A novel optical chemical sensor for thallium(III) determination using 4-(5-bromo-2-pyridylazo)-5-(diethylamino)-phenol

Fouladgar, Masoud; Ensafi, Ali A.

doi:10.1016/j.snb.2009.09.057

Cited by 21 publications

(3 citation statements)

References 22 publications

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“…Instead of the use of fresh solvent as an extracting phase for each sample, the reusability of adsorbent was as high as greater than 30 cycles without any loss in its sorption behavior. A comparison of the proposed method with the other reported preconcentration methods [31][32][33][34][35][36][37][38][39] for zinc and thallium extraction from water samples are given in Table 6. The obtained detection limits by the proposed method are comparable to most of those reported in the literature.…”

Section: Resultsmentioning

confidence: 99%

Flame Atomic Absorption Spectrometric Determination of Trace Amounts of Zinc and Thallium in Different Matrixes after Solid Phase Extraction on Modified Multiwalled Carbon Nanotubes

Mohammadi¹

2012

AJAC

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The potential of modified multiwallcd carbon nanotubes, as a solid-phase extraction sorbent for the simultaneous separation and preconcentration of zinc and thallium has been investigated. Zinc and thallium were adsorbed quantitatively onto modified multiwalled carbon nanotubes in the pH range of 3 -6.5. Parameters influencing the simultaneous preconcentration of Zn(II) and Tl(I) ions such as pH of the sample, sample and eluent flow rate, type and volume of elution solution and interfering ions, have been examined and optimized. Linearity was maintained between 0.1 to 20.0 µg·mL -1 for thallium and 20.0 ng·mL -1 to 5.0 µg·mL -1 for zinc in the final solution. The defection limits based on three times the standard deviation of the blank signal (n = 8) for thallium and zinc were 5.1 and 1.4 ng·mL -1 , respectively. Seven replicate determination of a mixture of 5.0 and 0.2 µg·mL -1 of thallium and zinc in the final solution gave a mean absorbance of 0.085 and 0.074 with relative standard deviation 1.5% and 1.7%, respectively. The method has been applied for the determination of trace amounts of zinc and thallium in biological and water sample with satisfactory results.

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Section: Resultsmentioning

confidence: 99%

Flame Atomic Absorption Spectrometric Determination of Trace Amounts of Zinc and Thallium in Different Matrixes after Solid Phase Extraction on Modified Multiwalled Carbon Nanotubes

Mohammadi¹

2012

AJAC

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“…The response time of the optodes is dened as the diffusion time of the metal ions from the solution into the membrane (slowest step in the complexation process). 49 The inuence of this factor on the optode response was determined (Table 1 membrane no. [13][14][15][16].…”

Section: Response Time Of the Optodementioning

confidence: 99%

Utilization of a plasticized PVC optical sensor for the selective and efficient detection of cobalt(ii) in environmental samples

2022

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“…Response time of optodes is defined as the diffusion time of the metal ions from solution into the membrane (slowest step in complexation process) [44].…”

Section: Response Time Of Optodementioning

confidence: 99%

An Optical Chemical Sensor For Monitoring Of Nickel In Waters And Hydrogen Peroxide Samples

Babaee

Pakdehi

Nabavi

2016

JNDC

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A novel optical chemical sensor for thallium(III) determination using 4-(5-bromo-2-pyridylazo)-5-(diethylamino)-phenol

Cited by 21 publications

References 22 publications

Flame Atomic Absorption Spectrometric Determination of Trace Amounts of Zinc and Thallium in Different Matrixes after Solid Phase Extraction on Modified Multiwalled Carbon Nanotubes

Flame Atomic Absorption Spectrometric Determination of Trace Amounts of Zinc and Thallium in Different Matrixes after Solid Phase Extraction on Modified Multiwalled Carbon Nanotubes

Utilization of a plasticized PVC optical sensor for the selective and efficient detection of cobalt(ii) in environmental samples

An Optical Chemical Sensor For Monitoring Of Nickel In Waters And Hydrogen Peroxide Samples

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