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HV-2a銅鉬礦成分分析標(biāo)準(zhǔn)物質(zhì)Copper-molybdenum ore

Table 1 – HV-2a Certified Values
Element Units Mean Within-lab Standard Deviation Between-labs Standard Deviation 95% Confidence Interval of Mean
Ag μg/g 1.448 0.089 0.089 0.048
Al (no AD2) a % 7.96 0.10 0.20 0.11
As μg/g 12.1 0.8 1.7 1.2
Ba (no AD2) a μg/g 869 15 29 15
Ca (no AD2) a % 1.891 0.035 0.080 0.037
Ce b μg/g 19.1 0.6 1.3 0.8
Co μg/g 3.40 0.10 0.44 0.27
Cr μg/g 100 4 11 8
Cs (no AD2) a μg/g 2.70 0.09 0.16 0.10
Cu % 0.3808 0.0057 0.0076 0.0032
Dy c μg/g 1.126 0.053 0.085 0.063
Er c μg/g 0.646 0.039 0.055 0.039
Fe (no AD2) a % 2.044 0.036 0.095 0.041
Ga (no AD2)a μg/g 19.56 0.45 0.80 0.48
Gd b μg/g 1.40 0.09 0.11 0.08
K (no AD2) a % 2.31 0.03 0.10 0.06
La μg/g 9.1 0.5 1.4 0.7
Mg (no AD2)a % 0.329 0.008   0.030 0.015
Mn b μg/g 545 12 29 15
Mo μg/g 125.4 2.5 6.2 3.1
Na c % 2.335 0.036 0.066 0.037
Nd b, e μg/g 8.77 0.40 0.57 0.43
Ni μg/g 6.47 0.32 0.55 0.33
P % 0.0427 0.0025 0.0038 0.0023
Pb μg/g 6.9 0.5 1.2 0.6
Rb (no AD2)a μg/g 48.3 1.0 2.8 1.7
S % 0.344 0.008 0.034 0.013
Sb (no AD2) a μg/g 0.689 0.058 0.085 0.064
Si d % 31.34 0.23 0.59 0.40
Sm c μg/g 1.69 0.13 0.13 0.09
Sr (no AD2) a μg/g 472 9 19 9
Th μg/g 1.28 0.09 0.13 0.07
Ti (no AD2) a μg/g 0.128 0.004 0.017 0.010
U μg/g 1.08 0.09 0.12 0.07
Zn (no AD2) a μg/g 56.5 2.3 3.9 2.2
Set(s) using digestion by two acids (hydrochloric and nitric) was/were excluded as method outliers based on statistical tests.        
Sets using microwave digestion by three acids (hydrochloric, nitric and hydrofluoric acids) were excluded as method outliers based on statistical tests.
Methods using only digestion by four acids (hydrochloric, nitric, hydrofluoric and perchloric), microwave digestion with 3 acids and various fusions were used by the laboratories.
All accepted sets of data except one were derived from various fusions.
Methods using only digestion by four acids and various fusions were included based on statistical tests.
 

Table 2 – HV-2a Provisional Values  
Analyte Units Mean Within-lab Standard Deviation Between-labs Standard Deviation 95% Confidence Interval of Mean
Be (no AD2) a, b μg/g 1.02 0.04 0.13 0.14
Bi μg/g 1.58 0.11 0.19 0.15
Eu c μg/g 0.502 0.029 0.046 0.037
loss on ignition d % 3.01 0.05 0.29 0.21
Lu (AD4, FUS) e μg/g 0.109 0.008 0.019 0.015
Pr c μg/g 2.32 0.077 0.083 0.075
V (no AD2) b μg/g 52.2 1.2 4.7 2.5
W (no AD2) b μg/g 7.89 0.52 0.52 0.46
Y μg/g 5.96 0.13 0.81 0.45
Yb f, g μg/g 0.680 0.047 0.069 0.048
Zr (FUS) a, h μg/g 65.8 5.0 5.0 4.9
a  statistical analysis of the data warrants classification as provisional despite only 6 sets of data.
sets using digestion by two acids (hydrochloric and nitric) were excluded as method  outliers based on statistical tests.
sets other than digestion using four acids (hydrochloric, nitric, hydrofluoric and perchloric) and various fusions were excluded as method outliers based on statistical tests.
samples of 1 to 10 grams were ignited for 0.5 to 2 hours at 950 to 1050°C.
methods using digestion by four acids  and various fusions were used by the laboratories
methods using digestion by four acids, microwave digestion with 3 acids (hydrochloric, nitric and hydrofluoric acids)  and various fusions were used by the laboratories.
data fulfilled the conditions for certified but the element was reclassified as provisional since a considerable amount of the data has only one significant figure.
only various fusion methods were used by the laboratories.
 

