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TPO-1硫化物鐵精礦及尾礦成分分析標(biāo)準(zhǔn)物質(zhì)Iron Sulphide Concentrate and Tailings

Table 1 – Certified Values
Constituent Unit Mean Within-Lab Standard
Deviation Between- Labs Standard
Deviation 95% Confidence Limit
Co % 0.021 0.002 0.003 ± 0.002
Cu % 0.118 0.004 0.006 ± 0.003
Fe % 34.85 0.19 0.32 ± 0.16
Ni % 0.617 0.009 0.019 ± 0.010
S % 18.03 0.14 0.25 ± 0.14
SiO2 % 25.52 0.40 0.36 ± 0.20
Table 2 – Informational Values
Element Unit Mean
Al % 3.51
Ca % 2.17
Cr % 0.03
K % 0.56
Mg % 1.66
Mn % 0.08
Na % 0.85
P % 0.03
Pb % 0.02
Ti % 0.35
Zn % 0.02
Description
TPO-1 is a mixture of iron sulphide concentrate and tailings from the Clarabelle Mill that was originally prepared as a custom certified reference material for Inco Limited, Copper Cliff, Ontario, Canada in 1998. Inco agreed to donate some of the custom certified reference material to Natural Resources Canada.
The raw material was dried at 60°C for 30 hours, crushed, sieved, and blended to obtain a minus 150 micron (100 mesh) product. The yield was 86%. The material comes in glass bottles containing 25-30g each. This is the only size available. Each bottle was sealed under nitrogen in a laminated aluminum foil-mylar pouch to prevent oxidation.
Intended use
TPO-1 is suitable for the analysis of elements at major, minor and trace levels. Examples of intended use are for quality control in the analysis of samples of a similar type, method development, arbitration and the calibration of equipment.
Instructions for use
The assigned values pertain to the date when issued. TPO-1 should be used “as is”, without drying. The contents of the bottle should be thoroughly mixed before taking samples. The contents of the bottle should be exposed to air for the shortest possible time. After opening the sealed pouch, the bottle should be kept in a desiccator, or preferably, resealed under nitrogen in a new heat-sealed laminated foil pouch to prevent oxidation.
Hazardous situation
Normal safety precautions such as the use of safety glasses, breathing protection for fine particulate matter, gloves and a laboratory coat are suggested.
Level of homogeneity
The homogeneity of the stock with respect to its copper, nickel and sulphur was investigated using twenty-two bottles chosen according to the bottling sequence and a stratified random sampling scheme. Two splits were analysed from each bottle. The analyses for copper, nickel and sulphur were performed. The method used for the analysis of copper and nickel was digestion of a 0.5g-sample with hydrochloric, nitric, hydrofluoric and perchloric acids followed by determination by atomic absorption spectroscopy. The method for the analysis of sulphur was combustion on a 0.5 g sample using a combustion apparatus with infrared detection.