GB/T 1420-2015Sponge palladium (English PDF)

Foreword

This standard is in accordance with GB/T 1.1-2009 given rules drafted.

This standard replaces GB/T 1420-2004 "palladium sponge." This standard compared with the original standard, the main technical changes are as follows.

--- Modify palladium sponge Grades SM-Pd99.95 in Pb content of impurity elements from the 0.005% to 0.003%;

--- Deleting non-essential measure impurity element calcium requirements (see Table 1 edition 2004);

--- Palladium sponge products increase the amount of the allowable range of ignition loss (see 3.2.3);

--- Increasing the SM-Pd99.99, SM-Pd99.95, measuring SM-Pd99.9 in Cr, Bi, Sn and Ru impurity elements determined Determination of impurity elements in the wavelength range and inductively coupled plasma atomic emission spectrometry. While determining SM-Pd99.99, SM-Pd99.95 impurity elements can also be measured with reference to YS/T 362 (see 4.1);

Determination of impurity elements in palladium --- deleting the original standard Appendix A ordinary emission spectrometry;

--- Increasing the hydrogen reduction method for the determination palladium sponge weight loss on ignition requirements (see Appendix B).

1 Scope

This standard specifies the requirements for palladium sponge, test methods, inspection rules, marking, packaging, transportation, storage, quality certificate and purchase order (or contract details.

This standard applies to palladium sponge products.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.

Emission spectroscopy YS/T 362 pure palladium impurity element

3 Requirements