title: Determination of ten rare-earth elements and yttrium in silicate rocks by ICP-AES without separation and preconcentration.
abstract: Lanthanum, cerium, neodymium, samarium, europium, gadolinium, dysprosium, erbium, ytterbium, lutetium and yttrium have been determined in 8 international rock standards by inductively coupled plasma atomic emission spectrometry (ICP-AES) without prior ion-exchange separation and preconcentration. The results for La, Ce, Nd, Eu, Dy, Yb and Y were in good agreement with the reported values, whereas those for Sm, Gd, Er and Lu were less accurate. However, the results for Sm, Gd, Er and Lu can also be used for studies of petrogenesis.
authors.affiliation: Spectra Laboratory, Wadia Institute of Himalayan Geology, 33 General Mahadeo Singh Road, Dehra Dun 248 001, India.
authors.forename: M S
authors.initials: MS
authors.lastname: Rathi
authors.forename: P P
authors.initials: PP
authors.lastname: Khanna
authors.forename: P K
authors.initials: PK
authors.lastname: Mukherjee