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Zhujkov, B.L.; Popeko, G.S.; Fan Tkhu Khyong.
Joint Inst. for Nuclear Research, Dubna (USSR). Lab. of Nuclear Reactions1985
Joint Inst. for Nuclear Research, Dubna (USSR). Lab. of Nuclear Reactions1985
AbstractAbstract
[en] In order to increase the sensitivity of noble metal analysis a possibility to concentrate Pt, Ir and Au from some geological samples (chromites and sulfide ores) by sublimation in air stream at the temperature up to 1200 deg C was studied. The effect of some experimental conditions and additions of solid reagents on sublimation yield has been investigated. For separation of Pt, Ir, and Au from some volatile interfering elements ''chemical filters'' such as CaO, MgO, Al2O3, and Nb2O5 were used. For concentrates obtained from samples up to 5g in weight the following detection limits have been achieved using various analysis methods: neutron-activation analysis Pt 10-50 ng, Ir 0.1-1 ng, Au 0.01-0.1 ng; X-ray fluorescence analysis 0.2-1 μg; mass-spectrometric analysis 4-40 ng
Original Title
Vydelenie Pt, Ir i Au iz prirodnykh obraztsov vozgonkoj v toke vozdukha i novye vozmozhnosti analiza blagorodnykh ehlementov
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1985; 19 p; 32 refs.; 5 figs.; 3 tabs.; submitted to the journal J. Anal. Chem.
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Report
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