Polarographic study of Eriochome cyanine R and its aluminium complexes
Apstrakt
The behaviour of the two main cathodic polarographic waves of the dye Eriochhrome cyanine R (ECR), A at - 0.45V, and B at -1.0 vs. SCE, were followed from acetate buffer pH 4.8 in the presence of Al3+ ions. Two new waves (E and F) were noticed in the potential region between waves A and B. From amperometric titrations, the mole ratios 1:1 and 2:3 of the formed Al-ECR complexes, which correspond to the waves E and F, were determined. The procedure for indirect analytical determination of aluminium was done by monitoring the variation of the wave A height as a function of the Al3+ ion concentration. A linear response of the wave heigh vs. the metal-ion concentration was obtained in the range fron 0.05 to 0.5 mg/l with standard deviation of ±3% determined for the aluminium ion concentration of 0.1 mg/l (n = 10).
Ključne reči:
Polarography / Mole ratio / Eriochrome cyanine R / Al3+ determination / Al3+ complexesIzvor:
Journal of the Serbian Chemical Society, 1997, 62, 6, 509-514Izdavač:
- Srpsko hemijsko društvo, Beograd
Institucija/grupa
Institut za opštu i fizičku hemijuTY - JOUR AU - Sužnjević, Desanka AU - Blagojević, Stevan AU - Erceg, M AU - Dumanović, D AU - Vučelić, D PY - 1997 UR - https://riofh.iofh.bg.ac.rs/handle/123456789/33 AB - The behaviour of the two main cathodic polarographic waves of the dye Eriochhrome cyanine R (ECR), A at - 0.45V, and B at -1.0 vs. SCE, were followed from acetate buffer pH 4.8 in the presence of Al3+ ions. Two new waves (E and F) were noticed in the potential region between waves A and B. From amperometric titrations, the mole ratios 1:1 and 2:3 of the formed Al-ECR complexes, which correspond to the waves E and F, were determined. The procedure for indirect analytical determination of aluminium was done by monitoring the variation of the wave A height as a function of the Al3+ ion concentration. A linear response of the wave heigh vs. the metal-ion concentration was obtained in the range fron 0.05 to 0.5 mg/l with standard deviation of ±3% determined for the aluminium ion concentration of 0.1 mg/l (n = 10). PB - Srpsko hemijsko društvo, Beograd T2 - Journal of the Serbian Chemical Society T1 - Polarographic study of Eriochome cyanine R and its aluminium complexes EP - 514 IS - 6 SP - 509 VL - 62 UR - conv_1314 ER -
@article{ author = "Sužnjević, Desanka and Blagojević, Stevan and Erceg, M and Dumanović, D and Vučelić, D", year = "1997", abstract = "The behaviour of the two main cathodic polarographic waves of the dye Eriochhrome cyanine R (ECR), A at - 0.45V, and B at -1.0 vs. SCE, were followed from acetate buffer pH 4.8 in the presence of Al3+ ions. Two new waves (E and F) were noticed in the potential region between waves A and B. From amperometric titrations, the mole ratios 1:1 and 2:3 of the formed Al-ECR complexes, which correspond to the waves E and F, were determined. The procedure for indirect analytical determination of aluminium was done by monitoring the variation of the wave A height as a function of the Al3+ ion concentration. A linear response of the wave heigh vs. the metal-ion concentration was obtained in the range fron 0.05 to 0.5 mg/l with standard deviation of ±3% determined for the aluminium ion concentration of 0.1 mg/l (n = 10).", publisher = "Srpsko hemijsko društvo, Beograd", journal = "Journal of the Serbian Chemical Society", title = "Polarographic study of Eriochome cyanine R and its aluminium complexes", pages = "514-509", number = "6", volume = "62", url = "conv_1314" }
Sužnjević, D., Blagojević, S., Erceg, M., Dumanović, D.,& Vučelić, D.. (1997). Polarographic study of Eriochome cyanine R and its aluminium complexes. in Journal of the Serbian Chemical Society Srpsko hemijsko društvo, Beograd., 62(6), 509-514. conv_1314
Sužnjević D, Blagojević S, Erceg M, Dumanović D, Vučelić D. Polarographic study of Eriochome cyanine R and its aluminium complexes. in Journal of the Serbian Chemical Society. 1997;62(6):509-514. conv_1314 .
Sužnjević, Desanka, Blagojević, Stevan, Erceg, M, Dumanović, D, Vučelić, D, "Polarographic study of Eriochome cyanine R and its aluminium complexes" in Journal of the Serbian Chemical Society, 62, no. 6 (1997):509-514, conv_1314 .