| 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. ?? 1970. |
| Genre: | Article |
| ProdID: | 70010240 |
| Citation Author: | Grimaldi, F. S.; Schnepfe, M. M. |
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| Citation End Page: | 621 |
| Citation Issue: | 7 |
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| Citation Language: | English |
| Citation Larger Work Title: | Talanta |
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| Citation Number Of Pages: | 5 |
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| Citation Search Results Text: | Determination of iridium in mafic rocks by atomic absorption; 1970; Article; Journal; Talanta; Grimaldi, F. S.; Schnepfe, M. M. |
| Citation Start Page: | 617 |
| Citation Volume: | 17 |
| Citation Year: | 1970 |
| Type: | citation/reference |
| Text: | Determination of iridium in mafic rocks by atomic absorption; 1970; Article; Journal; Talanta; Grimaldi, F. S.; Schnepfe, M. M. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Thu, 1 Jan 1970 00:00 -0600 |
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