Ion pair-dispersive liquid-liquid microextraction of trace amount of rhodium ion in water and road dust samples prior to flame atomic absorption spectrometry determination

Afzali, Daryoush; Ghazizadeh, Ali; Salari, Hassan

doi:10.1590/s0100-40422011000700004

Cited by 12 publications

(5 citation statements)

References 16 publications

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“…Afzali et al [163] developed an ion pair-DLLME method for separation and preconcentration trace amounts of rhodium ion. The ion-association complex of RhCl 4 -and tetradecyldimetylbenzylamonium was extracted into cholorobenzene.…”

Section: 36mentioning

confidence: 99%

Separation and Preconcentration by Dispersive Liquid–Liquid Microextraction Procedure: Recent Applications

Ojeda

Rojas

2011

Chromatographia

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Section: 36mentioning

confidence: 99%

Separation and Preconcentration by Dispersive Liquid–Liquid Microextraction Procedure: Recent Applications

Ojeda

Rojas

2011

Chromatographia

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“…1 A highly sensitive analytical technique combined with preconcentration and a separation step is often required. 2 Different kinds of sensitive analytical techniques, such as neutron activation analysis, 5 graphite furnace atomic absorption spectrometry (GFAAS), 6,7 inductively coupled plasma-atomic emission spectrometry (ICP-AES), [8][9][10] and inductively coupled plasma-mass spectrometry (ICP-MS), [11][12][13] have been developed for the determination of palladium at low concentrations. Among these methods, GFAAS has been employed here because it is a well-established and cost-effective technique with excellent sensitivity, requiring only small volumes of sample, and the instrumentation is reality available.…”

Section: Introductionmentioning

confidence: 99%

Determination of ultra-trace levels of palladium in water samples by cloud point extraction and graphite furnace atomic absorption spectrometry

Han

Huo

Yang

et al. 2021

Journal of Chemical Research

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A highly sensitive method for the determination of ultra-trace levels of palladium in water samples by cloud point extraction and graphite furnace atomic absorption spectrometry is developed. The procedure is based on complexation of palladium with a laboratory-prepared novel chelating agent, 2-(5-bromo-4-methyl-2-pyridylazo)-5-dimethylaminoaniline (5-Br-4-CH3-PADMA) and subsequent micelle-mediated extraction of the product using the non-ionic surfactant octylphenoxypolyethoxyethanol (Triton X-114) as an extracting agent. Analytical parameters affecting the separation and detection process, such as pH, concentration of the chelating agent and surfactant, equilibration temperature, and time are investigated. The optimized conditions are as follows: pH 6.0 HAc–NaAc buffer solution, 1 × 10−5 mol L−1 5-Br-4-CH3-PADMA, and 0.1% (w/v) Triton X-114. Under the optimized conditions, the calibration graph is linear in the range of 0.1–12 ng/mL, the detection limit is 0.05 ng/mL for palladium, and the relative standard deviation is 2.9% ( c = 1.0 ng/mL, n = 10). The enrichment factor, defined as the ratio of the aqueous solution volume to that of the surfactant-rich phase volume after dilution with HNO3–methanol solution, is 200. The proposed method is applied to the determination of palladium in water samples with satisfactory results.

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“…These methods require the use of a small amount of organic solution. The most commonly used methods are single drop microextraction (SDME) [ 7 , 8 ], coprecipitation [ 9 ], solid phase microextraction (SPME) [ 10 , 11 ], cloud point extraction (CPE) [ 12 ], dispersive liquid-liquid microextraction (DLLME) [ 13 , 14 ], and solidified floating organic drop microextraction (SFODME) [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Solidified Floating Organic Drop Microextraction for the Detection of Trace Amount of Lead in Various Samples by Electrothermal Atomic Absorption Spectrometry

Urucu

Dönmez

Yetimoğlu

2017

Journal of Analytical Methods in Chemistry

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A novel method was developed for determination of trace amounts of lead in water and food samples. Solidified floating organic drop microextraction was used to preconcentrate the lead ion. After the analyte was complexed with 1-(2-pyridylazo)-2-naphthol, undecanol and acetonitrile were added as extraction and dispersive solvent, respectively. Variables such as pH, volumes of extraction and dispersive solvents, and concentration of chelating agent were optimized. Under the optimum conditions, the detection limit of Pb (II) was determined as 0.042 µg L−1 with an enrichment factor of 300. The relative standard deviation is <10%. Accuracy of the developed procedure was evaluated by the analysis of certified reference material of human hair (NCS DC 73347) and wastewater (SPS-WW2) with satisfactory results. The developed procedure was then successfully applied to biscuit and water samples for detection of Pb (II) ions.

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Ion pair-dispersive liquid-liquid microextraction of trace amount of rhodium ion in water and road dust samples prior to flame atomic absorption spectrometry determination

Cited by 12 publications

References 16 publications

Separation and Preconcentration by Dispersive Liquid–Liquid Microextraction Procedure: Recent Applications

Separation and Preconcentration by Dispersive Liquid–Liquid Microextraction Procedure: Recent Applications

Determination of ultra-trace levels of palladium in water samples by cloud point extraction and graphite furnace atomic absorption spectrometry

Solidified Floating Organic Drop Microextraction for the Detection of Trace Amount of Lead in Various Samples by Electrothermal Atomic Absorption Spectrometry

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