Hydrazine has been identified as a carcinogenic mutagenic, hepatotoxic, and neurotoxin material. A metal-organic framework with tetragonal symmetry, DMOF-1 (Zn2(bdc)2dabco) was synthesized by a versatile and facile technique, followed by its efficient development and validation as hydrazine electrochemical sensor. Differential pulse voltammetry (DPV), linear sweep voltammetry (LSV), and c...

0308-8146/$ see front matter 2010 Published by doi:10.1016/j.foodchem.2010.07.047 * Corresponding author. Tel.: +385 31 224 325; fax E-mail address: [email protected] (M. Šeruga). Red wines produced in three different wine growing regions of Croatia were analysed for total polyphenols (TP) content, concentration of individual polyphenols and antioxidant activity (AA). TP content was measured by ...

In this study, an electrochemical sensor for the quantification of folic acid with voltam­metric detection in physiological conditions was constructed. For purpose, nickel ferrite (NiFe2O4) nanoparticles were used to modify surface a screen-printed graphite electrode (NiFe2O4/SPGE) and applied determination acid. The modified displays strong response Folic determined electrochemically using dif...

In the present work, we describe electrochemical behaviour of two opioids structurally related to aroyl amides forensic interest, namely U-47700 and AH-7921. The data obtained allowed for mise-au-point a voltammetric determination protocol, that relies on differential pulse voltammetry (DPV) at glassy carbon electrode in ethanol/0.1 M lithium perchlorate/0.10 2,6-lutidine. To apply method analy...

The present study developed a facile and fast electrochemical approach to sensitively analyze Sudan I using Fe3O4-ZIF-67 nanocomposite plus ionic liquid (IL). carbon paste electrode (CPE) modified with Fe3O4-ZIF-67/IL exhibited an excellent sensing performance I. Compared the unmodified CPE, Fe3O4-ZIF-67/ILCPE could significantly increase peak current of oxidation decrease overpotentials. Under...

Herein, gold nanoparticle had been successfully synthesized through a simple, inexpensive and clean electrochemical technique. Gold nanoparticles were directly deposited on the electrode surface using an electrochemical strategy. Then, the electrochemical deposition parameters (such as applied potential and deposition time) were optimized. 1.1 V and 250 s were applied as the optimal electrodepo...

A new voltammetric sensor is proposed for the determination of bisphenol A, using a glassy carbon electrode (GCE) modified with Fe3O4/graphene oxide (GO) nanocomposite. The modification surface was performed by dispersion drop-casting. electro­chemical behavior evaluated cyclic voltammetry (CV). oxidation peak observed during anodic potential scan at potentials 0.45 V. Higher currents (Ipa) wer...

Nitrogen (N) doping is a well-known approach that can be effectively used to tune the properties of graphene-supported materials. The current attempt followed simple hydrothermal protocol for fabrication N-doped graphene sheets (N-GSs). N-GSs were subsequently applied modify surface glassy carbon electrode (GCE) dopamine (DA) electrochemical sensor (N-GSs/GCE), tested on basis differential puls...

Labelling and detection of a synthetic peptide (PN) mimicking a tryptic fragment of interest for the diagnosis of familial amyloidal polyneuropathy have been investigated optically and electrochemically. We decided to covalently label naphtalene-2,3-dicarboxyaldehyde (NDA), a fluorogenic and electroactive molecule on PN. First, the optimization of the labelling chemical reaction was performed b...

There are various ways to impose a potential variation in time, and subsequently a series of voltammetric methods. Cyclic voltammetry relies on linearly scanning the potential in time, observing a triangular waveform variation [1-3]. Differential pulse voltammetry is based on two samplings of the current intensity for each potential pulse: one measurement before applying the pulse, and the seco...