GB/T 23275-2009Methods for chemical analysis of ruthenium determination of lead, iron, nickel, aluminum, copper, silver, gold, platinum, palladium, rhodium, iridium and silicon in ruthenium powder by glow discharge mass spectrometry (English PDF)

1 Scope

This Standard specifies the method for the determination of lead, iron, nickel, aluminum, copper, silver, gold, platinum, palladium, rhodium, iridium and silicon in ruthenium powder.

This Standard applies to the determination of lead, iron, nickel, aluminum, copper, silver, gold, platinum, palladium, rhodium, iridium and silicon in ruthenium powder, of which the determination ranges are shown in Table 1.

2 Method summary

Prepare the sample by powder-pressing method. Use the sample as the cathode of the glow discharge power supply. The atoms of the sample (cathode) are peeled off from the sample under the impact of argon ions (cathode sputtering), enter the plasma, and become positive ions by electron collision and Penning collision. Positive ions are accelerated through the outlet of the ion source and then enter the mass spectrometer, which analyzes according to the charge-to-mass ratio and ion intensity.

3 Reagents and materials

4 Instruments

5 Sample preparation

Use absolute ethanol (3.1) to wash and air-dry the part in contact with the sample in the steel ring of the tablet-producing mold of the pressing machine in advance; then, weigh

5 g ~ 10 g of the sample and place it in the steel ring of the tablet-producing mold; start the pressing machine, and press at a pressure of 15 MPa for at least 3 min; take out the tablet.

6 Analysis steps

Load the sample into the sample holder on the glow discharge mass spectrometer; adopt an appropriate instrument working condition, to carry out sample pre-sputtering first;

perform sample analysis after the signal of the element to be measured is stabilized. […]