Vershinin, V. I. Isachenko, N. A. Brilenok, N. S.
Published in
Journal of Analytical Chemistry
Determination of the total concentration (cΣ) of similar analytes recalculated to a standard substance Xst is a widely used but metrologically incorrect procedure leading to a high uncertainty of the results of analysis. An algorithm is proposed for the interval estimation of cΣ without recalculating to the concentration of Xst. The algorithm takes...
Amelin, V. G. Lavrukhin, D. K.
Published in
Journal of Analytical Chemistry
A method has been developed for the determination of trace amounts of seven nitrosoamines (N-nitrosodimethylamine, N-nitrosomethylethylamine, N-nitrosodiethylamine, N-nitrosopyrrolidine, N-nitrosodipropylamine, N-nitrosopiperidine, and N-nitrosodibutylamine) in food using gas-liquid chromatography with a mass-spectrometric detector. The optimum chr...
Nayanova, E. V. Sergeev, G. M. Elipasheva, E. V.
Published in
Journal of Analytical Chemistry
A procedure is developed for the selective photometric determination of selenium(IV) in bottled drinking water by the oxidation of Methylene Blue in 1 M HCl to colorless decomposition products and of selenium(VI) by its interaction with the specified reagent at pH 5–6 with the formation of a colored ion pair. The limits of detection are 1 and 0.8 µ...
Tolmacheva, V. V. Apyari, V. V. Kochuk, E. V. Dmitrienko, S. G.
Published in
Journal of Analytical Chemistry
We summarize data published over the last five years on the approaches and methods used in the synthesis of magnetic adsorbents based on iron oxide nanoparticles. A classification of magnetic adsorbents is proposed; examples of their use in the magnetic solid-phase extraction of organic compounds in the analysis of environmental samples, food, and ...
Zenkevich, I. G. Fakhretdinova, L. N.
Published in
Journal of Analytical Chemistry
The analysis of published data shows that the results of the gas chromatographic determination of low-volatile polar aliphatic dicarboxylic acids are rather poorly reproducible. A considerable part of the published values of their retention indices appears to be erroneous. The experimental verification of the capabilities of gas chromatography and ...
Kuraeva, Yu. G. Kamenskaya, A. I. Vasil’eva, M. V. Stupnikov, A. A. Onuchak, L. A.
Published in
Journal of Analytical Chemistry
The electrophoretic behavior of hypotensive drugs (bisoprolol and atenolol) under the conditions of varied pH, ionic strength of the leading electrolyte, applied voltage, and temperature has been studied. Possibilities of the application of capillary electrophoresis to the determination of the identity, purity, and amount of the studied drugs in ra...
Hasanzadeh, Mohammad Pournaghi-Azar, Mohammad Hossein Shadjou, Nasrin Jouyban, Abolghasem
Published in
Journal of Analytical Chemistry
Magnetic mesoporous silica was used for electrode modification and electro-oxidation of some cardiovascular drugs. The modified electrode was applied for detection of cardiovascular drugs using cyclic voltammetry, chronoamperometry, and differential pulse voltammetry. The modified electrode shows many advantages as an electrochemical sensor such as...
Farina, Yang Abdullah, Pauzi Bin Bibi, Nusrat
Published in
Journal of Analytical Chemistry
Pesticides are necessary for increasing agricultural productivity; however, their enormous use contaminates air, water and food. Among various organic pesticides, organochlorine pesticides (OCPs) are most persistent; and though their use is banned, they are still used illegally. In contrast to OCPs, organophosphorous pesticides are less persistent ...
Zherebker, A. Ya. Perminova, I. V. Konstantinov, A. I. Volikov, A. B. Kostyukevich, Yu. I. Kononikhin, A. S. Nikolaev, E. N.
Published in
Journal of Analytical Chemistry
Humic substances (HS) have been extracted from fresh waters on macroporous adsorbents of different types, Amberlite XAD-8 resin and Bond Elute PPL solid-phase cartridge. Comparative analysis of the extracted samples by ultra-high resolution mass spectrometry demonstrated selectivity of the selected adsorbents to the components of the molecular asse...
Devoy, Jérôme Brun, Emilie Cosnefroy, Anne Disdier, Clémence Melczer, Mathieu Antoine, Guillaume Chalansonnet, Monique Mabondzo, Aloïse
Published in
Journal of Analytical Chemistry
In order to draw appropriate conclusions about the possible adverse biological effects of titanium dioxide nanoparticles (TiO2—NPs), the so-called “dose?effect” relationship must be explored. This requires proper quantification of titanium in complex matrices such as animal organs for future toxicological studies. This study presents the method dev...
