Kinetic Spectrophotometric Method for 4-nitrophenol Determination in Drinking Water

Miletić, Ana; Pecev‐Marinković, Emilija; Grahovac, Zora M.; Pavlović, Aleksandra; Tošić, Snežana B.; Mišić, Ivana Rašić

doi:10.1134/s1061934819060066

Cited by 9 publications

(4 citation statements)

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“…[59] However, these alternative methods are relatively sophisticated for users, requiring sample pretreatment or extraction and expensive detectors. [60] Recently, a new and convenient technology for detection of 4-HPs and 4-NPs based on the oxidative denitration and dehalogenation of these compounds by a flavin-dependent monooxygenase (HadA) from Ralstonia pickettii to yield benzoquinone (BQ) has been developed. [12] The resulting BQ reacts with D-cysteine to form Dluciferin which can serve as a substrate for Luc to generate bioluminescence (Figure 3C).…”

Section: Nitrophenols and Halogenated Phenols As Biomarkers For Pesti...mentioning

confidence: 99%

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Detection of cellular metabolites by redox enzymatic cascades

Tinikul

Trisrivirat

Chinantuya

et al. 2022

Biotechnology Journal

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Detection of cellular metabolites that are disease biomarkers is important for human healthcare monitoring and assessing prognosis and therapeutic response. Accurate and rapid detection of microbial metabolites and pathway intermediates is also crucial for the process optimization required for development of bioconversion methods using metabolically engineered cells. Various redox enzymes can generate electrons that can be employed in enzyme‐based biosensors and in the detection of cellular metabolites. These reactions can directly transform target compounds into various readout signals. By incorporating engineered enzymes into enzymatic cascades, the readout signals can be improved in terms of accuracy and sensitivity. This review critically discusses selected redox enzymatic and chemoenzymatic cascades currently employed for detection of human‐ and microbe‐related cellular metabolites including, amino acids, d‐glucose, inorganic ions (pyrophosphate, phosphate, and sulfate), nitro‐ and halogenated phenols, NAD(P)H, fatty acids, fatty aldehyde, alkane, short chain acids, and cellular metabolites.

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Section: Nitrophenols and Halogenated Phenols As Biomarkers For Pesti...mentioning

confidence: 99%

“…[ 59 ] However, these alternative methods are relatively sophisticated for users, requiring sample pretreatment or extraction and expensive detectors. [ 60 ]…”

Section: Nitrophenols and Halogenated Phenols As Biomarkers For Pesti...mentioning

confidence: 99%

Detection of cellular metabolites by redox enzymatic cascades

Tinikul

Trisrivirat

Chinantuya

et al. 2022

Biotechnology Journal

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“…It can be seen in Figure 8(a) that all redox peak currents increase with increasing scan rate. Good linearity between peak current and scan rate suggests that surface adsorption process of 4-NP is occurring at IL-MoO3/GCE surface [57]. Furthermore, the inset of Figure 8(a) shows the linear plot of log peak current versus log scan rate, with the slope value 1, indicating adsorption-controlled process [58].…”

Section: Effect Of Varying Scan Ratementioning

confidence: 99%

Determination of 4-nitrophenol using MoO3 loaded glassy carbon electrode via electrochemical sensing approach

Kamble

Garadkar

Sharma

et al. 2021

J. Electrochem. Sci. Eng.

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In order to raise possible ways of MoO3 synthesis and improve its existing applications, MoO3 nanomaterial was successfully synthesized through the solvo-hydrothermal route by utilizing a mixture of ionic liquid (1-butyl-3-methylimidazolium bromide) as a solvent, and water as co-solvent in 1:1 ratio. The morphology and structural parameters of IL-assisted MoO3 product were examined by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). Additionally, the surface wettability and particle size distribution were inspected using the contact angle and dynamic light scattering (DLS) analysis. Glassy carbon electrode (GCE) surface was then modified by IL-assisted MoO3. The formed IL-MoO3/GCE was employed as an electrochemical sensor for determination of 4-nitrophenol (4-NP), which is very toxic and important pollutant. The redox behavior of 4-NP at the surface of IL-MoO3/GCE was investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques. Limits of detection (LOD) and limits of quantification (LOQ) determined from CV were found to be 6.76 and 22.5 mM, while from DPV recordings, 5.41 and 18.0 mM are found. The obtained results clearly reveal possible application of MoO3 for selective and sensitive sensing of 4-NP. The decorated electrode was successfully employed for determination of 4-NP in the river water real samples.

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“…10 However, these methods have many problems in terms of sensitivity, simplicity, and economy. 11–13 Compared with these traditional methods, the use of electrochemiluminescence (ECL) for the detection of PNP has rarely been reported. ECL is a detection method that combines the advantages of electrochemistry and chemiluminescence.…”

Section: Introductionmentioning

confidence: 99%