposable Perimetry for the Evaluation of Dermatochalasis and Blepharoptosis.
Ophthalmic Plast Reconstr Surg
January 2025
Cleveland Clinic, Cole Eye Institute, Cleveland, OH.
Purpose: To compare a novel disposable ptosis visual field device to conventional perimetry devices for the evaluation of dermatochalasis and/or blepharoptosis.
Methods: Forty patients from a single academic center participated in this prospective, observational study. Patients with dermatochalasis (skin resting on the eyelashes) and/or blepharoptosis (marginal reflex distance 1 ≤2 mm) were included.
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