| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
| 1.21 | AA |
1998 | Preparation of two new GSJ geochemical reference materials; basalt JB-1b and coal fly ash JCFA-1. | Geostandards Newsletter | 22 | 113-117 | S.Terashima, M.Taniguchi, M.Mikoshiba and N.Imai |
| 0.708 | ICPMS |
1997 | Personal communication,Koberuko Co., Japan | | | | Someya |
| 0.79 | ICPMS |
1994 | Personal Communication,WSU GeoAnalytical Laboratory, USA | | | | C. Knaack, S. Cornelius and P. Hooper |
| 0.79 | ICPMS |
2000 | Personarl Communication,Washington State University | | | | D. Johnson |
| <5 | EXRF |
2002 | Personal Communication, Southern Connecticut State Univ., USA | | | | T. Fleming |