Aluminum(III)-Selective Screen Printed Sensor Based on Methyl Red
- Autores: Eman Yossri Frag 1, Mohamed M.E.1, Samy Y.1
- 
							Afiliações: 
							- Chemistry Department, Faculty of Science, Cairo University
 
- Edição: Volume 55, Nº 9 (2019)
- Páginas: 841-849
- Seção: Article
- URL: https://journals.rcsi.science/1023-1935/article/view/190898
- DOI: https://doi.org/10.1134/S1023193519090076
- ID: 190898
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Resumo
Modified screen printed electrode (MSPE) with 2-[[4-(dimethyl amino) phenyl] diazenyl] benzoic acid (Methyl Red) was prepared for determination of aluminum ions in water and pharmaceutical (Maalox and Epicogel) samples. The MSPE reveals linear response over a wide concentration range of 5.0 × 10–6–1.0 × 10–2 mol L–1 of aluminum at 25°C with a trivalent cationic slope of 20.4 ± 0.5 mV decade–1 with detection limit 5.0 × 10–6 mol L–1 in pH range 3–5. Moreover, the mechanism of chemical reaction between Methyl Red and aluminum ions on the sensor surface was studied using IR spectra, energy dispersive X-ray analysis (EDX) and scanning electron microscope (SEM). The prepared sensor also showed reproducible and stable response over a period of 14 week with fast response time about 5 s. The proposed potentiometric method was validated according to the IUPAC recommendations. The results obtained from the proposed sensor were comparable with those obtained with inductively coupled plasma mass spectrometry (ICP–MS).
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Sobre autores
Eman Yossri Frag
Chemistry Department, Faculty of Science, Cairo University
							Autor responsável pela correspondência
							Email: emanyossri@sci.cu.edu.eg
				                					                																			                												                	Egito, 							Giza, 12613						
Marwa Mohamed
Chemistry Department, Faculty of Science, Cairo University
														Email: emanyossri@sci.cu.edu.eg
				                					                																			                												                	Egito, 							Giza, 12613						
Yasser Samy
Chemistry Department, Faculty of Science, Cairo University
														Email: emanyossri@sci.cu.edu.eg
				                					                																			                												                	Egito, 							Giza, 12613						
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