| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
|---|---|---|---|---|---|---|---|
| 0.39 | NAA | 1980 | Determination of seven noble metals in standard rock samples by means of thermal neutron activation analysis | Radioisotopes | 29 | 8-12 | M.Ayabe, Y. Hirao and K. Kimura |
| 0.4 | NAA | 1988.09 | The noble metals in GSJ rock reference samples(Abst.,in Japanese) | 32nd Symp. Radiochem. | 174-175 | K.Arai, Y.Saito and K.Kimura | |
| 0.36 | INAA | 1989.04 | Personal communication, Aoyama Gakuin University, Japan | K.Kimura and K.Arai |