| value | technique | year | title_of_literature<MAX120col.> | journal<MAX120col.> | vol | page | name<MAX80col.> |
|---|---|---|---|---|---|---|---|
| <0.1 | AA | 1998 | Personal communication,SKK,Japan | ||||
| 0.04 | ICPMS | 1998 | Personal communcation,Universite de Liege,Belgium | I.Roelandts | |||
| <2 | EXRF | 2002 | Personal Communication, Southern Connecticut State Univ., USA | T. Fleming |