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Professional Standard Category: National Standard |
Category No.: | GB | Valid Status: | superseded |
Issued Organization: | Issued Date: | 1990-01-02 | |
Implemented Date: | 1992-1-1 | Abolished Date: | |
Superseded Standard.: | GB/T 12690.5-2003 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides Determination of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、Ni |
Superseded Date: |
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