Details zur Publikation

Referenztyp Zeitschriften
DOI / URL Link
Titel (primär) Enrichment of rare-earth elements (REE) and Gd-DTPA in surface water samples by means of countercurrent chromatography (CCC)
Autor Hennebrüder, K.; Engewald, W.; Stärk, H.-J.; Wennrich, R.
Journal / Serie Analytica Chimica Acta
Erscheinungsjahr 2005
Department ANA; SANA
Band/Volume 542
Heft 2
Seite von 216
Seite bis 221
Sprache englisch
Keywords Gd-DTPA; REE; ICP-MS; Preconcentration procedures; Countercurrent chromatography; River water
Abstract An analytical scheme was developed for the determination of rare-earth elements and gadolinium diethylenetriaminepentaacetate (Gd-DTPA) in river water by ICP-MS. Since the concentration of Gd-DTPA and the rare-earth elements in river water is often lower than the limits of detection in quadrupole ICP-MS applying pneumatic nebulization, a preconcentration procedure is essential. In this work, the capabilities of countercurrent chromatography (CCC) for preconcentration of REE were investigated. For preconcentration ethylhexylphosphates as stationary phase had been used. Acidified aqueous samples (pH 2) and river water spiked with REE and Gd-DTPA were under study. The procedure was compared with solid phase extraction (SPE) using the same samples and ethylhexylphosphates as stationary phase. The recovery of the light and middle REE was found to be at about 100%, which was found to be more efficient than applying SPE. In contrast, the recovery rates for Yb and Lu were low (and poorly reproducible) using CCC (57% and 73%, respectively) while significant better results were obtained with SPE (89% and 84%, respectively). The recoveries of Gd applying Gd-DTPA were 80 ± 4% in the investigation of river water samples.
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=3437
Hennebrüder, K., Engewald, W., Stärk, H.-J., Wennrich, R. (2005):
Enrichment of rare-earth elements (REE) and Gd-DTPA in surface water samples by means of countercurrent chromatography (CCC)
Anal. Chim. Acta 542 (2), 216 - 221