Perchloric Acid Digest
This digest technique is the (almost) classical perchloric acid digest of the sample. It provides a rigorous attack on the sample, however, refractory oxides and some minerals (eg Chromite, Cassiterite) are poorly attacked. Silicate minerals are not efficiently attacked. In a known environment, this digest procedure offers a cost effective approach for element profiling and is suitable for trace elements in soils, sediments and rocks. It must not be assumed to be a total digest of the sample. This digest is not intended for ore grade analyses because high levels of certain elements may require special treatments.
Detection Limits by ICP-OES (Method Code : ICP-101)
| Ag (1 ppm) |  Al (10 ppm) |
As (5 ppm) |
Cd (1 ppm) |
Co (5 ppm) |
| Cr (5 ppm) | Cu (1 ppm) |
Mn (1 ppm) |
Mo (2 ppm) |
Ni (1 ppm) |
| Pb (5 ppm) | V (2 ppm) |
Zn (1 ppm) |
Detection Limits by ICP-MS (Method Code : ICP-301)
| Ag (0.5 ppm) | As (0.5 ppm) |
Ba (1 ppm) |
Be (0.1 ppm) |
Bi (0.1 ppm) |
| Cd (0.5 ppm) | Co (1 ppm) |
Cu (1 ppm) |
Ga (0.2 ppm) |
Ge (2 ppm) |
| Hg (0.05 ppm) | Li (0.5 ppm) |
Mo (0.2 ppm) |
Ni (2 ppm) |
Pb (1 ppm) |
| Rb (0.02 ppm) | Sb (0.1 ppm) |
Sc (2 ppm) |
Se (1 ppm) |
Sr (0.1 ppm) |
| Te (0.2 ppm) | Tl (0.1 ppm) |
U (0.05 ppm) |
Zn (2 ppm) |