GB/T 12690.5-1990Praseodymium oxide--Determination of lanthanum oxide, cerium oxide, neodymium oxide, samarium oxide and yttrium oxide contents--X ray fluorescence spectrometric method (English PDF)
GB/T 12690.5 | Evolution and historical versions
| Std ID | Title | Status |
|---|---|---|
| GB/T 12690.5-2017 | Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides - Part 5: Determination of cobalt, manganese, lead, nickel, copper, zinc, aluminum, chromium, magnesium, cadmium, vanadium and iron contents | Valid |
| 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 and Determination of Co, Mn, P | Obsolete |
| GB/T 12690.5-1990 | Praseodymium oxide--Determination of lanthanum oxide, cerium oxide, neodymium oxide, samarium oxide and yttrium oxide contents--X ray fluorescence spectrometric method | Obsolete |
GB/T 12690.5-1990 is obsolete. It has been replaced by GB/T 12690.5-2003. This page sells the obsolete edition, for projects and contracts that still cite it.
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Level / Type
National · Recommended
Scope
GB/T 12690.5-1990 (Praseodymium oxide--Determination of lanthanum oxide, cerium oxide, neodymium oxide, samarium oxide and yttrium oxide contents--X ray fluorescence spectrometric method) is available as an English-translated PDF.
GB/T 12690.5-1990 is the Chinese national standard "Praseodymium oxide--Determination of lanthanum oxide, cerium oxide, neodymium oxide, samarium oxide and yttrium oxide contents--X ray fluorescence spectrometric method". It is obsolete: it has been replaced by GB/T 12690.5-2003.
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Document preview — GB/T 12690.5-1990
Contents
- Document data
1 Document data
Sector: National standard (Recommended).
Status: obsolete, replaced by GB/T 12690.5-2003.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.
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Related Standards
GB/T 12690.6-2017 — Chemical analysis methods for non-rare earth impurity of rare earth metals and their oxides - Part 6: Determination of iron content - Kslium thiocyanate, 1,10-Phenanthroline spectrophotometric method
GB/T 12690.4-1990 — Cerium oxide--Determination of lanthanum oxide, praseodymium oxide, neodymium oxide, samarium oxide and yttrium oxide contents--Spectrochemical method
GB/T 12690.6-2003 — Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides - Determination of iron content - Kalium thiocyanate, 1, 10-phenanthroline spectrophotometric method
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GB/T 12690.5-1990
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