Coprecipitation of lead and cadmium using copper(II) mercaptobenzothiazole prior to flame atomic absorption spectrometric determination

Tokalıoğlu, Şerife; Oymak, Tülay; Kartal, Şenol

doi:10.1007/s00604-006-0724-5

Cited by 49 publications

(32 citation statements)

References 26 publications

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“…To an anhydrous ethanol (100 mL) solution of (1) was added MBT (10 mmol, 1.87 g) and KOH (10 mmol, 0.56 g), after which it was refluxed for 6 h. The mixture was evaporated under reduced pressure to yield a yellow solid, subsequently recrystallizing with anhydrous ethanol (10 mL) overnight. The liquid obtained by removing any impurity was concentrated under reduced pressure to give bromide salt (2). A mixture of a water (100 mL) solution of the bromide salt (2) (8 mmol, 2.78 g) and KPF6 (8.8 mmol, 1.62 g) was mixed overnight to obtain the resulting product (3), which was collected by filteration, washed with DDW, and dried under a vacuum to give a white solid.…”

Section: Synthesis Of Tsil-mbtmentioning

confidence: 99%

“…Cd 2+ is listed as the sixth-most poisonous substance jeopardizing the health of humans. 1 In mammals, Cd 2+ is known to accumulate preferentially in the kidneys, 2 and the effect of its acute poisoning is manifested in a variety of symptoms, including high blood pressure, kidney damage, anemia, hypertension, bone marrow disordeds and cancer. 3 There are several techniques employed for the determination of cadmium, such as flame atomic absorption spectrometry (FAAS), graphite furnace atomic absorption spectrometry (GFAAS), inductively coupled plasma atomic emission spectrometry (ICP-AES), and inductively coupled plasma mass spectrometry (ICP-MS).…”

Section: Introductionmentioning

confidence: 99%

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A Novel Hydrophobic Task Specific Ionic Liquid for the Extraction of Cd(II) from Water and Food Samples as Applied to AAS Determination

Fang

Liu

et al. 2010

ANAL. SCI.

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Hydrophobic task specific ionic liquid (TSIL) functionalized 2-mercaptobenzothiazole (MBT) was synthesized and characterized by NMR and HRMS. The capability of TSIL-MBT for the selective separation and preconcentration of Cd 2+ , which was determined by flame atomic absorption spectrometry (FAAS) from water and food samples, was investigated. The TSIL-MBT with high selectivity for the extraction of Cd 2+ was discussed by comparing with a traditional extractant, such as ammonium pyrrolidine dithiocarbamate (APDC) and diethydithiocarbamate (DDTC), and the recoveries of the extraction Cd 2+ by TSIL-MBT were much better than APDC and DDTC. The proposed method was evaluated by analyzing two certified reference materials. The Cd 2+ concentration, determined by the developed methodology, was in good agreement with certified values.

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Section: Synthesis Of Tsil-mbtmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Novel Hydrophobic Task Specific Ionic Liquid for the Extraction of Cd(II) from Water and Food Samples as Applied to AAS Determination

Fang

Liu

et al. 2010

ANAL. SCI.

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“…The evaporation process was repeated twice by using 5 ml of concentrated nitric acid and 2 ml of concentrated hydrofluoric acid. The resulting solution was diluted to 50 ml with water and the described procedure was applied (Tokalıoğlu et al 2007;Kendüzler and Türker 2005).…”

Section: Sample Pretreatmentmentioning

confidence: 99%

“…These methods include ion exchange (Pehlivan and Altun 2007), solvent extraction (Atanassova and Dukov 2006), cloud-point extraction (Silva et al 2001), coprecipitation (Tokalıoğlu et al 2007) and solid phase extractions (Akl et al 2005;Tokalıoğlu et al 2004;Zhu et al 2007). Solid phase extraction (SPE) is a well-established sample pretreatment technique in pharmaceutical, biomedical and environmental field because it demands less organic solvent and can remove interferences and preconcentrates the objective simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Solid phase extraction of Cu(II), Ni(II), Pb(II), Cd(II) and Mn(II) ions with 1-(2-thiazolylazo)-2-naphthol loaded Amberlite XAD-1180

