Laser ablation-inductively coupled plasma-dynamic reaction cell-mass spectrometry (LA-ICP-DRC-MS) for the determination of Pt, Pd and Rh in Pb buttons obtained by fire assay of platiniferous ores

Laser ablation-inductively coupled plasma-mass spectrometry using a double-focusing sector field mass spectrometer of Mattauch–Herzog geometry and an array detector for the determination of platinum group metals and gold in NiS buttons obtained by fire assay of platiniferous ores

“…2,13 It is however necessary to use suitable instrumentation and/or appropriate strategies to cope with spectral overlap. 3,[14][15][16] In this regard, previous results reporting on PGM determination in geological materials by means of NiS fire assay followed by LA-ICP-MS analysis have not always been successful. [17][18][19][20] A previous work from our research group showed promising performance for this type of application based on: (i) the grinding of the NiS buttons to achieve a more homogeneous material; (ii) the evaluation of different binding agents, leading to the final use of polyethylene wax; (iii) the use of line profiling ablation for the sampling of a representative portion of the button; and (iv) the use of the dynamic reaction cell pressurized with NH 3 to overcome spectral overlaps that hamper the accurate determination of several PGMs of medium mass (namely Rh, Pd and Ru, due to the formation of ArNi + and ArCu + ).…”

Determination of palladium, platinum and rhodium in used automobile catalysts and active pharmaceutical ingredients using high-resolution continuum source graphite furnace atomic absorption spectrometry and direct solid sample analysis

“…Such an approach permits to improve the sensitivity, considerably increases the sample throughput and reduces the risk of contamination/ losses. Thus, it is not surprising to see that different applications reporting on the determination of various PGMs by means of glow discharge mass spectrometry [8,9], laser ablation-ICP-MS [10][11][12][13][14] or optical emission spectrometry (OES) [15], electrothermal vaporization-ICP-MS [16,17], laser induced breakdown spectrometry [18,19] or X-ray fluorescence (XRF) [20][21][22] have been published. Obviously, only those techniques capable of providing a high sensitivity together with the maximum selectivity could be suited for this task.…”

Determination of metal ions in single wood fiber by LA-ICP-MS

“…There are many interrelations between these parameters, which additionally aggravate quantitative applications of LA-ICP-MS (Hoffmann et al 1997 ;Masters and Sharp 1997 ;Horn et al 2000 ;Pickhardt et al 2000 ;Russo et al 2002 ;Heinrich et al 2003 ;Vanhaecke et al 2004 ).…”