Results 11 to 20 of about 650,345 (262)

Flow-Injection Amperometric Determination of Tacrine based on Ion Transfer across a Water–Plasticized Polymeric Membrane Interface

Sensors, 2007
A flow-injection pulse amperometric method for determining tacrine, based onion transfer across a plasticized poly(vinyl chloride) (PVC) membrane, was developed. Afour-electrode potentiostat with ohmic drop compensation was used, while a flow-throughcell
C. Rueda, Joaquin A. Ortuño
doaj   +1 more source

The Use of Flow-Injection Analysis with Chemiluminescence Detection of Aqueous Ferrous Iron in Waters Containing High Concentrations of Organic Compounds

Sensors, 2009
An evaluation of flow-injection analysis with chemiluminescence detection (FIA-CL) to quantify Fe2+(aq) in freshwaters was performed. Iron-coordinating and/or iron-reducing compounds, dissolved organic matter (DOM), and samples from two natural water ...
Carrick M. Eggleston, Patricia J. S. Colberg, B. Patrick Sullivan, Christopher J. Borman   +3 more
doaj   +1 more source

Batch and Flow-Injection Analysis of Lauryl Sulfate in Industrial Products and Wastes Using Membrane Sensors Based on Methyltrioctylammonium Chloride

International Journal of Electrochemical Science, 2020
Liquid polymeric membrane sensors based on the hydrophobic cationic surfactant methyltrioctayammonium chloride (MTOAC) are described herein for batch and flow injection analysis of sodium lauryl sulfate (SLS) surfactant.
Hisham S.M. Abd-Rabboh
doaj   +1 more source

Biosensors and flow injection analysis [PDF]

Current 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

Novel Approach to Sample Preconcentration by Solvent Evaporation in Flow Analysis

Molecules, 2020
A preconcentration module operated in flow mode and integrated with a sequential injection system with spectrophotometric detection was developed.
Justyna Paluch, Joanna Kozak, Marcin Wieczorek, Michał Woźniakiewicz, Małgorzata Gołąb, Ewelina Półtorak, Sławomir Kalinowski, Paweł Kościelniak   +7 more
doaj   +1 more source

Using Tip Injection to Stability Enhancement of a Transonic Centrifugal Impeller with Inlet Distortion [PDF]

Journal of Applied Fluid Mechanics, 2022
This paper aims to understand the effects of circumferential inlet distortion and tip injection on a transonic impeller performance and flow field. For distorted inflow, the impeller is subjected to a stationary 120-degrees circumferential total pressure
Z. Jahani, H. Khaleghi, S. Tabejamaat
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

Química 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, Bruno C. Janegitz, Marina B. Batistão, Fernanda H. Salami, Orlando Fatibello-Filho, Oldair D. Leite   +5 more
doaj   +1 more source

Automated Systems with Fluorescence Detection for Metal Determination: A Review

Molecules
Industrialization has led to environmental pollution with various hazardous chemicals including pollution with metals. In this regard, the development of highly efficient analytical methods for their determination has received considerable attention to ...
Arina Skok, Natalia Manousi, Aristidis Anthemidis, Yaroslav Bazel   +3 more
doaj   +1 more source

Amperometric Detection of Biogenic Amines at the Electrode Modified by Gold Nanoparticles under the Conditions of Flow-Injection Analysis and High Performance Liquid Chromatography [PDF]

Учёные записки Казанского университета: Серия Естественные науки, 2015
Gold nanoparticles electrodeposited on the glassy carbon electrode show catalytic activity in the electrooxidation of biogenic amines (tyramine, dopamine, epinephrine, and serotonin). Catalysis consists in decreasing of overvoltage of substrate oxidation
L.G. Shaidarova, I.A. Chelnokova, M.A. Il’ina (Degteva), A.V. Gedmina, H.C. Budnikov   +4 more
doaj  

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

Química 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, Leonardo Pezza, Helena Redigolo Pezza   +2 more
doaj   +1 more source