Flameless Atomic Absorption Determination of Platinum, Palladium, and Rhodium in Geologic Materials

Abstract

Platinum, palladium and rhodium have been determined in 18 U.S. Geological Survey reference materials by graphite furnace atomic absorption spectrometry after preconcentration by the classical leadfree assay technique. A comparison with literature values shows clearly the need for additional data on these samples before “best” values can be assigned.

Gold in BHVO‐1, BIR‐1, DNC‐1 and BCR‐1 by Fire‐Assay Preconcentration Neutron Activation Analysis: Sample Size vs. Accuracy

“…It was possible to determine Pt in only two sample portions of DNC-1. The average value for Pt of 46 * 2 ppb (one standard deviation) is almost twice that of Aruscavage et al (18), who report 25.8 f 1.6 ppb (one standard deviation) for five determinations. Unfortunately, this low level is close to the detection limit for Pt at the 10 g sample size (22 f 27 ppb) and these determinations are relatively imprecise.…”

Determination of Platinum‐Group Elements and Gold in Ferromanganese Nodule Reference Samples

“…Palladium measurement results are in agreement of the value reported by Aruscavage et al . () for both samples. Also Pd mass fraction for NOD‐P‐1 coincides with the data of Baker and Krogh Jensen ().…”

“…Previously, for PGE and gold determination in these reference samples, the following methods were applied: flameless atomic absorption analysis after fire assay preconcentration (Chowdhury and Pal , Aruscavage et al . ), ICP‐MS analysis following NiS‐fire assay preconcentration (Balaram et al . ), ID‐ICP‐MS analyses after anion exchange PGE separation (Baker and Krogh Jensen ), sector field inductively coupled plasma‐mass spectrometry (ICP‐SF‐MS) without pre‐concentration (Axelsson et al .…”

Determination of Trace Gold and Palladium in Geological Samples by Atomic Absorption Spectrometry with Separation and Enrichment of Chromeayurol-s Chelate Forming Resin

“…Various traditional preconcentration procedures are available, including fire assay (1,2), solvent extraction (3,4), and column ion-exchange (5,6) techniques. Determinative end-points include flame and graphite furnace atomic absorption spectrometry (7)(8)(9).…”