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Standard reference water samples for rare earth element determinations

January 1, 2001

Standard reference water samples (SRWS) were collected from two mine sites, one near Ophir, CO, USA and the other near Redding, CA, USA. The samples were filtered, preserved, and analyzed for rare earth element (REE) concentrations (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) by inductively coupled plasma-mass spectrometry (ICP-MS). These two samples were acid mine waters with elevated concentrations of REEs (0.45–161 μg/l). Seventeen international laboratories participated in a ‘round-robin’ chemical analysis program, which made it possible to evaluate the data by robust statistical procedures that are insensitive to outliers. The resulting most probable values are reported. Ten to 15 of the participants also reported values for Ba, Y, and Sc. Field parameters, major ion, and other trace element concentrations, not subject to statistical evaluation, are provided.

Publication Year 2001
Title Standard reference water samples for rare earth element determinations
DOI 10.1016/S0883-2927(00)00030-5
Authors P. L. Verplanck, Ronald C. Antweiler, D. Kirk Nordstrom, Howard E. Taylor
Publication Type Article
Publication Subtype Journal Article
Series Title Applied Geochemistry
Index ID 70023771
Record Source USGS Publications Warehouse
USGS Organization Toxic Substances Hydrology Program