Simultaneous chemiluminescence determination of citric acid and oxalic acid using multi-way partial least squares regression

Mokhtari, Ali; Keyvanfard, Mohsen; Emami, Iraj

doi:10.1039/c5ra03034j

Cited by 15 publications

(10 citation statements)

References 64 publications

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“…[28][29][30][31][32] The CL kinetic profiles of some of investigated compounds presented in Table 1 are very or relatively sharp so that their CL intensity is little or approximately equal to zero at 10 s after starting CL reaction. Therefore, they have little or zero blank interferences for the determination of mepivacaine which have a broad CL time profile with a detectable response at 10 s after injection of Ce(IV) solution.…”

Section: Interference Studymentioning

confidence: 99%

Chemiluminescence Determination of Local Anaesthetic Mepivacaine in Human Plasma and Pharmaceuticals

Mokhtari¹

2016

ACSi

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In this study, a new method has been developed for the simple determination of mepivacaine (carbocaine). The method is based on the enhancement effect of mepivacaine in the chemiluminescence (CL) reaction of tris(1,10 phenanthroline)ruthenium(II) with cerium(IV). A mechanism for the CL reaction has been proposed on the basis of UV-Vis, fluorescent and CL spectra. Under optimum conditions, the CL intensity was proportional to the concentration of the drug in solution over the range 0.45-226.25 μg mL -1 (R 2 = 0.9996). The LOD was 0.34 μg mL -1 (S/N = 3). LOD was about 10 times lower than the therapeutic concentration of mepivacaine. The percent of relative standard deviation for determination of 11 replicates at level of 9.05 μg mL -1 and 90.50 μg mL -1 of mepivacaine were 1.8 and 3.7%, respectively. The proposed method was applied successfully for the determination of mepivacaine in human plasma and injectable solutions.

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Section: Interference Studymentioning

confidence: 99%

Chemiluminescence Determination of Local Anaesthetic Mepivacaine in Human Plasma and Pharmaceuticals

Mokhtari¹

2016

ACSi

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“…Notably, the U.S. department of agriculture has set up a limit on OA content in spinach at 9.70 mg per 1 g. 9 Besides food and dietary management, OA monitoring is also necessary for organic fuels, for example, ethylene glycol-based fuels. 10 Many techniques are available for the detection of OA, such as highperformance liquid chromatography, 11 coelectro-osmotic capillary electrophoreses, 12 flow injection spectrophotometry, 13 ion chromatography, 14 chemiluminescence, 15 electrochemical method, 16 and enzyme-based biosensing. 17 The electrochemical platform with and without the enzyme is prevalent for OA sensors.…”

Section: ■ Introductionmentioning

confidence: 99%

Surfactant-Free Green Synthesis of ZnS QDs with Active Surface Defects for Selective Nanomolar Oxalic Acid Colorimetric Sensors at Room Temperature

Juine

Das

2020

ACS Sustainable Chem. Eng.

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Quantum dots (QDs) are synthesized using surfactants to enable their viable applications with minimum surface defects. The environmentally benign method without a surfactant is a way forward for sustainable applications. Sunlightmediated synthesis of uniform ZnS QDs without a surfactant is achieved with pristine surface defects that facilitate visible light absorption. The cubic phase of QDs and their size are revealed using transmission electron microscopy and X-ray diffraction. The unique absorption property is utilized to demonstrate a costeffective colorimetric sensor for biological toxic substances such as oxalic acid using absorption spectroscopy. The unparalleled performance among the enzymatic or nonenzymatic processes for oxalic acid detection is realized, however, without any noble metal, for a wide range of 1 nM to 0.5 mM concentrations with a limit of detection of 0.2 nM. Typical inferences from organic acids, water-soluble salts, and metal ions are also investigated. Further, the role of surface defects in QDs is unfurled with photoluminescence, infrared, and Raman spectroscopic measurements, and the underlying mechanism of OA detection is elaborated. Thus, green synthesis and unmasking the influence of surface defects in ZnS QDs as demonstrated for selective detection open up for various other applications such as solar cells and catalysts.

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“…Consequently, a more efficient and simple method for measuring urinary oxalic acid is desired. Several methods exist for oxalate determination such as co-electroosmotic capillary electrophoresis [6], high-performance liquid chromatography [7], flow injection spectrophotometry [8], chemiluminescence [9], ion chromatography [10] and enzyme-based biosensors [11]. These methods provide high sensitivity and selectivity.…”

Section: Introductionmentioning

confidence: 99%

An Oxalic Acid Sensor Based on Platinum/Carbon Black-Nickel-Reduced Graphene Oxide Nanocomposites Modified Screen-Printed Carbon Electrode

Income

Ratnarathorn

Themsirimongkon

et al. 2019

J. Electrochem. Sci. Technol

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A novel non-enzymatic oxalic acid (OA) sensor based on the platinum/carbon black-nickel-reduced graphene oxide (Pt/CB-Ni-rGO) nanocomposite is reported. The nanocomposites were prepared by the ethylene glycol reduction method. Their morphology and chemical composition were characterized by scanning electron microscopy (SEM), energy dispersive Xray spectroscopy (EDX) and transmission electron microscopy (TEM). The results clearly demonstrated the formation of the Pt/CB-Ni-rGO nanocomposite. The electrocatalytic activity of the Pt/CB-Ni-rGO electrode was investigated by cyclic voltammetry. It was determined that the appropriate amount of Pt enhanced the catalytic activity of Pt for oxalic acid electro-oxidation. Moreover, the modified electrode was determined to be highly selective for oxalic acid without interference from compounds commonly found in urine including uric acid and ascorbic acid. The chronoamperometric signal gave a wide linearity range of 20 μM-60 mM and the detection limit (3σ) was found to be 2.35 μM. The proposed method showed high selectivity, stability, and good reproducibility and could be used with micro-volumes of sample for the detection of oxalic acid. Finally, the oxalic acid content in artificial and control urine samples were successfully determined by our proposed electrode.

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Simultaneous chemiluminescence determination of citric acid and oxalic acid using multi-way partial least squares regression

Abstract: A novel kinetic chemiluminescent method proposed for the simultaneous determination of oxalic acid and citric acid in their mixtures.

Cited by 15 publications

References 64 publications

Chemiluminescence Determination of Local Anaesthetic Mepivacaine in Human Plasma and Pharmaceuticals

Chemiluminescence Determination of Local Anaesthetic Mepivacaine in Human Plasma and Pharmaceuticals

Surfactant-Free Green Synthesis of ZnS QDs with Active Surface Defects for Selective Nanomolar Oxalic Acid Colorimetric Sensors at Room Temperature

An Oxalic Acid Sensor Based on Platinum/Carbon Black-Nickel-Reduced Graphene Oxide Nanocomposites Modified Screen-Printed Carbon Electrode

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