| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
|---|
| <10 | OES |
1990.04 | Personal communication, Geological Survey of India | | | | B.G.Rao |
| <2 | OES |
1990.05 | Personal Communication, U.S. Geological Survey, Lakewood | | | | J.S.Kane, J.G.Crock, P.H.Briggs and D.L.Fey |
| <2 | ICPES |
1990.05 | Personal Communication, U.S. Geological Survey, Reston | | | | J.S.Kane |
| 1.55 | ICPMS |
1993.04 | Simultaneous determination of thirty-seven trace elements in twenty-eight international rock standards by ICP-MS | Geost. Newsletter | 17 | 81-97 | CD.Garbe-Schonberg |
| 1.73 | AA |
1996 | Determination of molybdenum in fifty three geochemical reference materials by flameless atomic absorption spectrometry | Geostamdards Newsletter | 21 | 93-96 | S.Terashima |
| 1 | XRF |
1996 | Personal communication,Bremen Univ., Germany | | | | M.Zuther |
| 1.6 | AA |
1997 | Personal Communication,SKK,Japan | | | | |
| 〈 1 | ICPES |
1999 | Personal Communication, Chemex, Canada | | | | Chemex |