OREAS 739
SKU: 739
OREAS 739 is a smelter-grade alumina (SGA), certified reference material
(CRM) prepared from three alumina products blended in equal proportions. The
materials were sourced from Alcoa and Worsley Alumina in Western Australia, and
Rio Tinto in Queensland (Australia). OREAS 739 was developed in collaboration
with Alumina Quality Workshop Inc. and is typical of SGA produced in Australia
and similar to globally produced SGA. Sixteen commercial analytical laboratories
participated in the program to certify the following:
Al2O3, CaO, Cr2O3, Fe2O3, K2O, MgO, MnO, Na2O, P2O5, SiO2, SrO, TiO2,
V2O5, and ZrO2 by lithium borate fusion with XRF;
BaO, BeO, Ga2O3, Sn, SrO, U, V2O5, W, ZnO and ZrO2 by borate fusion with
ICP-OES/MS finish;
MOI (moisture) at 300°C and LOI (loss on ignition) at 1000°C on the ‘as
received’ sample by TGA as per AS2879.1-2000.
Specifications
- State: oxide
- Matrix: concentrate
- Mineralisation: gamma alumina
- CRM Group: Concentrates, Alumina
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| Al2O3, Aluminium(III) oxide (wt.%) | 98.60 | 0.326 | 98.37 | 98.84 | Borate Fusion XRF |
| CaO, Calcium oxide (wt.%) | 0.031 | 0.003 | 0.029 | 0.033 | Borate Fusion XRF |
| Cr2O3, Chromium(III) oxide (ppm) | 2.58 | 1.51 | 1.32 | 3.84 | Borate Fusion XRF |
| Fe2O3, Iron(III) oxide (wt.%) | 0.009 | 0.001 | 0.008 | 0.010 | Borate Fusion XRF |
| K2O, Potassium oxide (wt.%) | < 0.010 | IND | IND | IND | Borate Fusion XRF |
| MgO, Magnesium oxide (wt.%) | < 0.010 | IND | IND | IND | Borate Fusion XRF |
| MnO, Manganese oxide (ppm) | 3.60 | 3.19 | 0.00 | 11.81 | Borate Fusion XRF |
| Na2O, Sodium oxide (wt.%) | 0.395 | 0.012 | 0.386 | 0.404 | Borate Fusion XRF |
| P2O5, Phosphorus(V) oxide (wt.%) | 0.001 | 0.000 | 0.001 | 0.001 | Borate Fusion XRF |
| SiO2, Silicon dioxide (wt.%) | 0.012 | 0.001 | 0.010 | 0.013 | Borate Fusion XRF |
| SrO, Strontium oxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| TiO2, Titanium dioxide (wt.%) | 0.003 | 0.001 | 0.003 | 0.004 | Borate Fusion XRF |
| V2O5, Vanadium(V) oxide (ppm) | < 10.0 | IND | IND | IND | Borate Fusion XRF |
| ZrO2, Zirconium dioxide (ppm) | < 100 | IND | IND | IND | Borate Fusion XRF |
| BaO, Barium oxide (ppm) | < 1.00 | IND | IND | IND | Borate Fusion ICP |
| BeO, Beryllium oxide (ppm) | 2.77 | 0.51 | 2.21 | 3.33 | Borate Fusion ICP |
| Dy, Dysprosium (ppm) | < 0.050 | IND | IND | IND | Borate Fusion ICP |
| Er, Erbium (ppm) | < 0.030 | IND | IND | IND | Borate Fusion ICP |
| Eu, Europium (ppm) | < 0.020 | IND | IND | IND | Borate Fusion ICP |
| Ga2O3, Gallium(III) oxide (ppm) | 68 | 3.0 | 65 | 71 | Borate Fusion ICP |
| Gd, Gadolinium (ppm) | < 0.050 | IND | IND | IND | Borate Fusion ICP |
| Lu, Lutetium (ppm) | < 0.010 | IND | IND | IND | Borate Fusion ICP |
| Nd, Neodymium (ppm) | < 0.10 | IND | IND | IND | Borate Fusion ICP |
| Pr, Praseodymium (ppm) | < 0.020 | IND | IND | IND | Borate Fusion ICP |
| Rb, Rubidium (ppm) | < 0.20 | IND | IND | IND | Borate Fusion ICP |
| Sm, Samarium (ppm) | < 0.050 | IND | IND | IND | Borate Fusion ICP |
| Sn, Tin (ppm) | 1.03 | 0.35 | 0.79 | 1.27 | Borate Fusion ICP |
| SrO, Strontium oxide (ppm) | 3.85 | 0.70 | 3.04 | 4.65 | Borate Fusion ICP |
| Ta, Tantalum (ppm) | < 0.10 | IND | IND | IND | Borate Fusion ICP |
| Tb, Terbium (ppm) | < 0.010 | IND | IND | IND | Borate Fusion ICP |
| Tm, Thulium (ppm) | < 0.010 | IND | IND | IND | Borate Fusion ICP |
| U, Uranium (ppm) | 0.30 | 0.05 | 0.27 | 0.34 | Borate Fusion ICP |
| V2O5, Vanadium(V) oxide (ppm) | 12.8 | 3.9 | 9.7 | 15.8 | Borate Fusion ICP |
| W, Tungsten (ppm) | 0.84 | 0.30 | 0.57 | 1.10 | Borate Fusion ICP |
| Y, Yttrium (ppm) | < 0.10 | IND | IND | IND | Borate Fusion ICP |
| Yb, Ytterbium (ppm) | < 0.030 | IND | IND | IND | Borate Fusion ICP |
| ZnO, Zinc oxide (ppm) | 69 | 4.8 | 55 | 82 | Borate Fusion ICP |
| ZrO2, Zirconium dioxide (ppm) | 1.82 | 0.81 | 0.92 | 2.73 | Borate Fusion ICP |
| LOI300-1000, Loss on ignition 300°C to 1000 °C (wt.%) | 1.03 | 0.056 | 0.99 | 1.07 | Thermogravimetry |
| MOI300, Moisture @300°C (wt.%) | 4.65 | 1.11 | 3.66 | 5.63 | Thermogravimetry |
Product Specifications
Certified Reference Values
| Analyte | Certified Value | Uncertainty (1SD) | 95% Confidence Low | 95% Confidence High | Method |
|---|
SD = Standard Deviation | CL = 95% Confidence Limits
Methods: AR = Aqua Regia, 4-Acid = 4-Acid Digestion, LBF = Lithium Borate Fusion, FA/AAS = Fire Assay with Atomic Absorption, LECO = LECO Combustion Analysis
Need Assistance?
Contact our technical team for custom orders, bulk pricing, or analytical support.
Contact Us