dc.creator | Farias, Gustavo Marcelo | |
dc.creator | Wuilloud, Rodolfo German | |
dc.creator | Moyano, Susana | |
dc.creator | Gasquez, José Antonio | |
dc.creator | Olsina, Roberto Antonio | |
dc.creator | Martinez, Luis Dante | |
dc.date.accessioned | 2020-03-27T21:03:06Z | |
dc.date.accessioned | 2022-10-15T02:27:06Z | |
dc.date.available | 2020-03-27T21:03:06Z | |
dc.date.available | 2022-10-15T02:27:06Z | |
dc.date.created | 2020-03-27T21:03:06Z | |
dc.date.issued | 2002-09-01 | |
dc.identifier | Farias, Gustavo Marcelo; Wuilloud, Rodolfo German; Moyano, Susana; Gasquez, José Antonio; Olsina, Roberto Antonio; et al.; Determination of cobalt in urine by FI-ICP-AES with online preconcentration; Preston Publ Inc; Journal Of Analytical Toxicology; 26; 6; 1-9-2002; 360-364 | |
dc.identifier | 0146-4760 | |
dc.identifier | http://hdl.handle.net/11336/101189 | |
dc.identifier | 1945-2403 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4335005 | |
dc.description.abstract | A method for the preconcentration and determination of cobalt in human urine samples was developed. The online preconcentration and determination were attained using inductively coupled plasma atomic emission spectromety (ICP-AES) coupled to a flow injection (FI) method. Cobalt was retained on an Amberlite XAD-7 resin as cobalt-2-(5-bromo-2-pyridylazo)-5-diethylaminophenol complex at pH 9.5. Cobalt was removed from the microcolumn with perchloric acid. A sensitivity enhancement factor of 90 was obtained with respect to cobalt determination by ICP-AES without preconcentration. The value of detection limit for the preconcentration method proposed was 25 ng/L. The precision for 10 replicate determinations at the 5 mg/L (mean ± SD, 5.1 ± 0.14) Co level was 2.7% relative standard deviation, calculated from the peak heights obtained. The calibration graph preconcentration method for cobalt was linear with a correlation coefficient of 0.9994 from approximately 0.25 mg/L up to at least 100 mg/L. The method was successfully applied to the determination of cobalt in human urine samples. | |
dc.language | eng | |
dc.publisher | Preston Publ Inc | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/jat/article/26/6/360/703298 | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/jat/26.6.360 | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/openAccess | |
dc.subject | COBALT | |
dc.subject | HUMAN ORINE SAMPLES | |
dc.subject | INDUCTIVELY COUPLED PLASMA ATOMIC EMISSION SPECTROMETY | |
dc.subject | FLOW INJECTION | |
dc.title | Determination of cobalt in urine by FI-ICP-AES with online preconcentration | |
dc.type | info:eu-repo/semantics/article | |
dc.type | info:ar-repo/semantics/artículo | |
dc.type | info:eu-repo/semantics/publishedVersion | |