We report a protocol of CdS-labeled sandwich-type amperometric bioanalysis with high sensitivity, on the basis of simultaneous chemical-dissolution/cathodic-enrichment of the CdS quantum dot biolabel and anodic stripping voltammetry (ASV) detection of Cd directly on the bioelectrode. We added a microliter droplet of 0.1 M aqueous HNO₃ to dissolve CdS on the bioelectrode and simultaneously achie...

Simultaneous SAXS/WAXS studies elucidate passive surface film growth during formation of nanoporous gold by electrolytic dealloying in HClO 4 , but not HNO 3 . This hampers kinetics and slows ligament growth/coarsening.

Electrothermal atomic absorption spectrometry (ETAAS) is considered the most common and advanced technique to determine trace lithium in biological fluids. However, chloride existing in samples has been reported to create serious interferences. Nitric acid was verified as a chemical modifier to eliminate the interference of chloride in determining trace lithium in urine samples and the possible...

Recent advances in the coordination chemistry studies of the redox-interconverted ligands NO, NO and NO(HNO), particularly related to the pentacyanoferrate(II) and (III) fragments, are summarized with mention of structural, spectroscopic (IR and EPR) and DFT calculations. The chemistry of bound NO is presented with an emphasis on the mechanisms of the nucleophilic addition reactions of OH, amin...

A lignocellulose/montmorillonite (LMT) nanocomposite was prepared as a reusable adsorbent for cobalt(II) ions, and characterized by nitrogen (N₂) adsorption/desorption isotherm, X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), Transmission Electron Microscopy (TEM), and Fourier Transform Infrared Spectroscopy (FTIR). LMT exhibited efficient adsorption of cobalt ions (Co(II)), and th...