| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
| 0.04 | FAA |
1988.04 | Determination of gold in sixty geochemical reference samples by flameless atomic absorption spectrometry | Geost. Newsletter | 12 | 57-60 | S.Terashima |
| <0.27 | INAA |
1989.03 | Personal communication, Musashi Institute of Technology, Japan | | | | S.Hirai and S.Suzuki |
| <0.2 | FAA |
1990.1 | Gold, palladium and tellurium in South African, Chinese and Japanese geological reference samples | Geost. Newsletter | 14 | 477-478 | E.Kontas, H.Niskavaara and J.Virtasalo |
| 0.09 | FAA |
1991.07 | Personal communication, Geological Survey of Japan | | | | S.Terashima |
| 0.4 | INAA |
1992.1 | Personal Commuication,Research Reactor Inst., Kyoto University, Japan | | | | T.Takeuchi |