TY - JOUR
T1 - Determination of rare-earth elements in rocks by isotope-excited X-ray fluorescence spectrometry
AU - Kunzendorf, Helmar
AU - Wollenberg, H.A.
PY - 1970
Y1 - 1970
N2 - Isotope-excited X-ray fluorescence spectrometry furnishes a rapid determination of rare-earth elements in unprepared rock samples. The samples are excited by 241Am γ-rays, generating X-ray spectra on a multichannel pulse-height analyser. Gaussian peaks of the Kα and Kβ X-ray energies are treated by the least-squares method to yield the fractions of La, Ce, Pr, and Nd in the samples. A calibration was established between the fractions of Ce and Nd and their abundances determined by mass spectrometry. Statistical considerations indicated that detection limits are of the order of 10 ppm. An X-ray spectrometric scan of a longitudinally sliced drill core showed a close correlation between rare-earth abundances and appropriate minerals.
AB - Isotope-excited X-ray fluorescence spectrometry furnishes a rapid determination of rare-earth elements in unprepared rock samples. The samples are excited by 241Am γ-rays, generating X-ray spectra on a multichannel pulse-height analyser. Gaussian peaks of the Kα and Kβ X-ray energies are treated by the least-squares method to yield the fractions of La, Ce, Pr, and Nd in the samples. A calibration was established between the fractions of Ce and Nd and their abundances determined by mass spectrometry. Statistical considerations indicated that detection limits are of the order of 10 ppm. An X-ray spectrometric scan of a longitudinally sliced drill core showed a close correlation between rare-earth abundances and appropriate minerals.
U2 - 10.1016/0029-554X(70)90202-8
DO - 10.1016/0029-554X(70)90202-8
M3 - Journal article
SN - 0029-554X
VL - 87
SP - 197
EP - 203
JO - Nuclear Instruments and Methods
JF - Nuclear Instruments and Methods
IS - 2
ER -