GB/T 12690.5-2003 "Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides--Determination of Al、Cr、Mn、Fe、Co、Ni、Cu、Zn、Pb content by inductively coupled plasma atomic emission spectrographic method--Determination of Co、Mn、Pb、N"

GB/T 12690.5-2003

Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides--Determination of Al、Cr、Mn、Fe、Co、Ni、Cu、Zn、Pb content by inductively coupled plasma atomic emission spectrographic method--Determination of Co、Mn、Pb、N

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GB/T 1 2690.5 - 2 003 is a standard for the chemical analysis of non-rare earth impurities in rare earth metals and their oxides. The standard provides two methods: Method 1 Determination of 9 impurities such as aluminum and chromium by Inductance coupled plasma emission light spectrum method; Method 2 Determination of 8 impurities such as cobalt and manganese by Inductance coupled plasma mass spectrometry. This standard provides scientific specifications for the accurate detection of impurities in rare earth products, helps to control the purity and mass of products, promotes the standardization of detection technology in the rare earth industry, and ensures the reliable application of products in various fields.

This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.