Results 71 to 80 of about 4,449 (164)

Применение вольтамперометрических методов для контроля биологических объектов на содержание микроэлементов [PDF]

, 2011
На основе литературных источников рассмотрены возможности применения вольтамперометрических методов для контроля биологических объектов на содержание основных микроэлементов.
Дубова, Надежда Михайловна, Захарова, Эльза Арминовна, Пикула, Нина Павловна, Пичугина, Валентина Максимовна, Слепченко, Галина Борисовна, Филичкина, Ольга Григорьевна, Черемпей, Елена Геннадьевна, Щукина, Татьяна Иосифовна   +7 more
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A screen-printed carbon electrode modified with a chitosan-based film for in situ heavy metal ions measurement [PDF]

, 2018
SEM images and FTIR data of the working electrode surface showed that Mn+ ions were adsorbed on chitosan (Chit) and crosslinked chitosan-carbon nanotube (Chit-CNT) films.
Wang, J. (Je-Chuang), Wu, K. (Kuo-Hui), Yan, B. (Bing-De), Yu, S. (Shin-Yi)   +3 more
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Adsorptive stripping voltammetry of vitamin B12.

BUNSEKI KAGAKU, 1994
Vitamin B12 yields a polarographic catalytic wave at ca.-1.6 V vs. SCE. Vitamin B12 in river-water samples was determined by adsorptive stripping voltammetry in order to use this catalytic wave. The supporting electrolyte used was 0.01 M Na2HPO4+0.01 M NaH2PO4. A preconcentration potential of -1.2 V was applied for 5 min.
openaire   +1 more source

Simultaneous determination of textile dyes by Adsorptive Cathodic Stripping Voltammetry - doi: 10.4025/actascitechnol.v35i2.16595

Acta Scientiarum: Technology, 2013
The Adsorptive Cathodic Stripping Voltammetry (ACSV - differential pulse) proved to be an efficient method in the separation and quantification of two reactive textile dyes, Procion Yellow (PY) and Procion Red (PR), each containing two azo groups as ...
Lidia Brizola Santos, Fernando Santos Domingues, Fernando Rosseto, Vitor de Cinque Almeida, Juliana Carla Garcia, Nilson Evelázio de Souza   +5 more
doaj   +1 more source

Label-free electrochemical monitoring of DNA ligase activity [PDF]

, 2008
This study presents a simple, label-free electrochemical technique for the monitoring of DNA ligase activity. DNA ligases are enzymes that catalyze joining of breaks in the backbone of DNA and are of significant scientific interest due to their essential
Ahel I., Bellamy S. R., Borodina T. A., Bullard D. R., Cahova-Kucharikova K., Cao W. G., Doherty A. J., Fadrna R., Fojta M., Fojta M., Fojta M., Fojta M., Fojta M., Fojta M., Friedberg E. C., Gowers D. M., Heiter D. F., Kucharikova K., Liu L. F., Palecek E., Pascal J. M., Rass U., Schrock R. D., Scott B. O. S., Shuman S., Tomkinson A. E., Vacek J., Wilkinson A., Wilkinson A., Zauner G.   +29 more
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Simultaneous Electrochemical Preconcentration and Determination of Dopamine and Uric acid by Square-Wave Adsorptive Stripping Voltammetry using a Poly(Safranine O)- Modified Glassy Carbon Electrode

International Journal of Electrochemical Science, 2014
In this paper we present a new method that allows for the simultaneous identification and quantification of dopamine(DA) and uric acid (UA) by square-wave adsorptive stripping voltammetry.
Hayati Filik, Asiye Aslihan Avan, Sevda Aydar, Rabia Bozdoğan Arpaci   +3 more
doaj   +1 more source

The determination of acetaminophen using a carbon nanotube: graphite-based electrode [PDF]

, 2010
The oxidation of acetaminophen was studied at a glassy carbon electrode modified with multi-walled carbon nanotubes and a graphite paste. Cyclic voltammety, differential pulse voltammetry and square wave voltammetry at various pH values, scan rates, and ...
Baghi, M, Dinarvand, R, Moghaddam, A B, Mohammadi, A, Mohammadi, S, Rayeji, D, Walker, Roderick   +6 more
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Quantitative determination of glycyrrhizinic acid by square-wave [PDF]

Makedonsko Farmacevtski Bilten, 2003
Novel adsorptive stripping square-wave voltammetric method as well as a new high-pressure liquid chromatographic method for direct determination of glycyrrhizinic acid in dosage pharmaceutical preparation, used against virus infections, have been ...
Aneta Dimitrovska, Svetlana Kulevanova, Valentin Mircevski   +2 more
doaj  

Development of square-wave adsorptive stripping voltammetric method for determination of acebutolol in pharmaceutical formulations and biological fluids

Chemistry Central Journal, 2012
A validated simple, rapid, sensitive and specific square-wave voltammetric technique is described for the determination of acebutolol (AC) following its accumulation onto a hanging mercury drop electrode in a Britton-Robinson universal buffer of pH 7.5 ...
Al-Ghamdi Ali F, Hefnawy Mohamed M, Al-Majed Abdulrahman A, Belal Fatallah F   +3 more
doaj   +1 more source

J Electroanal Chem (Lausanne) [PDF]

A low-cost electrochemical sensor with Nafion/Bi modification using adsorptive stripping voltammetry for Co and Ni determination in airborne particulate matter and welding fume samples is described.

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