Voltammetric Determination of Carcinogenic Nitrobiphenyls at a Hanging Mercury Drop Electrode
نویسندگان
چکیده
Differential pulse voltammetry (DPV) and adsorptive stripping voltammetry (AdSV) at a hanging mercury drop electrode (HMDE) was used for the determination of trace amounts of carcinogenic nitrobiphenyls, namely 2-nitrobiphenyl (2-NBP), 3nitrobiphenyl (3-NBP) and 4-nitrobiphenyl (4-NBP) within the concentration range from 2.10 to 1.10 mol⋅L for DPV and from 2.10 to 1.10 mol⋅L for AdSV using a BrittonRobinson buffer – methanol (1:1) mixture with resulting pH 12 as a base electrolyte. The practical applicability of newly developed methods was verified using model samples of drinking and river water and liquid-liquid extraction for a preliminary separation and preconcentration.
منابع مشابه
Electrochemical Determination of Ebastine in Tablet Dosage Forms at Hanging Mercury Drop Electrode
The electrochemical behaviour of ebastine was studied at hanging mercury drop electrode using cyclic voltammetry and differential pulse voltammetry. The molecule shows a single, well defined reduction peak due to the reduction of carbonyl group. The voltammetric conditions were optimized with respect to maximum peak signals. The linearity between the peak signal and the concentration of ebastin...
متن کاملApplication of Electrochemical Methods for Analysis of Fluoroquinolones Antibacterial Agents and Fluoroquinolones-DNA Interactions
This mini review describes the results regarding the voltammetric determination of micromolar, submicromolar and nanomolar concentrations of various fluoroquinolones antibacterial agents using both traditional hanging mercury drop electrode, carbon paste electrode, glassy carbon paste electrode and chemically modified electrodes. We concentrate on the interaction of quinolones with DNA in solut...
متن کاملDifferential pulse cathodic voltammetric determination of floctafenine and metopimazine.
A simple, rapid and sensitive voltammetric method for the determination of floctafenine (FFN) and metopimazine (MPZ) was developed. Well-defined cathodic waves were obtained for both drugs in Britton-Robinson buffer pH 9.0 using the differential-pulse mode at the hanging mercury drop electrode (HMDE). The current-concentration relationship was found to be linear over the ranges 0.4-3.6 and 0.4-...
متن کاملMathematical Modelling of the Electrode Process of Azithromycin Using Cyclic Voltammetry at Hanging Mercury Drop Electrode
A theoretical treatment is presented to predict the kinetic behaviour of azithromycin at the surface of hanging mercury drop electrode using cyclic voltammetry. A model is developed to incorporate the occurrence of adsorption of the oxidized and reduced species of azithromycin at the surface of mercury drop electrode. An analytical solution was obtained using MATHEMATICA (V-3, Wolfram Research,...
متن کاملCathodic adsorptive stripping voltammetric determination of prednisolone in pharmaceutical preparation and human urine.
Differential pulse cathodic adsorptive stripping voltammetric method was developed for the determination of prednisolone based on electrochemical reduction of the drug at a hanging mercury drop electrode (HMDE) in 0.04 M Britton-Robinson buffer pH 3.5. The peak current varied linearly over the concentration range 7.21-144.2 ng/ml prednisolone with limit of detection and limit of quantification ...
متن کامل