Synthesis of graphene oxide nanosheets and its application to construct a modified carbon paste electrode as a hydroxylamine electrochemical sensor

Recent developments in electrochemical sensors for detecting hydrazine with different modified electrodes

“…At the end, researchers utilized the modied electrode has for detecting HZ in a number of water samples. 61 Beitollahi et al modied a CPE with 2-(4-oxo-3-phenyl-3,4dihydroquinazolinyl)-N 0 -phenyl-hydrazine-carbothioamide, IL (n-hexyl-3-methylimidazolium hexauorophosphate), and magnetic core-shell Fe 3 O 4 @SiO 2 /MWCNT nanocomposite. They examined the HZ electro-oxidation at the modied electrode surface via electro-chemical procedures.…”

Electroanalytical overview: the sensing of hydroxylamine

“…41 Following the use of CNTs, a modied graphene paste electrode was created using a ferrocene derivative, 2,7-bis (ferrocenyl ethynyl) uoren-9-one (2,7-BFE). 42 A linear range from 2.0 × 10 −7 to 2.5 × 10 −4 M was reported under optimal experimental conditions with the LOD being stated as 9.0 × 10 −8 M. Ultimately, the hydroxylamine content of different (spiked) water samples was determined using this modied electrode.…”

Copper oxide, ionic liquid and Mn(III) Salen modified carbon paste electrode as selective electrochemical sensor for determination of droxidopa in the presence of carbidopa

“…Compared with other reported analytical methods, electrochemical methods possess the advantages such as, reliability, simple operation, capability of miniaturization, being portable, fast response, high sensitivity, excellent selectivity, excellent stability, and low cost. In addition, electrochemical methods provide a practical tool for online or field monitoring [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. However, a main disadvantage is that droxidopa and carbidopa are oxidized at nearly same potential with poor sensitivity at unmodified usual electrodes.…”