| dc.contributor | | en-US |
| dc.creator | Segura, Rodrigo | |
| dc.creator | Díaz, Karina | |
| dc.creator | Pizarro, Jaime | |
| dc.creator | Placencio, Alan | |
| dc.creator | Tapia, Diego | |
| dc.creator | Fajardo, Ángelo | |
| dc.date | 2018-02-09 | |
| dc.date.accessioned | 2019-04-16T16:43:02Z | |
| dc.date.available | 2019-04-16T16:43:02Z | |
| dc.identifier | https://www.jcchems.com/index.php/JCCHEMS/article/view/466 | |
| dc.identifier.uri | http://revistaschilenas.uchile.cl/handle/2250/42468 | |
| dc.description | A glassy carbon electrode was modified by drop-coating technique using 1,4,10,13-Tetraoxa-7,16-diazaciclooctadecano (diaza-18 -crown-6 or DA18C6) and Nafion (NF) for the determination of Pb (II) by square wave anodic stripping voltammetric (SWASV). The new electrode exhibits an increase in due to major pre-concentration of aza crown ether and ionic exchange of NF with metal cations. Optimal conditions were: 3 mmol L-1 DA18C6, 3 wt % NF, 10 mmol L-1 HCl as supporting electrolyte, a frequency of 15 Hz , an accumulation time of 300 s and an accumulation potential of -0.80 V. The detection limit was 0.09 μg L-1 and linear range was 10-50 μg L-1. Interference from metal ions such us Fe (II), Pb (II), Cd (II) and Cu (II) was also studied. The method is sensitive, selective and simple with a relative standard deviation of 11%. | en-US |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | Sociedad Chilena de Química | en-US |
| dc.relation | https://www.jcchems.com/index.php/JCCHEMS/article/view/466/198 | |
| dc.rights | Copyright (c) 2018 Journal of the Chilean Chemical Society | en-US |
| dc.rights | http://creativecommons.org/licenses/by-nc-sa/4.0 | en-US |
| dc.source | Journal of the Chilean Chemical Society; Vol 62, No 4 (2017): Journal of the Chilean Chemical Society | en-US |
| dc.source | 0717-9707 | |
| dc.subject | Aza crown ether; anodic stripping voltammetry; lead | en-US |
| dc.title | ANODIC STRIPPING VOLTAMMETRIC DETERMINATION OF LEAD USING A CHEMICALLY MODIFIED ELECTRODE BASED ON AZA CROWN ETHER | en-US |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
| dc.type | | en-US |
