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| Titel: |
Inductively Coupled Plasma Optical Emission Spectrometric Determination of Gadolinium in Urine Using Flow Injection On-Line Sorption Preconcentration in a Knotted Reactor |
| Auteur: |
Salonia, J. A. Gasquez, J. A. Martinez, L. D. Cerutti, S. Kaplan, M. Olsina, R. A. |
| Verschenen in: |
Instrumentation science & technology |
| Paginering: | Jaargang 34 (2006) nr. 3 pagina's 305-316 |
| Jaar: |
2006-07-01 |
| Inhoud: |
An on-line gadolinium preconcentration and determination system, implemented with ultrasonic nebulization coupled to inductively coupled plasma optical emission spectrometry (ICP-OES), associated with flow injection (FI) was studied. Gadolinium was retained as Gd-2-(5-bromo-2-pyridilazo)-5-diethylaminophenol complex (Gd-5-Br-PADAP) at pH 9.0, on the inner walls of the knotted reactor (KR). The collected analyte complexes were quantitatively eluted from the 200 cm KR with 30% (v/v) nitric acid. An enhancement factor of 255-fold was obtained (17 for KR and 15 for USN). The detection limit (DL) value for the preconcentration of 15 mL of sample was 4.0 ng L-1. The relative standard deviation (RSD) was 3.5%, calculated from the peak heights obtained. The calibration graph using the preconcentration system for gadolinium was linear, with a correlation coefficient of 0.9996 at levels near the detection limit up to at least 200 µg L-1. The method was successfully applied to the determination of gadolinium in urine samples. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 6 van 12 gevonden artikelen
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