Microwave-assisted synthesis graphite-supported Pd nanoparticles for detection of nitrite

Construction of an Ultrasensitive and Highly Selective Nitrite Sensor Using Piroxicam-Derived Copper Oxide Nanostructures

“…To investigate the selectivity of the developed Px-CuO based nitrite sensor, its response in a 1 µM solution of nitrite ions was investigated at an applied potential value of 1.0 V in the presence of 10-fold higher concentrations (10 µM each) of possibly interfering anions present in water [3,18] such as nitrate, sulfate, carbonate, bicarbonate, chloride, ammonia (as NH 4 OH), and acetate as shown in Figure 9. On the basis of the obtained results, it is clearly established that the performance of the nitrite sensor developed in this work has better sensitivity than that reported earlier [22] where the LOD value of 360 nM has been described for nitrite.…”

“…To investigate the selectivity of the developed Px-CuO based nitrite sensor, its response in a 1 µM solution of nitrite ions was investigated at an applied potential value of 1.0 V in the presence of 10-fold higher concentrations (10 µM each) of possibly interfering anions present in water [3,18] such as nitrate, sulfate, carbonate, bicarbonate, chloride, ammonia (as NH4OH), and acetate as shown in Figure 9. The interference from all anions was non-significant, which indicates that the developed Px-CuO NSs based sensor is highly selective for nitrite ions and thus can efficiently work in various matrices.…”

“…Nitrite ions have great ecological importance because they are involved as intermediates in the nitrogen cycle [1,2] and are widely utilized as preservatives in foods and soils, for lowering hypertension, and as vasodilators [3]. Despite these useful applications, nitrites form carcinogenic nitrosamines when combined with secondary amines in the body [3].…”

“…Despite these useful applications, nitrites form carcinogenic nitrosamines when combined with secondary amines in the body [3]. Due to this toxic aspect, it is essential to monitor the level of nitrites, especially in samples that cause environmental and health concerns [1,4].…”

Sensitive Electrochemical Capsaicin Sensor Based on a Screen Printed Electrode Modified with Poly(sodium 4-styrenesulfonate) Functionalized Graphite

“…Grp is one of the most abundant carbon allotropes that is composed of sp2 hybridized carbon atoms with a π-electronical system. 27 It exhibits high conductivity, a huge specific area and loosely held electrons in graphitic layers, benefit from its unique structure and low cost, Grp has been widely used as a substrate to construct electrochemical sensors and biosensors. [28][29][30] To prevent the Grp layers from aggregation and of improve the specific properties, a surfactant is always needed.…”