Determination of trace nickel in water samples by cloud point extraction preconcentration coupled with graphite furnace atomic absorption spectrometry

Sun, Zhimei; Liang, Pei; Ding, Qiong; Cao, Jing

doi:10.1016/j.jhazmat.2006.03.021

Cited by 67 publications

(26 citation statements)

References 29 publications

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“…For this purpose, various analytical methods have been used, such as adsorption on activated carbon, 3,4 co-precipitation, 5,6 column extraction, 7,8 ion-selective electrode 9,10 liquid-liquid extraction (LLE), 11 and cloud-point extraction (CPE). [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] Cloud-point extraction (CPE), employed in analytical chemistry to separate and preconcentrate organic compounds and metal ions, has been well reviewed. [28][29][30] As a green liquidliquid extraction method, compared with the traditional organic liquid-liquid extraction, cloud-point methodology requires a very small amount of non-flammable and non-volatile surfactants that are benign to the environment.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Bis(amino alcohol)oxalamides and Their Usage for the Preconcentration of Trace Metals by Cloud Point Extraction

et al. 2008

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C2-Symmetric two bis(amino alcohol)oxalamides (diamidediols) were synthesized and fully characterized. A new method was developed and successfully applied for the simultaneous preconcentration of both trace and toxic metals in water, by using C2-symmetric compounds. Under the optimum experimental conditions (i.e. pH = 10.10% w/v octylphenoxy-polyethoxyethanol (Triton X-114)), calibration graphs were linear in the range of 2.5 -25.0 ng mL -1 for Cu and Cd, 5.0 -25.0 ng mL -1 for Co and Ni. The enrichment factors were 18, 23, 18 and 20 for Cd, Cu, Co and Ni in the case of DAD1, respectively; 20, 22, 17 and 20 for Cd, Cu, Co and Ni in the case of DAD2. The limits of detection for DAD1 were found to be 0.45, 0.50, 1.25 and 0.60 ng mL -1 for Cd, Cu, Co and Ni, respectively, and for DAD2 were found to be 0.44, 0.25, 0.60 and 1.55 ng mL -1 for Cd, Cu, Co and Ni, respectively. The developed method was applied to the determination of Cu, Cd, Co and Ni in water samples and certified reference materials with satisfactory results.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Bis(amino alcohol)oxalamides and Their Usage for the Preconcentration of Trace Metals by Cloud Point Extraction

et al. 2008

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“…The presented method was compared with a variety of the recently reported Ni 2+ preconcentration-determination methods [18,[20][21][22][23][24][25][26]. Table 3 compares the present method with the other reported preconcentration based Ni 2+ determination methods.…”

Section: Detection Limitmentioning

confidence: 99%

Ultra-sensitive spectrophotometric determination of nickel after complexation and membrane filtration

et al. 2012

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We report on a simple, sensitive and selective method for the spectrophotometric determination of Ni 2+ in water samples. The analyte ions were collected on a membrane filter in the form of their red complex with 1-(2-pyridylazo)-2-naphthol (PAN), and the absorption spectra of the colored membrane filters were acquired. Effects of pH value, sample volume, and amount of PAN were examined in order to optimize sensitivity. The interference by common other ions was eliminated using appropriate masking agents. The absorbance is linearly related to the concentration of Ni 2+ in the ranges from 0.3 to 1.5 μg L −1 , and from 2 to 10 μg L −1 , respectively, the correlation coefficients (R 2 ) being 0.9871 and 0.9954. Under the optimal conditions, the detection limit is 0.1 μg L −1 . The recoveries in case of spiked samples are between 95.0% and 101.5%, and the relative standard deviations range from 2.8% to 4.1%.

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“…Recently great attention has been paid to its great potentials in separating toxic solutes from several matrices 18,19 . Procedures for preconcentration of metal ions using CPE have been based on the extraction of these metallic substances as low water-soluble chelate complexes 20 .…”

Section: Research Articlementioning

confidence: 99%

Flame Atomic Absorption Determination of Ni2+, Cu2+ and Co2+ Ions in Some Water and Food Samples After Cloud Point Extraction Using a Thio Schiff-Base as a New Complexing Agent

Shokrollahi¹,

Eslami²,

Kianfar³

2012

Chem Sci Trans

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N(2-Thiophenyl)-1-(2-hydoxyphenyl)Imine (NTPHPI) was used as a proper complexing agent for the preconcentration by cloud point extraction followed by atomic absorption spectrometric to determine of Ni 2+ , Cu 2+ and Co 2+ ions in real samples. NTPHPI and Triton X-114 were used as hydrophobic ligand and non-ionic surfactant respectively and the pH of 8 was chosen as optimum. Under the optimized experimental conditions, the selective preconcentration and determination of low concentration of Ni 2+ , Cu 2+ and Co 2+ ions as 1, 5 and 6 ng mL -1 can be made respectively. The proposed method was successfully applied to the preconcentration and low-level determination of the cited ions in different water, chocolate and honey samples.

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Determination of trace nickel in water samples by cloud point extraction preconcentration coupled with graphite furnace atomic absorption spectrometry

Cited by 67 publications

References 29 publications

Synthesis of Bis(amino alcohol)oxalamides and Their Usage for the Preconcentration of Trace Metals by Cloud Point Extraction

Synthesis of Bis(amino alcohol)oxalamides and Their Usage for the Preconcentration of Trace Metals by Cloud Point Extraction

Ultra-sensitive spectrophotometric determination of nickel after complexation and membrane filtration

Flame Atomic Absorption Determination of Ni2+, Cu2+ and Co2+ Ions in Some Water and Food Samples After Cloud Point Extraction Using a Thio Schiff-Base as a New Complexing Agent

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