Details

Autor(en) / Beteiligte

• Stummeyer, J
• Kittel, S
• Wunsch, G

Titel

Routine Determination of Element Traces in Niobium and Tantalum

Ist Teil von

• Analytica chimica acta, 1992-03, Vol.258 (2), p.329-334

Erscheinungsjahr

1992

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• The limitations of the determination of 14 trace elements (Ag, Ba, Ca, Cd, cobalt, Cr, Cu, Fe, magnesium, Mn, Ni, Sr, Tl, and Zn) in Nb and Ta by inductively coupled plasma atomic emission spectrometry (ICP-AES) are pointed out. Niobium and Ta can be removed by a wet chemical trace-matrix separation procedure using cation exchange from hydrofluoric acid solution. The traces can be isolated from a large amount of sample and collected in a small volume of liquid. Detection limits using ICP-AES are thereby lowered by about a factor of ten. The matrix-free solutions are suitable for measurement by ICP-MS.