1 Scope
This standard specifies the determination method of the content of silicon dioxide, ferric oxide, sodium oxide, potassium oxide, copper oxide, magnesium oxide, calcium oxide, chromic oxide, vanadium pentoxide, zinc oxide, titanium dioxide, manganese oxide and gallium sesquioxide in alumina.
This standard is applicable to the determination method of the content of silicon dioxide, ferric oxide, sodium oxide, potassium oxide, copper oxide, magnesium oxide, calcium oxide, chromic oxide, vanadium pentoxide, zinc oxide, titanium dioxide, manganese oxide and gallium sesquioxide in alumina. The determination scope is detailed in Table 1.
Table 1
Impurity Determination scope /% Impurity Determination scope /%
Silicon dioxide 0.005~0.30 Chromic oxide 0.0003~0.10
Ferric oxide 0.005~0.30 Vanadium pentoxide 0.0002~0.10
Sodium oxide 0.01~1.30 Zinc oxide 0.0004~0.10
Potassium oxide 0.004~0.30 Titanium dioxide 0.0005~0.10
Copper oxide 0.0005~0.10 Manganese oxide 0.0003~0.10
Magnesium oxide 0.0005~0.10 Gallium sesquioxide 0.001~0.10
Calcium oxide 0.005~0.30 — —
2 Normative Reference
The following normative document contains provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding amending error in the text), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of the normative document is applicable. For undated references, the latest edition of the normative document applies.
GB/T 602—2002 Chemical reagent--Preparations of standard solutions for impurity(ISO 6353—1:1982 NEQ).
3 Method Principle
Under the action of microwave digestion apparatus, the specimen digested by sulfuric acid in high pressure and high temperature, induct the test solution into argon plasma, under the selected optimum operation condition, use inductively coupled plasma spectrometer to determine, and calibrate the matrix influence on the determination in matrix matching method.
