Results 11 to 20 of about 2,109,023 (306)

Micelle-enhanced flow injection analysis

open access: yesReviews in Analytical Chemistry, 2018
Surface-active agents are organic compounds of amphiphilic nature. When the concentration of surfactants is higher than a certain value, the monomers adhere to form well-defined aggregates known as micelles.
Abdeldaim Dalia T., Mansour Fotouh R.
doaj   +1 more source

Determinação de paracetamol pela inibição da reação quimiluminescente do luminol-hipoclorito de sódio em um sistema de análise em fluxo empregando o conceito de multicomutação Determination of paracetamol using a flow injection analysis with multicommutation and chemiluminescence detection

open access: yesQuímica Nova, 2009
A flow injection chemiluminescence method for the determination of paracetamol in pharmaceutical formulations is described. It is based on the consumption of the sodium hypochlorite by paracetamol and decreases of the analytical signal.
Geiser G. Oliveira   +5 more
doaj   +1 more source

Carbon paste electrodes in electroanalytical chemistry [PDF]

open access: yesJournal of the Serbian Chemical Society, 2009
An overview is given dealing with the applications of carbon paste electrodes in equilibrium potentiometry as well as in electrochemical stripping analysis using both voltammetric and potentiometric modes.
Vytřas Karel   +2 more
doaj   +1 more source

Determinação espectrofotométrica por injeção em fluxo de glifosato em formulações comerciais de herbicidas

open access: yesQuímica Nova, 2012
A flow injection spectrophotometric procedure for the determination of glyphosate in commercial formulations of herbicides is proposed. The determination is based on the reaction of glyphosate and p-dimethylaminocinnamaldehyde, in acid medium, yielding a
Aline Santana da Silva   +2 more
doaj   +1 more source

Application of a novel metabolomic approach based on atmospheric pressure photoionization mass spectrometry using flow injection analysis for the study of Alzheimer's disease.

open access: yesTalanta: The International Journal of Pure and Applied Analytical Chemistry, 2015
The use of atmospheric pressure photoionization is not widespread in metabolomics, despite its considerable potential for the simultaneous analysis of compounds with diverse polarities.
R. González-Domínguez   +2 more
semanticscholar   +1 more source

Biosensors and flow injection analysis [PDF]

open access: yesCurrent Opinion in Biotechnology, 1992
Combining flow injection analysis with a biosensor is a novel biosensing process which has allowed speedy and accurate analysis. Diagnostic analysis is the most important application for biosensing flow injection analysis, but other applications include bioprocess monitoring, analysis of food and agricultural products, as well as environmental analysis.
Karube, Isao, Chen, Chien-Yuan
openaire   +2 more sources

Spectrophotometric determination of ammonia nitrogen in water by flow injection analysis based on NH3- o-phthalaldehyde -Na2SO3 reaction

open access: yes, 2016
The product of the NH 3 - o- phthalaldehyde (OPA) -Na 2 SO 3 reaction is rose red at pH more than 10.4, and its maximum absorption wavelength is 550 nm. Based on this, a novel spectrophotometric method with flow injection analysis has been established to
Liang Ying   +4 more
semanticscholar   +1 more source

Boron Doped Diamond Electrodes in Flow-Based Systems

open access: yesFrontiers in Chemistry, 2019
Boron-doped diamond (BDD) electrodes present several notable properties, such as the largest potential window of all electrode materials (especially in anodic potentials), low background and capacitive currents, reduced fouling compared to other ...
Jhonys Machado Freitas   +3 more
doaj   +1 more source

A versatile injection system for flow‐injection analysis [PDF]

open access: yesJournal of Analytical Methods in Chemistry, 1992
Analyser injection systems based on the principle of flow‐injection analysis depend on the technique used. They generally take the form of an injection loop valve; the injected sample volume is determined by the volume of the valve. Injection systems are seldom designed with a time factor to define this volume.
Sollacaro, M., Dittmar, A., Later, R.
openaire   +2 more sources

Upacicalcet: A Novel Intravenous Calcimimetic Agent for Patients Undergoing Hemodialysis With Secondary Hyperparathyroidism

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Secondary hyperparathyroidism (SHPT) is a common complication in patients receiving maintenance dialysis, driven by calcium and phosphate metabolism disturbances. Calcimimetics are central to the management of SHPT by enhancing calcium‐sensing receptor sensitivity and reducing parathyroid hormone secretion.
Fumihiko Koiwa   +3 more
wiley   +1 more source

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