| dc.creator | Torres, Juan F. | |
| dc.creator | Reiber, Andreas | |
| dc.creator | Mac?as, Mario | |
| dc.creator | Garc?a-Beltr?n, Olimpo | |
| dc.creator | Nagles, Edgar | |
| dc.creator | Hurtado, John | |
| dc.date | 2019-03-11T16:19:08Z | |
| dc.date | 2019-03-11T16:19:08Z | |
| dc.date | 2017-03-12 | |
| dc.date.accessioned | 2023-08-31T19:23:10Z | |
| dc.date.available | 2023-08-31T19:23:10Z | |
| dc.identifier | Torres, J. F., Reiber, A., Mac?as, M., Garc?a-Beltran, O., Nagles, E., & Hurtado, J. (2017). Synthesis and structural characterization of new macrocyclic ester. study as an immobilization agent for determination of lead by anodic stripping voltammetry. International Journal of Electrochemical Science, 12(4), 3109?3119. | |
| dc.identifier | 1452-3981 | |
| dc.identifier | http://www.electrochemsci.org/papers/vol12/120403109.pdf | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/8557722 | |
| dc.description | New macrocyclic ester (L) was yielded through reaction of catechol with isophthaloylchloride and isolated as white solid, air stable at room temperature. L was characterized by melting point, mass spectra, FTIR and NMR ( 1 H, 13 C) spectroscopy. The molecular structure was determined by single-crystal X-ray diffraction. The macrocyclic compound was evaluated to determine ultra-trace concentrations of Pb (II) by anodic stripping voltammetry in the presence of Cd(II). The method is based on the formation of a complex between lead and the macrocyclic ester, immobilized on a vitreous carbon electrode, allowing the oxidation of lead by voltammetric scan, using square wave modulation method. Anodic peak current was observed at -0.20 V for Pb(II). Under the best experimental conditions (pH 4.0; L concentration 10.0 mmol L -1 ; accumulative potential (Eacc) -0.8 V and accumulative time (tacc) of 60 s) anodic peak current was proportional to the Pb (II) concentration up to 80.0 ?g L -1 , with a detection limit (3?) of 0.33 ?g L -1 . The proposed method was validated by determining Pb(II) in model solution with ultra-pure water with satisfactory results. | |
| dc.language | en | |
| dc.publisher | International Journal of Electrochemical Science | |
| dc.subject | Macrocyclic ester | |
| dc.subject | Modified electrode | |
| dc.subject | Lead | |
| dc.subject | Anodic stripping voltammetry | |
| dc.title | Synthesis and structural characterization of new macrocyclic ester. study as an immobilization agent for determination of lead by anodic stripping voltammetry | |
| dc.type | Article | |
