Results 11 to 20 of about 13,501,965 (257)

Kinetic determination of rutin [PDF]

open access: yesJournal of the Serbian Chemical Society, 2001
A kinetic method is described for the determination of rutin based on its inhibitory effect on the Fe(II)-AA catalysis of the oxidation of C6H5COONa with hydrogen peroxide. Detection limit of this method is 0.16 ng cm-3. The relative error ranges between
D. A. KOSTIC   +3 more
doaj   +3 more sources

Method for determining iodine-127 in soils

open access: yesSoil Science Annual, 2016
A method was presented for determining the content of stable iodine-127 (127I) in soil samples. The method is based on the reaction rate of cerium cation (IV) with arsene (III) anion.
Tołoczko Wojciech
doaj   +1 more source

Kinetic determination of morin nanoamounts [PDF]

open access: yesJournal of the Serbian Chemical Society, 2004
A kinetic-spectrophotometric method is proposed for the determination of morin. The method is based on the inhibition effect of morin on the oxidation of C6H5COONa by hydrogen peroxide in the presence of the complex Fe(II)-AA(ascorbic acid), which acts ...
G. Z. MILETIC, S. S. MITIC, D. A. KOSTIC
doaj   +3 more sources

Determination of 1-chloro-2,3-epoxypropane in order to assess the working environment

open access: yesMedycyna Pracy, 2020
Background 1-Chloro-2,3-epoxypropane, known as epichlorohydrin (ECH), is a colorless liquid used in the production of epoxy resins, synthetic glycerine, elastomers, glycidyl ethers, surfactants, polyamide-epichlorohydrin resins and others ...
Anna Jeżewska   +2 more
doaj   +1 more source

Determination of Organic Micropollutants in Water Using Gas Chromatography-Mass Spectrometry

open access: yesProceedings, 2019
In this study a determination method has been developed for seven different micropollutants, that were selected to represent different compound groups.
Marek Król, Mariusz Dudziak
doaj   +1 more source

PCC Properties to Support W/C Determination for Durability [PDF]

open access: yes, 2012
The fresh concrete water-cement ratio (w/c) determination tool is urgently needed for use in the QC/QA process at the job site. Various techniques have been used in the past to determine this parameter.
Yohannes, Yohannes, Olek, Jan
core   +1 more source

Development and validation of high-performance liquid chromatography methodology for quantify determination of azodicarbonamide in the workplace air

open access: yesMedycyna Pracy
Background Occupational exposure to azodicarbonamide (ADCA) can occur via the respiratory tract or through skin in workplaces, e.g., in the production of plastics and rubber where it is used as a foaming agent or a porosity-increasing agent.
Joanna Kowalska, Małgorzata Pośniak
doaj   +1 more source

On issue of clarifying the method for determining the ecologically permissible application rate of organic fertilizer

open access: yesМелиорация и гидротехника
Purpose: to clarify the method for determining the ecologically permissible application rate of sewage sludge (hereinafter referred to as SWS) or fertilizers made from them using mathematical tools. Materials and methods.
Svetlana A. Manzhina, Lev I. Rusin
doaj   +1 more source

Trends of Initial Orbit Determination Accuracy for Time Interval Change Between Three Pairs of Measurement Datas [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2009
Gauss and Laplace methods for initial orbit determination (IOD) are classical orbit determination tools and have been used very efficiently in optical satellite surveillance system.
Okjun Hwang, Jung Hyun Jo
doaj   +1 more source

Analytical application of the reaction system phenyl fluorone-hydrogen peroxide for the kinetic determination of cobalt and tin traces by spectrophotometry in ammonia buffer media [PDF]

open access: yesHemijska Industrija, 2013
The present paper describes two new, simple, rapid, selective and sensitive kinetic spectrophotometric methods for Co(II) and Sn(II) determination in solution at room temperature, based on their effect on phenyl fluorone (PF) oxidation by ...
Rančić Sofija M.   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy