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PTC-1b貴金屬銅鎳精礦成分分析標(biāo)準(zhǔn)物質(zhì)Noble-Metals-Bearing Copper-Nickel Concentrate

Table 1 – PTC-1b Certified Values
Analyte Units Mean Within-lab Standard Deviation Between-labs Standard Deviation 95% Confidence Interval of Mean
Ag μg/g 53.1 1.6 2.2 1.0
As μg/g 222 8 29 17
Au a μg/g 1.99 0.11 0.18 0.12
Co % 0.3253 0.0055 0.0082 0.0038
Cu classical b % 7.919 0.025 0.056 0.033
Cu instrumental c % 7.97 0.09 0.17 0.07
Fe % 36.78 0.45 0.67 0.28
moisture d % 0.81 0.03 0.10 0.07
Mg no AD2,3 e % 0.441 0.008 0.027 0.014
Ni classical f % 11.256 0.036 0.092 0.059
Ni instrumental c % 11.29 0.16 0.21 0.10
Pb % 0.0795 0.0014 0.0029 0.0015
Pd a μg/g 9.46 0.24 0.25 0.20
Pt a μg/g 6.47 0.24 0.44 0.29
S g % 29.95 0.24 0.64 0.27
Si h % 2.468 0.055 0.065 0.044
Zn % 0.2083 0.0044 0.0063 0.0038
Most sets involve some type of fire assay pre-concentration.
The data includes sets using titration and electrogravimetric methods.
The data includes sets using instrumental techniques such as atomic absorption spectrometry, inductively coupled plasma - optical emission spectrometry, inductively coupled plasma – mass spectrometry, X-ray fluorescence, and, for copper only, instrumental neutron activation analysis.
Samples of 1 to 10 grams were dried for 1 to 60 hours at 100 to 110°C.
Sets using digestion by two acids (hydrochloric and nitric) or three acids (hydrochloric, nitric and hydrofluoric) were excluded as method outliers based on statistical tests.
The data includes sets using titration, electrogravimetric and dimethylglyoxime methods.
Digestion using four acids (hydrochloric, nitric, hydrofluoric and perchloric), various fusion and combustion methods were used.
All sets used a fusion for the preparation.
Table 2 – PTC-1b Provisional Values
Analyte Units Mean Within-lab Standard Deviation Between-labs Standard Deviation 95% Confidence Interval of Mean
Al a % 0.7518 0.0059 0.0059 0.0048
Ba a, b μg/g 61.5 2.0 2.0 2.3
Ca c % 0.571 0.017 0.083 0.044
Mn no AD2, 3 d % 0.0193 0.0003 0.0021 0.0018
 loss on ignition e % 13.44 0.13 0.49 0.38
Se a, b μg/g 120 4 10 11
Ti a % 0.0696 0.0023 0.0047 0.0041
Digestion using four acids (hydrochloric, nitric, hydrofluoric and perchloric), fusions and instrumental neutron activation analysis were used.
Statistical analysis of the data warrants classification as provisional despite only  6 sets of data.
The only set using digestion by two acids (hydrochloric and nitric) was excluded as a statistical outlier.
Sets using digestion by two acids or three acids (hydrochloric, nitric and hydrofluoric) were excluded as method outliers based on statistical tests.
Samples of 0.5 to 2 grams were ignited for 1 to 30 hours at 1000 to 1050°C.
Table 3 – PTC-1b Informational Values (semi-quantitative only)
Element Units Mean No. accepted laboratories / values
Cd μg/g 38 7 / 29
Cr a % 0.004 6 / 30
Ir μg/g 0.2 3 / 15
K b % 0.15 5 / 23
Mo c μg/g 11 4 / 16
Na b % 0.17 6 / 28
Rh d μg/g 0.5 3 / 15
Sb b μg/g 6 3 / 11
Sn b μg/g 120 3 / 13
Sr b μg/g 30 4 / 14
Te b μg/g 30 3 / 11
V b μg/g 20 4 / 18
Y b μg/g 3 3 / 11
Microwave digestion with two acids (hydrochloric and nitric), digestion with four acids (hydrochloric, nitric, hydrofluoric and perchloric) and instrumental neutron activation analysis were used.
Digestion using four acids, fusions and instrumental neutron activation analysis were used.
Digestion with three (hydrochloric, nitric and hydrofluoric) or four acids and fusion were used.
Fire assay pre-concentration was used for all sets.
Source
PTC-1b is a nickel-copper sulphide concentrate with noble metals donated by Vale from its Clarabelle mill in Copper Cliff, Ontario, Canada. This is the same source as its predecessor, PTC-1a.
Description
The mineral species include: pentlandite (34.7%), chalcopyrite (23.2%), pyrrhotite (22.4%), pyrite (5.6%), anorthoclase (4.9%), Fe-Si-S-O (possibly danalite, 3.6%), Fe-Ni alloy (1.0%), bravoite (0.8%), magnetite (0.6%), biotite and clinochlore (both at 0.5%), gypsum, millerite and quartz (all at 0.4%), other and sphalerite (both at 0.2%), ilmenite (0.1%).
Intended use
PTC-1b is suitable for the analysis of nickel, copper, gold, platinum and palladium and other elements in concentrates in concentrations ranging from major, minor to trace levels. Examples of intended use include quality control and method development. 
Instructions for use
PTC-1b 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 time possible. Unused material should be stored under an inert gas in a desiccator, or in a new, heat-sealed laminated foil pouch. The values herein pertain to the material when produced. CanmetMINING is not responsible for changes occurring after shipment. 
Handling instructions
Normal safety precautions for handling fine particulate matter are suggested, such as the use of safety glasses, breathing protection, gloves and a laboratory coat.
Method of preparation
The raw material was dried at 32°C and sieved to remove the plus 75 μm fraction. The recovery of the minus 75 μm fraction from the dried material was 61%. The product was blended, and then bottled in 200-gram units. Each bottle was purged with nitrogen and sealed in a laminated polyethylene - foil pouch to prevent oxidation. This is the only size that is available.