Simple and rapid amperometric monitoring of hydrogen peroxide in salivary samples of dentistry patients exploiting its electro-reduction on the modified/palladized aluminum electrode as an improved electrocatalyst

Voltammetric and amperometric determination of hydrogen peroxide using a carbon-ceramic electrode modified with a nanohybrid composite made from single-walled carbon nanotubes and silver nanoparticles

“…Therefore, in recent years, there has been a considerable interest in the accurate determination of H 2 O 2 . Many techniques have been employed in the determination of H 2 O 2 , including titrimetry [3], spectrophotometer [4], chemiluminescence [5,6], and electrochemistry [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. Among these methods the electrochemical techniques, based on the simplicity, high sensitivity, good stability, low-cost instrumentation and onsite monitoring, have been extensively applied for accurate determination of H 2 O 2 .…”

A nanoporous palladium-nickel alloy with high sensing performance towards hydrogen peroxide and glucose

“…As shown in Fig. 4b, Table 1 [35][36][37][38]. The remarkable performance of NP-PdNi modified electrode towards the detection of H 2 O 2 indicates that NP-PdNi holds great potential to construct H 2 O 2 sensor.…”

Amperometric Biosensors for Lactate, Alcohols, and Glycerol Assays in Clinical Diagnostics

“…Many materials, namely, platinum (Goriushkina et al, 2010), gold (Gamella et al, 2008), glassy carbon (Guo et al, 2010), different types of graphite (Haghighi et al, 2010;PournaghiAzar et al, 2010), screen-printed electrodes (Ben Rejeb et al, 2007;Radoi et al, 2007;Ricci et al, 2007;Gurban et al, 2008), rigid carbon-polymer biocomposites (Alvarez-González et.al., 2000;Liao et al, 2008), zeolites, clays, and polymeric membranes (Katrlik et al, 2006;Rozlosnik et al, 2009) were previously used for the construction of glycerol-selective electrodes. Various strategies of enzyme immobilization (Prodromidis et al, 2002), including physical or covalent binding, gel entrapment, electropolymerization, sol-gel techniques (Gurban et al, 2008;Haghighi et al, 2010;Guo et al, 2010;Pournaghi-Azar et al, 2010;Liao et al, 2008) and self-assembled architectures (Gamella et al, 2008) were employed for biosensors construction.…”

“…It was found that the calibration graph is linear with the H 2 O 2 concentration in the range from 5 × 10 −6 to 34 × 10 −6 M with a correlation coefficient of 0.999. The detection limit of the method was about 4 × 10 −6 M. The method was successfully used for the monitoring of H 2 O 2 in saliva and environmental samples (Pournaghi-Azar et al, 2010). New natural materials, such as egg shells, were proposed as enzymes carrier in bioselective membranes for triglyceride (TG)-selective amperometric biosensors.…”