Masking agents in the spectrophotometric determination of metal ions with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol and non-ionic surfactant

Miura, Jun′ichiro

doi:10.1039/an9891401323

Cited by 42 publications

(16 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Due to strict regulations, nonionic surfactants have only limited application in the food industry, where they are employed to change the stability of various emulsions (18) and to decrease the retrogradation of amylopectin (19). Nonionic surfactants also have been used in analytical chemistry to increase the fluorescence of dansylated amino acids (20), improve protein separation in capillary zone electrophoresis (21), and mask side effects in spectrophotometry (22).…”

mentioning

confidence: 99%

Alkyl Ethoxylated and Alkylphenol Ethoxylated Nonionic Surfactants: Interaction with Bioactive Compounds and Biological Effects

Cserháti¹

1995

Environ Health Perspect

View full text Add to dashboard Cite

mentioning

confidence: 99%

Alkyl Ethoxylated and Alkylphenol Ethoxylated Nonionic Surfactants: Interaction with Bioactive Compounds and Biological Effects

Cserháti¹

1995

Environ Health Perspect

View full text Add to dashboard Cite

“…2-(5-Bromo-2-pyridylazo)-5-diethylaminophenol, 5-Br-PADAP or HL, has been used to detect trace amounts of various metal elements [15,16]. Its metal complexes have relatively high molar absorptivity in visible region.…”

Section: Watarai Et Al Clarified the Contribution Of Interfacial Commentioning

confidence: 99%

Catalytic Effect of Ionic Surfactants on the Extraction Rate of Nickel(II) and Palladium(II) with 2-(5-Bromo-2-pyridylazo)-5-diethylaminophenol in the Toluene/Water System

Ohashi

Tanaka

Oda

et al. 2013

SERDJ

View full text Add to dashboard Cite

The effects of the surfactants on the extraction rate of nickel(II) and palladium(II) with 2-(5-bromo-2-pyridylazo)-5-diethyaminophenol (5-Br-PADAP) in the toluene/water system were investigated by the centrifugal liquid membrane (CLM) method. The extraction rates of the metal(II) ions were increased by the addition of the ionic surfactants having a charge opposite to the metal(II) species in the aqueous solution. The stronger the interfacial activity of the surfactant, the larger the acceleration effect became. The acceleration was explained by the increase in the interfacial concentration of metal ions by an electrostatic attraction between the metal species and the ionic surfactant adsorbed at the interface. On the other hand, the extraction rates of metal(II) ions were reduced by the addition of an ionic surfactant having the same charge as the metal(II) species and the nonionic surfactant.

show abstract

“…8,21 A complemental study revealed that cobalt(II) ions are not retained in a column loaded with TAC in the presence of reducing agents, such as ascorbic acid and hydroxylammonium chloride. In aqueous solution the cobalt(III) complex has green coloration and an absorption maximum at 576 nm.…”

Section: Complex Formation Studiesmentioning

confidence: 99%

Separation and Preconcentration of Cobalt after Sorption onto Amberlite XAD-2 Loaded with 2-(2-Thiazolylazo)-p-cresol

Ferreira

Brito

1999

ANAL. SCI.

View full text Add to dashboard Cite

Analytical chemists frequently receive samples that cannot be analyzed in the natural state, due to the presence of interferences and/or inadequate sensibility of the available analytical methodology. Previous steps for separation and enrichment are almost always necessary, and many procedures have been proposed. The process, involving extraction in solid phase, has received more acceptance due to a number of possible advantages, including the availability and easy recovery of the solid phase, attainability of large preconcentration factors and the facility for separation and enrichment using systems with continuous flow. Besides, they usually do not need organic solvents, which may be toxic. For cobalt adsorption determination, several procedures have been proposed involving polyurethane foam 1 , activated carbon 2,3 , Amberlite XAD-4 resin 4,5 , naphthalene 6 and C 18 -bonded silica gel column; 7,8 other techniques as coprecipitation using indium hydroxide as colector 9 , liquid-liquid extraction 10 and cobalt separation as complex and filtration with a menbrane filter.

show abstract

Masking agents in the spectrophotometric determination of metal ions with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol and non-ionic surfactant

Cited by 42 publications

References 0 publications

Alkyl Ethoxylated and Alkylphenol Ethoxylated Nonionic Surfactants: Interaction with Bioactive Compounds and Biological Effects

Alkyl Ethoxylated and Alkylphenol Ethoxylated Nonionic Surfactants: Interaction with Bioactive Compounds and Biological Effects

Catalytic Effect of Ionic Surfactants on the Extraction Rate of Nickel(II) and Palladium(II) with 2-(5-Bromo-2-pyridylazo)-5-diethylaminophenol in the Toluene/Water System

Separation and Preconcentration of Cobalt after Sorption onto Amberlite XAD-2 Loaded with 2-(2-Thiazolylazo)-p-cresol

Contact Info

Product

Resources

About