Adsorption of Sodiumn-Decylbenzenesulfonate onto Alumina: Relationships between Macro- and Microscopic Behavior

Nagashima, Kazuomi; Blum, Frank D.

doi:10.1006/jcis.1999.6202

Cited by 20 publications

(11 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are several studies on the adsorption of anionic surfactants on soil [45][46][47][48][49][50][51] or soil constituents like alumina [52][53][54][55], clay [56][57][58], sediment [59][60][61]. Among the anionic surfactants, LAS is the surfactant used extensively in detergents in throughout the world because of its effectiveness, versatility, cost/performance ratio and environmental safety.…”

Section: Anionic Surfactant Adsorptionmentioning

confidence: 99%

Surfactant-enhanced remediation of organic contaminated soil and water

Paria

2008

Advances in Colloid and Interface Science

485

237

View full text Add to dashboard Cite

Section: Anionic Surfactant Adsorptionmentioning

confidence: 99%

Surfactant-enhanced remediation of organic contaminated soil and water

Paria

2008

Advances in Colloid and Interface Science

485

237

View full text Add to dashboard Cite

“…Generally, ionic surfactant adsorption isotherms on mineral oxides can be divided into three regions [41,42]. In the first region, the adsorbed surfactant molecules spread themselves on the oxides surface to form a single-layer coverage (hemimicelles), probably through coulombic attraction between charged oxide surface and the oppositely charged surfactant head group.…”

Section: Effect Of Surfactant On the Zeta-potential Of The Fe 3 O 4 Npsmentioning

confidence: 99%

Mixed hemimicelles solid-phase extraction based on cetyltrimethylammonium bromide-coated nano-magnets Fe3O4 for the determination of chlorophenols in environmental water samples coupled with liquid chromatography/spectrophotometry detection

Zhao

Shi

et al. 2008

Journal of Chromatography A

194

View full text Add to dashboard Cite

Mixed hemimicelles solid-phase extraction (SPE) based on cetyltrimethylammonium bromide (CTAB)-coated nano-magnets Fe 3 O 4 was investigated for the preconcentration of four chlorophenols (CPs) in environmental water samples prior to HPLC-spectrophotometry determination in this paper. By the rapid isolating (about 5 min) of Fe 3 O 4 nanoparticles (NPs) through placing a Nd-Fe-B strong magnet on the bottom of beaker, the time-consuming preconcentration process of loading large volume sample in conversional SPE method with a column can be avoided. The unique properties of Fe 3 O 4 NPs such as high surface area and strong magnetism were utilized adequately in the SPE process. This novel separation method produced a high preconcentration rate and factor. A comprehensive study of the adsorption conditions such as the Fe 3 O 4 NPs zeta-potential, CTAB added amounts, pH value, standing time and maximal extraction volume was also presented. Under optimized conditions, four analytes of 2-chlorophenol (2-CP), 2,4-dichlorophenol (2,4-DCP), 2,4,6-trichlorophenol (TCP) and pentachlorophenol (PCP) were quantitatively extracted. The method was then used to determine four CPs in five real environmental water samples. High concentration factors (700) were achieved for each of the analytes, with observed detection limits ranging between 0.11 and 0.15 g L −1 . The accuracy of method was evaluated by recovery measurements on spiked samples. Good recovery results (83-98%) with satisfactory relative standard deviation (RSD) were achieved. It is important to note that satisfactory preconcentration factors and extraction recoveries for the four CPs were obtained with only a little amount of Fe 3 O 4 NPs (0.1 g) and CTAB (60 mg). To the best of our knowledge, this was the first time a mixed hemimicelles SPE method based on Fe 3 O 4 NPs magnetic separation had been used for the pretreatment of environmental water samples.

show abstract

“…Langmuir) very well, which was probably because adsorbing RTILs onto silica surface was not a simple surface phenomenon but a multistep process involving different kinds of interactions. Generally, ionic surfactant adsorption isotherms on metal oxides can be divided into three regions [40,41]. In the first region the adsorbed ionic surfactant molecules spread themselves on the surface to form singlelayer coverage (hemimicelles), probably through coulombic attractive interactions between charged metal oxides surface and the oppositely charged surfactants head group.…”

Section: Adsorption Isotherms Of Rtils On Silica Particlesmentioning

confidence: 99%

Analysis of phthalates via HPLC-UV in environmental water samples after concentration by solid-phase extraction using ionic liquid mixed hemimicelles

Cai

Shi

et al. 2008

Talanta

157

View full text Add to dashboard Cite

Ionic liquid mixed hemimicelles-based solid-phase extraction for the preconcentration of five phthalates in environmental water sample was investigated in this paper. A comparative study on the use of room temperature ionic liquids (RTILs) 1-hexyl-3-methylimidazolium bromide ([C 6 mim]Br) and 1-dodecyl-3-methylimidazolium bromide ([C 12 mim]Br)-coated silica as sorbents was presented. Owing to having bigger adsorption amounts for analytes [C 12 mim], Br-coated silica was selected as SPE material and the five analytes di-ethyl-phthalate (DEP), di-n-propyl-phthalate (DnPP), di-n-butyl-phthalate (DnBP), di-cyclohexyl-phthalate (DcHP) and di-(2-ethylhexyl)-phthalate (DEHP) can be quantitatively extracted under optimal conditions. The analytes retained on the cartridge were desorbed completely with 3 mL methanol (pH 2). Predominant factors influencing the extraction efficiency, such as RTILs concentration, pH value, ionic strength and breakthrough volume were discussed. The proposed method had been applied to determining the five phthalates in four environmental water samples and concentration factor of 600 was achieved easily. Detection limits obtained ranged between 0.12 and 0.17 g/L. The accuracy of this method was evaluated by recovery measurement on spiked samples, and good recovery results (85-107%) with relative standard deviation (R.S.D.) of below 6% were achieved.

show abstract

Adsorption of Sodiumn-Decylbenzenesulfonate onto Alumina: Relationships between Macro- and Microscopic Behavior

Cited by 20 publications

References 45 publications

Surfactant-enhanced remediation of organic contaminated soil and water

Surfactant-enhanced remediation of organic contaminated soil and water

Mixed hemimicelles solid-phase extraction based on cetyltrimethylammonium bromide-coated nano-magnets Fe3O4 for the determination of chlorophenols in environmental water samples coupled with liquid chromatography/spectrophotometry detection

Analysis of phthalates via HPLC-UV in environmental water samples after concentration by solid-phase extraction using ionic liquid mixed hemimicelles

Contact Info

Product

Resources

About