GB/T 15072.7-2008 《Test methods of precious metal alloys - Determination of chromium and iron contents for gold alloys - Inductively coupled plasma atomic emission spectrometry》 Related products

This standard specifies methods for the determination of chromium and iron content in gold alloys by Inductance Coupled Plasma Atomic Emission Spectroscopy (AES) (ICP-AES). It is suitable for alloys such as AuNiCr, AuFeCr and AuNiFeZr. The determination range is 0.5% to 7% of the mass fraction of chromium and iron. The methods include acid dissolving of the sample, separation of gold, and determination of the emission intensity of chromium and iron at specific wavelengths. The standard provides reliable analytical means for the determination of chromium and iron in gold alloys, ensuring the quality control of the alloy material.