Determination of Cationic Surfactants in Environmental Samples by Flow Injection Analysis

Agrawal, Kavita; Agnihotri, Gaurav; Shrivas, Kamlesh; Mundhara, G. L.; Patel, Khageshwar Singh; Hoffmann, P.

doi:10.1007/s00604-004-0228-0

Cited by 36 publications

(19 citation statements)

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“…The Fe (III)-SCN -method was used for CSs determination, but interference of the reducing and oxidizing agents was observed 19 . The bismuth (III) iodide method 20 was also used for CS determination.…”

Section: Introductionmentioning

confidence: 99%

Silver Nanoparticles-Based Nano-drop Spectrophotometric Determination of Cationic Surfactants Coupled with Hydrophobic Interaction; An Application to Pharmaceuticals and Environmental

Sharma¹,

Tapadia²

2016

Orient. J. Chem

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The proposed work describes the nanodrop spectrophotometric determination of cationic surfactants using citrate-modified silver nanoparticles based on the aggregation of silver nanoparticles induced by cationic surfactants due to the hydrophobic effect. The visible color change in the solution of silver nanoparticle includes a red shift with the quenching of the absorption spectra. The maximum absorbance was measured at wavelength, λ max 400 nm. The concentrations of cationic surfactants were determined using a nanodrop spectrophotometer with limits of detection of 15.0, 8.0, 6.0, 5.8, and 13.0 µM for dodecyl trimethyl ammonium bromide, myristil trimethyl ammonium bromide, cetrimonium trimethyl ammonium bromide, cetyl pyridinium chloride and benzalkonium chloride, respectively. The proposed method was successfully applied for the determination of cetyl pyridinium chloride in commercial mouthwasher, gum astringent and nasal spray pharmaceuticals and environmental samples.

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Section: Introductionmentioning

confidence: 99%

Silver Nanoparticles-Based Nano-drop Spectrophotometric Determination of Cationic Surfactants Coupled with Hydrophobic Interaction; An Application to Pharmaceuticals and Environmental

Sharma¹,

Tapadia²

2016

Orient. J. Chem

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“…In the case of working with large sample volume solutions of about 100 mL and also small extracting solvent volume (methanol) of 2.5 mL; a forty fold enrichment (preconcentration) factor is achieved. The limit of detection of the proposed method is better or comparable with most of the published methods 2,[5][6][7][8]17 for the determination of CPC and it can certainly be placed among the most sensitive ones. …”

Section: Resultsmentioning

confidence: 75%

“…8 Using anionic dyes as counter ions are also examined. [9][10][11][12][13][14][15][16][17] The accuracy of these analytical methods is determined by the distribution constant of ion-pair between the organic and aqueous phases.…”

Section: Introductionmentioning

confidence: 99%

Development of a flotation-spectrophotometric method for determination of cetylpyridinium chloride in pharmaceutical products

Parham¹,

Moradi²

2011

Quím. Nova

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Recebido em 17/8/10; aceito em 16/11/10; publicado na web em 18/2/11A new simple and sensitive flotation-spectrophotometric method for the determination of cetylpyridinium chloride (CPC) is reported. The method is based on the formation of an ion-associate between CPC and Orange II (OR) which is floated in the interface of aqueous phase and n-hexane by vigorous shaking. The aqueous solution was discarded and the adsorbed ion associate on to the wall of a separating funnel was dissolved in a small volume of methanol solvent and its absorbance was measured at 480 nm. The apparent molar absorptivity (ε) of the ion associate was determined to be 4.12 x 10 5 L mol -1 cm -1 . The calibration graph was linear in the concentration range of 15-800 ng mL -1 of CPC with a correlation coefficient of 0.9988. The limit of detection (LOD) was 10.8 ng mL -1 . The relative standard deviation (RSD) for determination of 100 and 800 ng mL -1 of CPC was 3.47 and 2.04% (n=7), respectively. The method was successfully applied to the determination of CPC in a commercial mouth washer product.

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“…Despite being biodegradable in aerobic conditions, they remain toxic even at low concentrations 2 to the aquatic ecosystem, 3 affecting organisms such as algae and invertebrate. 4 Regarding human toxicity, they can affect the central nervous system, causing agitation, debility, ataxia and reduced consciousness when ingested in large quantities. They also promote the development of lesions in the mouth and the digestive tract and, when in contact with the eyes, they can cause serious damage to the cornea.…”

Section: Introductionmentioning

confidence: 99%

“…14 The enhancement of colour intensity of binary metal complexes by surfactants has also been reported as an alternative method that avoids liquid-liquid extraction and the use of toxic solvents. 4,15,16 Flow injection titration manifolds using ion selective electrodes 17 or micellarenhanced fluorescence 18 have also been developed.…”

Section: Introductionmentioning

confidence: 99%

Application of Sequential Injection Analysis to the Determination of Cationic Surfactants Based on the Sensitized Molybdenum-Bromopyrogallol Red Reaction

2005

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The aim of this work was to develop a simple, automatic system for the evaluation of cationic surfactants by combining sequential injection analysis and the sensitized effect of cationic surfactants on the reaction between metal ions and chelating dyes. This reaction is based on the increase in absorbance of the complex formed among molybdenum, bromopyrogallol red and increasing concentrations of cationic surfactants. Under optimum conditions, two calibration plots were obtained for a concentration range between 2.50 × 10 -7 mol dm -3 (detection limit) and 5.00 × 10 -4 mol dm -3 of cetylpyridinium chloride, used as standard. Solubilization of water insoluble complexes formed for concentrations of cationic surfactants greater than 1.00 × 10 -4 mol dm -3 were successfully achieved with Triton X-405. RSD values lower than 5.0% were obtained in all cases. The quality of the results obtained for 18 water samples were evaluated by comparison with conventional methods, with no statistically significant differences for a 95% confidence level.

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Determination of Cationic Surfactants in Environmental Samples by Flow Injection Analysis

Cited by 36 publications

References 0 publications

Silver Nanoparticles-Based Nano-drop Spectrophotometric Determination of Cationic Surfactants Coupled with Hydrophobic Interaction; An Application to Pharmaceuticals and Environmental

Silver Nanoparticles-Based Nano-drop Spectrophotometric Determination of Cationic Surfactants Coupled with Hydrophobic Interaction; An Application to Pharmaceuticals and Environmental

Development of a flotation-spectrophotometric method for determination of cetylpyridinium chloride in pharmaceutical products

Application of Sequential Injection Analysis to the Determination of Cationic Surfactants Based on the Sensitized Molybdenum-Bromopyrogallol Red Reaction

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