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2D Electrodes From Functionalized Graphene for Rapid Electrochemical Gold Extraction and Reduction From Electronic Waste.
Adv Sci (Weinh)
November 2024
Institute for Functional Intelligent Materials, National University of Singapore, Singapore, 117544, Singapore.
Electronic waste (e-waste) contains substantial quantities of valuable precious metals, particularly gold (Au). However, inefficient metal recovery leads to these precious metals being discarded in landfills, causing significant water and environmental contamination. This study introduces a two-dimensional (2D) electrode with a layered graphene oxide membrane functionalized by chitosan (GO/CS).
View Article and Find Full Text PDFHyponatremia in Critically Ill Patients Due to Continuous Venovenous Hemofiltration With Diluted Sodium Citrate.
ASAIO J
October 2024
From the Department of Medicine and Surgery, University of Milan-Bicocca, Monza, Italy.
Continuous venovenous hemofiltration (CVVH) is frequently performed in critically ill patients using diluted citrate for regional anticoagulation. The impact of this renal replacement strategy on plasma sodium has not been evaluated yet. Our aim was therefore to assess the period prevalence of hyponatremia (sodium <135 mmol/L) during CVVH and discuss possible underlying mechanisms.
View Article and Find Full Text PDFAnalytical evaluation of a direct ion-selective-based analyser: Still gaps to close.
Clin Biochem
December 2024
Department of Laboratory Medicine, Ghent University Hospital, Ghent, Belgium; Department of Diagnostic Sciences, Ghent University, Ghent, Belgium.
Introduction: Discrepancies between electrolyte concentrations determined by blood gas analysers (BGA) and core-lab chemistry analysers may create confusion in clinical practice. This problem is rooted in the different ion-selective electrode (ISE) methodologies that are used. Whilst most available chemistry analysers use indirect ISE, we evaluated the analytical performance of the new automated chemistry analyser Biossays™ E6 (Snibe), equipped with direct ISE, for the determination of sodium (Na), potassium (K), chloride (Cl), ionized calcium (iCa) and pH.
View Article and Find Full Text PDFHigh-Performance Electrochemical Creatinine Sensors Based on β-Lead Dioxide/Single-Walled Carbon Nanotube Electrodes.
Anal Chem
October 2024
Department of Bionano Engineering, Center for Bionano Intelligence Education and Research, Hanyang University, Ansan 426-791, Republic of Korea.
Article Synopsis
- Creatinine is a key indicator of kidney function and muscle metabolism, prompting the development of a new type of sensitive sensor for its detection using β-lead dioxide and carbon nanotubes.
- The innovative β-PbO/CNT ion-selective electrode effectively measures creatinine through a fast enzymatic reaction, yielding results in about 5 minutes with high sensitivity and low limits of detection.
- The sensors demonstrated impressive selectivity against various substances, consistent performance in repeated tests, and successful application in human serum, confirming their effectiveness for clinical use.
Metal-ion-selective chiral gelation of a mannose-grafted polyoxometalate cluster.
Chem Commun (Camb)
October 2024
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China.
A series of supramolecular hydrogels are constructed through selective metal coordination to a mannose-grafted Anderson-type polyoxometalate under sonication. The crosslinked helical nanofibers in the hydrogels are characterized by the synthesized hybrid clusters adopting a half-overlapped head-to-tail packing while the chirality of the mannose group directs the preferential assembly.
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