A method was developed for ultra-trace determination of all six platinum group elements (PGE) by inductively coupled plasma-mass spectrometry (ICP-MS).With involvement of Fe to the fusion charge compositions of the conventional NiS fire assay, a whole assay button in water may disintegrate into powder and then be dissolved with HCl. The insoluble …

An example of how the typical U-shaped profile of the substitutional platinum concentration is obtained from one-sided diffusion during annealing at 800 C (simulations). ... The complexes and pre ...

The concentration of platinum-group elements (PGE) was determined using ICP-MS in combination with nickel sulphide fire assay pre-concentrations ( Plessen and Erzinger, 1998) that provides high ...

Ashing was applied as a pre-concentration method for Pt content in biological material (e.g. Schäfer et al., 1998). ... Platinum concentrations in estuaries can both derive from natural sources including rock leaching and weathering (Upper Continental Crust Pt content of 2.6 pmol.g −1; ...

Spent automobile catalysts are the most important secondary source of platinum group metals (PGMs). However, effective recovery of PGMs from catalyst scraps is difficult because they are present in only small quantities as chemically stable substances. In this study, in order to improve the efficiency of the existing recycling …

Optimization of furnace temperature program is necessary for the determination of platinum using ETAAS. Hence, the effect of pyrolysis and atomization temperatures on the absorbance signal of 10 ng mL −1 of platinum before and after pre-concentration using the proposed VC-CPE was studied and these results are shown in …

See the Platinum price per ounce & Platinum price per gram to understand your purchasing power. ... Pre-1933 U.S. Gold Coins. How Much Your Platinum is Worth. Enter your amounts. Spot Price. ... The concentration of most of the world's platinum in one small region creates risk. In 2023, South Africa experienced serious electrical grid ...

Fire assay is a classical method used for the separation of platinum group elements and gold (PGE + Au) by pre-concentration with a collector. In the nickel sulphide fire assay, nickel and sulphur are used for the collection of PGE + Au. We have successfully reduced the mass of the collectors used without affecting element recovery.

Platinum was recovered from the leaching solution by conventional precipitation technique, and the platinum obtained by each process was analyzed chemically. It was found that 94% of the platinum ...

Abstract. An investigation into the optimisation of a highly-concentrated (20 wt%) and stable platinum (Pt) organometallic ink, showing consistent jetting performance whilst minimising the negatives associated with particle-containing inks. The ink was synthesised and demonstrated onto glass by a piezoelectric drop-on-demand …

Fig. 3(c), the results from Fig. 3(a) and (b) are correlated in the form of a roughness factor versus platinum-loading plot. Again, a non-linear relationship is evident and there is a relatively ...

Platinum group metals (PGMs) are considered critical raw materials, thus their recycling and re-use is of outmost importance. Among the PGMs, platinum (Pt), palladium (Pd) and rhodium (Rh) are the basic metals used in catalytic converters. ... pretreatments, such as reduction or pre-concentration, have been avoided in this novel …

On the whole, there is an increase in the concentration index for precious metals: enrichment with respect to platinum metals reaches a factor of 5 with an output of concentrate of 20%. The introduction of known flotation regulators ([CuSO 4 ] = 50 g/ton and [Na 2 CO 3 ] = 500 g/ton) made it possible in a single stage to extract into an ...

Mining and plant disciplines can benefit from pre-concentration of UG2 platinum ores in a dense medium separation (DMS) plant. The main benefit of DMS is the selective discard of waste from the feed stream, thus improving project economics while reducing the power and water requirements for processing. On the mining side, with the correct combination of …

A method was developed for ultra-trace determination of all six platinum group elements (PGE) by inductively coupled plasma-mass spectrometry (ICP-MS). With involvement of Fe to the fusion charge compositions of the conventional NiS fire assay, a whole assay button in water may disintegrate into pow …

Determination of the Platinum‐Group Elements and Gold in Twenty Rock Reference Materials by Inductively Coupled Plasma‐Mass Spectrometry (ICP‐MS) after …

We report on the use of mesoporous silica microparticles (μPs) functionalized with quarternary amino groups for the isolation of platinum and palladium tetrachloro complexes from aqueous road dust digests. The μPs have a size ranging from 450 to 850 nm and are suspended directly in the aqueous digests, upon which the …

Pre-concentration of precious metal and base metal ore types is becoming more relevant with the discovery, development and operation of many lower grade deposits around the world. The fluctuations in metal prices expose many mines to risks especially dealing with low and variable ore grades. Pre-concentration, the process of concentrating the …

Platinum. Article. Pre-concentration and Determination of Platinum (IV) in Water Samples Using Chelating Resin by Inductively Coupled Plasma Atomic Emission …

Platinum. Article PDF Available. Pre-concentration and Determination of Platinum (IV) in Water Samples Using Chelating Resin by Inductively Coupled Plasma …

Strong anionic exchangers find wide applications in the sample pre-treatment for separation and concentration of platinum metals [7], [16], [17], [18]. Regarding the exclusively low concentrations of platinum and palladium in the environmental samples (ng/g, pg/g) the anionic exchangers appear to be preferable to the cationic exchange …

Whilst dense medium separation is best known for its ability to concentrate diamond and coal deposits, the process is now being employed in southern Africa as a pre-concentration step to improve the economics of platinum group metal and nickel ores. DMS plants built for these industries (such as the 1600tph unit at Tati Nickel, Botswana), …

To use more common and more affordable techniques, a preconcentration step is necessary to increase their concentration to a measurable value. An overview of the application of preconcentration techniques and an overview of the current …

Pt and Pd concentrations in samples collected in summer and in winter were compared, with concentrations ranging from 205 to 1445 ng g-1 for Pt and from 201 to 1230 ng g-1 for Pd. Graphical AbstractMesoporous silica microparticles (μPs) functionalized with quarternary amino groups were used for isolating platinum and palladium from aqueous ...

Cisplatin is a medication used to manage and treat solid tumors and hematologic malignancies. It is in the alkylating agent class of cytotoxic medications. This activity reviews the indications, action, and contraindications for cisplatinum as a valuable agent in treating malignancy. This activity will highlight the mechanism of action, adverse …

On the mining side, with the correct combination of variables, implementing DMS as a pre-concentration step can reduce cut-off grades and, as a result, increase ore reserves. ... Jones, L., and Lawrence, S.R. Pre-concentration of platinum group and base metal ores by dense medium separation. Advances in Mineral Processing Science and Technology

Platinum group elements (PGE) and Au data in polymetallic oceanic ferromanganese nodule reference samples and crust samples obtained by inductively coupled plasma mass spectrometry (ICP-MS), after separation and pre-concentration by nickel sulfide fire-assay and Te coprecipitation, are presented. By optimizing several …

Accepted 12 May 2012. ABSTRACT: A chelating resin is prepared by condensation polymerization of aniline with formaldehyde and characterized by FT-IR, elemental …

Qhush Platinum Black Pre-Workout. 0 out of 5 star rating. 0 Reviews. The new flagship pre-workout to fuel your greatness. Break through plateaus, train harder for longer and achieve peak strength while maintaining the ultimate concentration levels. R 499.00. Size. Flavour. Add to cart.

Precise and accurate quantification of Ag and platinum group elements in marine, estuarine and riverine waters is challenging due to the complex matrices and ultra-low concentrations in the pmol kg − 1 and fmol kg − 1 range. A methodological approach has been developed for the analysis of Ag and Pt in seawater based on the extraction of …