Determination of iridium in mafic rocks by atomic absorption
Talanta
By: F. S. Grimaldi and M. M. Schnepfe
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Abstract
Iridium is determined in mineralized mafic rocks by atomic absorption after fire-assay concentration into a gold bead. Interelement interferences in the atomic-absorption determination are removed and Ir sensitivity is increased by buffering the solutions with a mixture of copper and sodium sulphates. Substantial amounts of Ag, Al, Au, Bi, Ca, Cd, Co, Cr, Fe, Ho, Hg, K, La, Mg, Mn, Mo, Ni, Pb, Te, Ti, V, Y, Zn and platinum metals can be tolerated in the atomic-absorption determination. The sensitivity and detection limits are 3.2 and 0.25 ppm of Ir, respectively.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Determination of iridium in mafic rocks by atomic absorption |
| Series title | Talanta |
| DOI | 10.1016/0039-9140(70)80010-8 |
| Volume | 17 |
| Issue | 7 |
| Year Published | 1970 |
| Language | English |
| Publisher | Elsevier |
| Description | 5 p. |
| First page | 617 |
| Last page | 621 |
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