@article{oai:niigata-u.repo.nii.ac.jp:00006878, author = {Yuhara, Masaki and Hamamoto, Takuji and Kondo, Hiroko and Ikawa, Toshiyuki and Kagami, Hiroo and Shuto, Kenji}, journal = {Science reports of Niigata University. (Geology), Science reports of Niigata University. (Geology)}, month = {Mar}, note = {Rb, Sr, Sm and Nd concentrations of thirteen GSJ (Geological Survey of Japan), six KIGAM (Korea Institute of Geology, Mining and Materials) rock reference samples along with one reference rock sample, BCR-1 (provided by U. S. Geological Survey) have been measured by isotope dilution method using both MAT261 and MAT262 thermal ionization mass spectrometers in Niigata University. Both ^<87>Sr/^<86>Sr and ^<143>Nd/^<144>Nd ratios of JB-1b and KIGAM rock reference samples also have been measured. The measurements of three to fourteen separate analyses for each reference sample show excellent agreement with the reported values within small standard deviations. Rb, Sr, Sm and Nd concentrations of these rock reference samples are also in well agreement with the reported values. ^<87>Sr/^<86>Sr and ^<143>Nd/^<144>Nd ratios of JB-1b are 0.704098 ± 0.000012, 0.512786 ± 0.000010, respectively, and these ratios are identical with those of JB-1a.}, pages = {23--34}, title = {Rb, Sr, Sm and Nd concentrations of GSJ, KIGAM and BCR-1 rock reference samples analyzed by isotope dilution method}, volume = {15}, year = {2000} }