Detailed Information on Publication Record
2006
Electrochemical sensors for detection of acetylsalicylic acid
ŠUPALKOVÁ, V., J. PETŘEK, L. HAVEL, Soňa KŘÍŽKOVÁ, J. PETROLVÁ et. al.Basic information
Original name
Electrochemical sensors for detection of acetylsalicylic acid
Name in Czech
Elektrochemický senzor pro detekci acetylsalicylové kyseliny
Authors
ŠUPALKOVÁ, V. (203 Czech Republic), J. PETŘEK (203 Czech Republic), L. HAVEL (203 Czech Republic), Soňa KŘÍŽKOVÁ (203 Czech Republic), J. PETROLVÁ (203 Czech Republic), Vojtěch ADAM (203 Czech Republic), David POTĚŠIL (203 Czech Republic), P. BABULA (203 Czech Republic), Miroslava BEKLOVÁ (203 Czech Republic), Aleš HORNA (203 Czech Republic) and René KIZEK (203 Czech Republic, guarantor)
Edition
SENSORS, 2006, 1424-8220
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10405 Electrochemistry
Country of publisher
Czech Republic
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 1.373
RIV identification code
RIV/00216224:14310/06:00016396
Organization unit
Faculty of Science
UT WoS
000244633800004
Keywords in English
Electrochemistry; sensors; acetylsalicylic acid
Změněno: 14/2/2007 17:21, Ing. Radka Mikelová, Ph.D.
V originále
Acetylsalicylic acid (AcSA), or aspirin, was introduced in the late 1890s and has been used to treat a variety of inflammatory conditions. The aim of this work was to suggest electrochemical sensor for acetylsalicylic detection. Primarily, we utilized square wave voltammetry (SWV) using both carbon paste electrode (CPE) and of graphite pencil electrode (GPE) as working ones to indirect determination of AcSA. The principle of indirect determination of AcSA bases in its hydrolysis on salicylic acid (SA), which is consequently detected. Thus, we optimized both determination of SA and conditions for AcSA hydrolysis and found out that the most suitable frequency, amplitude, step potential and the composition and pH of the supporting electrolyte for the determination of SA was 260 Hz, 50 mV, 10 mV and Britton-Robinson buffer (pH 1.81), respectively. The detection limit (S/N = 3) of the SA was 1.3 ng/ml. After that, we aimed on indirect determination of AcSA by SWV CPE. We tested the influence of pH of Britton-Robinson buffer and temperature on yield of hydrolysis, and found out that 100% hydrolysis of AcSA was reached after 80 minutes at pH 1.81 and 90C. The method for indirect determination of AcSA has been utilized to analyse pharmaceutical drug. The determined amount of AcSA in the pharmaceutical drug was in good agreement with the declared amounts. Moreover, we used GPE for determination of AcSA in a pharmaceutical drug. Base of the results obtained from stationary electrochemical instrument we used flow injection analysis with electrochemical detection to determine of salicylates (SA, AcSA, thiosalicylic acid, 3,5-dinitrosalicylic acid and 5-sulfosalicylic acid – SuSA). We found out that we are able to determine all of detected salicylates directly without any pre-treatment, hydrolysis and so on at units of femtomoles per injection (5 ul).
In Czech
Elektrochemický senzor pro detekci acetylsalicylové kyseliny
Links
GP525/04/P132, research and development project |
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