Results 21 to 30 of about 455 (167)

Determination of heavy metals at the electrochemically reduced graphene oxide mercury film electrode (ERGO-HgF-PGE) using adsorptive stripping voltammetry [PDF]

open access: yes, 2020
>Magister Scientiae - MScThis work reports the use of a pencil graphite electrode (PGE) as inexpensive and sensitive electrochemical sensing platform fabricated by using electrochemically reduced graphene oxide (ERGO) in conjunction with an in-situ ...
Sanga, Nelia Abraham
core   +1 more source

New Analog of Cupferron

open access: yesAnalytical Chemistry, 1953
R. E. Oesper, R. E. Fulmer
openaire   +2 more sources

Nanomaterials Developed by Processing Iron Coordination Compounds for Biomedical Application

open access: yesJournal of Nanomaterials, Volume 2019, Issue 1, 2019., 2019
The iron oxides, widespread in nature, are used in numerous applications in practice due to their well‐known properties. These properties can be modified by size lowering at nanoscale. Some applications, such as biomedical, require a rigorous selection of nanoparticles by size, shape, and surface functionality.
Mihail Iacob   +6 more
wiley   +1 more source

[Retracted] Nitroxyl (HNO): A Reduced Form of Nitric Oxide with Distinct Chemical, Pharmacological, and Therapeutic Properties

open access: yesOxidative Medicine and Cellular Longevity, Volume 2016, Issue 1, 2016., 2016
Nitroxyl (HNO), the one‐electron reduced form of nitric oxide (NO), shows a distinct chemical and biological profile from that of NO. HNO is currently being viewed as a vasodilator and positive inotropic agent that can be used as a potential treatment for heart failure.
Mai E. Shoman, Omar M. Aly, Lezanne Ooi
wiley   +1 more source

The Effect of Solvents, Acetone, Water, and Ethanol, on the Morphological and Optical Properties of ZnO Nanoparticles Prepared by Microwave

open access: yesJournal of Nanotechnology, Volume 2012, Issue 1, 2012., 2012
HDA‐capped ZnO nanoparticles were prepared by solvothermal method using solvents of different polarities. A number of parameters were kept constant such as temperature, pressure, time, and pH while solvents were varied, that is, water, ethanol, and acetone. The TEM was used for the structural properties and morphologies such as spheres, mixture of rods,
Phindile B. Khoza   +3 more
wiley   +1 more source

Speciation of Chromium in Soil and Sludge in the Surrounding Tannery Region, Ranipet, Tamil Nadu

open access: yesInternational Scholarly Research Notices, Volume 2011, Issue 1, 2011., 2011
The distribution and mobility of chromium in the soils and sludge surrounding a tannery waste dumping area was investigated to evaluate its vertical and lateral movement of operational speciation which was determined in six steps to fractionate the material in the soil and sludge into (i) water soluble, (ii) exchangeable, (iii) carbonate bound, (iv ...
Badal Kumar Mandal   +4 more
wiley   +1 more source

Ultraviolet and Infrared Spectra of Cupferron and Neocupferron [PDF]

open access: yesBulletin of the Chemical Society of Japan, 1972
Abstract N-nitroso-N-phenylhydroxylamine, N-nitroso-α-naphthylhydroxylamine, and their sodium salts have been prepared from the ammonium salt of N-nitroso-N-phenylhydroxylamine (cupferron) and the ammonium salt of N-nitroso-α-naphthylhydroxylamine (neocupferron) respectively.
Tetsuhiko Yoshimura   +2 more
openaire   +1 more source

Superparamagnetic Ironoxide Nanoparticles via Ligand Exchange Reactions: Organic 1,2‐Diols as Versatile Building Blocks for Surface Engineering

open access: yesJournal of Nanomaterials, Volume 2008, Issue 1, 2008., 2008
A method for the preparation of ligand‐covered superparamagnetic iron oxide nanoparticles via exchange reactions is described. 1,2‐diol‐ligands are used to provide a stable binding of the terminally modified organic ligands onto the surface of γ‐Fe2O3‐nanoparticles (r ~ 4 nm).
Wolfgang H. Binder   +3 more
wiley   +1 more source

LabVIEW‐based sequential‐injection analysis system for the determination of trace metals by square‐wave anodic and adsorptive stripping voltammetry on mercury‐film electrodes

open access: yesJournal of Analytical Methods in Chemistry, Volume 25, Issue 6, Page 133-140, 2003., 2003
The development of a dedicated automated sequential‐injection analysis apparatus for anodic stripping voltammetry (ASV) and adsorptive stripping voltammetry (AdSV) is reported. The instrument comprised a peristaltic pump, a multiposition selector valve and a home‐made potentiostat and used a mercury‐film electrode as the working electrodes in a thin ...
Anastasios Economou   +1 more
wiley   +1 more source

Determination of cadmium by flame-atomic absorption spectrometry after preconcentration on silica gel modified with cupferron [PDF]

open access: yes, 2015
A method for the determination of cadmium by flame atomic absorption spectrometry (FAAS) after its preconcentration onto a column containing silica gel modified with cupferron was developed.
Bortoleto, Gisele G.   +2 more
core   +1 more source

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