Electrochemical sensors using modified electrodes based on copper complexes formed with Algerian humic acid modified with ethylenediamine or triethylenetetramine for determination of nitrite in water

A new ternary ruthenium(III) complex with 1,3-bis(salicylideneamino) propan-2-ol and 3-picolylamine: Synthesis, characterization, density functional theory and preparation of electrochemical sensor for nitrite analysis

“…The results show an oxidation peak current around 0.67 V ) 022 . 0 ( µA i = and 0.84 V ) 14 . 0 ( µA i = with CME/Graphite and CME/G/Ru(III)-BSAP-PLA, respectively, assigning to the oxidation of NO 2 to NO 3 -.…”

“…Rrecently, numerous studies have been conducted on the impact of inorganic pollutants such as heavy metals and nitrite ions on water quality [14][15][16][17][18][19][20]. Indeed, to detect these ions, different electrochemical sensors based on modified electrodes were developed [21][22][23][24][25][26][27][28][29][30].…”

High quality Pt–graphene nanocomposites for efficient electrocatalytic nitrite sensing

“…It must be pointed out that most of above methods are reliable but time-consuming, complicated, and expensive [12,13]. Owing to the rapid response, cheap, safe, simple instrumentation and easy operation, electrochemical techniques have been currently employed for the detection of nitrite [14][15][16]. However, it has long been known that the use of bare electrodes such as carbon electrodes, gold and platinum tend to be poisoned by the species formed during the electrochemical process [17].…”

An electrochemical sensor for hydrazine and nitrite based on graphene–cobalt hexacyanoferrate nanocomposite: Toward environment and food detection

“…However, electrooxidation of hydrazine on conventional electrodes commonly faces substantial limit because of sluggish electrode kinetics and high overpotential [17]. Likewise, electroanalytical determination of nitrite generally suffers from poor sensitivity and accuracy as a result of electrode contamination by electrochemical intermediates [18]. Chemically modified electrodes bring about much flexibility and create many opportunities to address these http://dx.doi.org/10.1016/j.jelechem.2015.03.017 1572-6657/Ó 2015 Elsevier B.V. All rights reserved.…”