Tokalıoğlu

Yılmaz

Kartal

2008

Environ Monit Assess

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A new method for separation and preconcentration of trace amounts of Cu(II), Ni(II), Pb(II), Cd(II) and Mn(II) ions in various matrices was proposed. The method is based on the adsorption and chelation of the metal ions on a column containing Amberlite XAD-1180 resin impregnated with 1-(2-thiazolylazo)-2-naphthol (TAN) reagent prior to their determination by flame atomic absorption spectrometry (FAAS). The effect of pH, type, concentration and volume of eluent, sample volume, flow rates of sample and elution solutions, and interfering ions have been investigated. The optimum pH for simultaneous retention of all the metal ions was 9. Eluent for quantitative elution was 20 ml of 2 mol l(-1) HNO(3). The optimum sample and eluent flow rates were found as 4 ml min(-1), and also sample volume was 500 ml, except for Mn (87% recovery). The sorption capacity of the resin was found to be 0.77, 0.41, 0.57, and 0.30 mg g(-1) for Cu(II), Ni(II), Cd(II), and Mn(II), respectively. The preconcentration factor of the method was 200 for Cu(II), 150 for Pb(II), 100 for Cd(II) and Ni(II), and 50 for Mn(II). The recovery values for all of the metal ions were > or = 95% and relative standard deviations (RSDs) were < or = 5.1%. The detection limit values were in the range of 0.03 and 1.19 microg l(-1). The accuracy of the method was confirmed by analysing the certified reference materials (TMDA 54.4 fortified lake water and GBW 07605 tea samples) and the recovery studies. This procedure was applied to the determination of Cu(II), Ni(II), Pb(II), Cd(II) and Mn(II) in waste water and lake water samples.

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“…Low solubility in water and capacity to form complexes with a large variety of metals are the characteristics required for the use of these substances in precipitation methods. The precipitation efficiency is highly influenced by the hydrophobicity of ligands and complexes (Cerutti et al 2005;Tokalioglu et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Determination of copper in biological samples by flame atomic absorption spectrometry after precipitation with Me-BTAP

Lemos

Novaes

Carvalho

et al. 2008

Environ Monit Assess

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A simple and sensitive method was developed for determination of trace copper by direct precipitation preconcentration and detection with Flame Atomic Absorption Spectrometry (FAAS). The reagent 2-[2'-(6-methyl-benzothiazolylazo)]-4-aminophenol (Me-BTAP) was used as precipitating agent. The experimental conditions for the quantitative precipitation of copper, such as pH, amount of reagents, temperature and the effect of diverse ions on the precipitation have been investigated. It was found that copper is quantitatively extracted (> or =95%) and the method provides a sensitivity enhancement of 40-fold for a 10 ml sample volume with a detection limit of 0.5 microg l(-1). The proposed method was successfully applied for the determination of trace copper in water, urine and biological samples.

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Coprecipitation of lead and cadmium using copper(II) mercaptobenzothiazole prior to flame atomic absorption spectrometric determination

Cited by 49 publications

References 26 publications

A Novel Hydrophobic Task Specific Ionic Liquid for the Extraction of Cd(II) from Water and Food Samples as Applied to AAS Determination

A Novel Hydrophobic Task Specific Ionic Liquid for the Extraction of Cd(II) from Water and Food Samples as Applied to AAS Determination

Solid phase extraction of Cu(II), Ni(II), Pb(II), Cd(II) and Mn(II) ions with 1-(2-thiazolylazo)-2-naphthol loaded Amberlite XAD-1180

Determination of copper in biological samples by flame atomic absorption spectrometry after precipitation with Me-BTAP

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