Kobra Moteabbed; Jafar Burromandpiroze; Vahid Zare-Shahabadi; Soheil Sayyahi
Abstract
In this study, we used a prepared from chitosan-capped AuNPs for the determination of trace amount acetaminophen drug in various matrices such human fluids by kinetic spectrophotometric method. The calibration curve was linear in the range of (0.05 to 10.0 µg L−1). The standard deviation ...
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In this study, we used a prepared from chitosan-capped AuNPs for the determination of trace amount acetaminophen drug in various matrices such human fluids by kinetic spectrophotometric method. The calibration curve was linear in the range of (0.05 to 10.0 µg L−1). The standard deviation of (1.9%), and detection limit of the method (0.05 µg L−1 in time 6 min, 325 nm) were obtained for Sensor level response chitosan-capped AuNPs with (95%) confidence evaluated. Observed outcomes confirmed the suitability recovery, and a very low detection limit for measuring the acetaminophen drug. The method introduced to measure acetaminophen drug in real samples such as urine, and blood can be used for other drugs, and hospital samples.
Arezoo Zohourtalab; Habib Razmi
Volume 5, Issue 1 , March 2018, , Pages 9-16
Abstract
A kind of ferrocene mediated enzymatic biosensor was fabricated in order to the measurement of glucose as an important biological analyte. A homogenous mixture of ferrocene including Chitosan(CS), Nafion(Nf) and an imidazolium based ionic liquid, 1-butyl-3-methyl imidazoliumhexafluorophosphate, ...
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A kind of ferrocene mediated enzymatic biosensor was fabricated in order to the measurement of glucose as an important biological analyte. A homogenous mixture of ferrocene including Chitosan(CS), Nafion(Nf) and an imidazolium based ionic liquid, 1-butyl-3-methyl imidazoliumhexafluorophosphate, [BMIM]HF6PO4, was prepared. The mentioned mixture was cast on the surface of carbon ceramic electrode and an enzymatic layer was entrapped between two layers of this mixture in order to improving the mechanical stability of the biosensor. Cyclic voltammetry and chronoamperometry were used to investigate the analytical performance of the biosensor. Remarkable deduction of interfering signals produced by AA and UA was obtained by applying a constant potential (180mV) on the human plasma for a short period of time (100min). Values of practical parameters such as sensitivity (2.73 µA mM-1cm-2), linear range (95.23–1367.5 µM) and detection limit (48 µM) were obtained by the chronoamperometric studies. The apparent Michaels-Menten constant, Km (3.52 mM) was also calculated. In order to estimate the practical accuracy and precision of the enzymatic biosensor, a test of spiked glucose solution recovery in natural plasma was done.
