Sorption-photometric method for determination of sodium dodecyl sulfate with methylene blue in the presence of non-ionic surfactant

Micellar liquid chromatography (MLC) with the use of high performance liquid chromatography (HPLC) was used to determine some physicochemical parameters of six biogenic amines: adrenaline, dopamine, octopamine, histamine, 2-phenylethylamine, and tyramine. In this paper, an influence of surfactant’s concentration and pH of the micellar mobile phase on the retention of the tested substances was examined. To determine the influence of surfactant’s concentration on the retention of the tested amines, buffered solutions (at pH 7.4) of ionic surfactant—sodium dodecyl sulfate SDS (at different concentrations) with acetonitrile as an organic modifier (0.8/0.2 v/v) were used as the micellar mobile phases. To determine the influence of pH of the micellar mobile phase on the retention, mobile phases contained buffered solutions (at different pH values) of sodium dodecyl sulfate SDS (at 0.1 M) with acetonitrile (0.8/0.2 v/v). The inverse of value of retention factor () versus concentration of micelles () relationships were examined. Other physicochemical parameters of solutes such as an association constant analyte—micelle ()—and partition coefficient of analyte between stationary phase and water (hydrophobicity descriptor) () were determined by the use of Foley’s equation.

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Spectrophotometric study of the Sodium dodecyl sulfate in the presence of Methylene blue in the methanol-water mixed solvent system

Journal of Molecular Liquids ◽

10.1016/j.molliq.2021.117200 ◽

2021 ◽

pp. 117200

Author(s):

Pawan Shah ◽

Shikha Kumari Jha ◽

Ajaya Bhattarai

Keyword(s):

Methylene Blue ◽

Sodium Dodecyl Sulfate ◽

Mixed Solvent ◽

Sodium Dodecyl ◽

Spectrophotometric Study ◽

Solvent System ◽

Mixed Solvent System ◽

Dodecyl Sulfate

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Determination of Simvastatin by Voltammetry Method at Screen-Printed Electrode Modified by Graphene Oxide Nanosheets and Sodium Dodecyl Sulfate

Journal of The Electrochemical Society ◽

10.1149/1945-7111/ac4b1d ◽

2022 ◽

Author(s):

Abolfazl Darroudi ◽

Saeid Nazari ◽

Seyed Ali Marashi ◽

Mahdi Karimi-Nazarabad

Keyword(s):

Graphene Oxide ◽

Sodium Dodecyl Sulfate ◽

Limit Of Detection ◽

Sodium Dodecyl ◽

Screen Printed Electrode ◽

Support Electrolyte ◽

Limit Of Quantitation ◽

Dodecyl Sulfate ◽

Screen Printed

Abstract An accurate, rapid, simple, and novel technique was developed to determine simvastatin (SMV). In this research, a screen-printed electrode (SPE) was deposited with graphene oxide (GO) and sodium dodecyl sulfate (SDS), respectively. For the first time, the handmade modified SPE measured the SMV by differential pulse voltammetry (DPV) with high sensitivity and selectivity. The results of cyclic voltammetry indicated the oxidation irreversible process of SMV. Various parameters (pH, concentration, scan rate, support electrolyte) were performed to optimize the conditions for the determination of SMV. Under the optimum experiment condition of 0.1 M KNO3 as support electrolyte and pH 7.0, the linear range was achieved for SMV concentration from 1.8 to 36.6 µM with a limit of detection (LOD), and a limit of quantitation (LOQ) of 0.06 and 1.8 µM, respectively. The proposed method was successfully utilized to determine SMV in tablets and urine samples with a satisfactory recovery in the range of 96.2 to 103.3%.

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