Table 3 – HV-2a Informational Values (semi-quantitative only)
Analyte Units Mean No. accepted laboratories / values Analyte Units Mean No. accepted laboratories / values
C % 0.4 3 / 15 Sc μg/g 3 7 / 35
Cd μg/g 0.2 5 / 25 Se μg/g 0.7 4 / 20
Hf (FUS) a μg/g 2 4 / 20 Sn μg/g 1.2 6 / 30
Ho (FUS) a μg/g 0.2 5 / 25 Ta f μg/g 0.2 6 / 30
Fe (AD2) b % 1.6 3 / 15 Tb g μg/g 0.19 5 / 25
Li (no AD2) c μg/g 11 5 / 25 Tl μg/g 0.1 4 / 20
moisture d % 0.3 6 / 28 Tm a μg/g 0.10 5 / 25
Nb μg/g 2 7 / 35 Zn (AD2) b μg/g 40 3 / 15
Re e μg/g 0.1 3 / 15 Cont’d
only various fusion methods were used by the laboratories.
methods using only digestion by two acids (hydrochloric and nitric) were used by  the laboratories.
the accepted sets included digestion by four acids (hydrochloric, nitric, hydrofluoric and perchloric) and microwave digestion with 3 acids (hydrochloric, nitric and hydrofluoric).
samples of 1-10 grams were dried for 0.5 to 12 hours at 100 to 105°C.
methods using only acid digestion were  used by the laboratories.
methods using digestion by four acids and fusion with lithium metaborate were used by the laboratories.   
methods using digestion by four acids and various fusions were used by the laboratories.
Source
HV-2a is a copper-molybdenum ore donated by Teck Highland Valley Copper Partnership in British Columbia, Canada. This is the same source as its predecessors, HV-2 and HV-1.

Description
The mineral species include: quartz (38.0%), albite (35.2%), muscovite (17.5%), calcite (2.1%), epidote (1.5%), kaolinite (1.3%), various other silicates in minor amounts (1.2%), magnetite (1.0%), chalcopyrite (0.5%), bornite (0.4%), ankerite and apatite (each at 0.3%), diopside, siderite and titanite (each at 0.2%), pyrite (0.1%) and hypersthene (0.03%).

Intended Use
HV-2a is suitable for the analysis of copper and molybdenum and various other elements in ores in concentrations ranging from major, minor to trace levels. Examples of intended use include quality control and method development. 

Instructions for use
HV-2a should be used “as is”, without drying. The contents of the bottle should be thoroughly mixed before taking samples.  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 ground and sieved to remove the plus 75 μm fraction. The recovery of the minus 75 μm fraction was 73%.  The product was blended, and then bottled in 200-gram units. This is the only size that is available.

Homogeneity
The homogeneity of the stock was investigated using fifteen bottles chosen according to a stratified random sampling scheme. Three subsamples were analyzed from each bottle. Subsamples of 0.25g grams were digested using hydrofluoric, hydrochloric, nitric and perchloric acids, and analyzed by inductively coupled plasma – optical emission spectrometry for copper,  and inductively coupled plasma – mass spectrometry for molybdenum. Use of a smaller subsample than specified above will invalidate the use of the certified values and associated parameters.