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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Araujo, An
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2017Synthesis of distinctly thiol-capped CdTe quantum dots under microwave heating: multivariate optimization and characterizationcitations
- 2009Modeling, Structural, and Spectroscopic Studies of Lanthanide-Organic Frameworkscitations
- 2006Extraction and recovery of chromium from electroplating sludgecitations
- 2004Sequential injection analysis of lead using time-based colorimetric detection and preconcentration on an anionic-exchange resincitations
- 2004Simultaneous determination of pH, chloride and nickel in electroplating baths using sequential injection analysiscitations
- 2001Sequential injection analysis of captopril based on colorimetric and potentiometric detectioncitations
Places of action
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article
Sequential injection analysis of lead using time-based colorimetric detection and preconcentration on an anionic-exchange resin
Abstract
The development of a sequential injection analysis manifold for the colorimetric determination of lead in water samples is described. The concentration of lead was assessed from its catalytic effect on the reaction of resazurine reduction caused by sulfide in an alkali medium. To that effect, the reaction zone was stopped at the detector, and the time interval required for the attainment of an absorbance decrease of 0.800 at the wavelength of 6 10 nm was estimated. Interference of other transition metals of the samples was minimized by adding potassium iodide to the sample and retaining the iodocomplexes formed in an on-line anionic resin (AG1 X8). Elution was made with a 2 mol/L sodium hydroxide solution. The relationship [SIA] mug/L = 0.99 (+/-0.11) x [ETAAS] mug/L + 0 (+/-4) was obtained upon comparing the results given by the proposed system and by electrothermal atomization atomic absorption spectrometry (ETAAS) after the analysis of ten water samples.