Crm Solutions Suppliers – Reference Material For Coal Testing – Shandong Institute of Metallurgical Science
Crm Solutions Suppliers – Reference Material For Coal Testing – Shandong Institute of Metallurgical Science Detail:
Table 1. Certified Values for YSBC 28752-95 (Mass Fraction %)
|
Number |
Elements |
TFe |
SiO2 |
Al2O3 |
CaO |
MgO |
K2O |
|
YSBC 28752-95
|
Certified Values |
64.66 |
4.34 |
1.80 |
0.011 |
0.027 |
0.082 |
|
Uncertainty |
0.15 |
0.05 |
0.03 |
0.003 |
0.002 |
0.003 |
|
|
Number |
Elements |
Na2O |
TiO2 |
Mn |
S |
P |
|
|
YSBC 28752-95 |
Certified Values |
0.01 |
0.23 |
0.007 |
0.0091 |
0.020 |
|
|
Uncertainty |
0.01 |
0.02 |
0.001 |
0.0003 |
0.002 |
Table 2. Analysis Methods
|
Composition |
Method |
|
TFe |
Titanium(III) chloride reduction potassium dichromate titration method |
|
SiO2 |
Perchloric acid dehydration gravimetric methodThe silicomolybdic blue spectrophotometric methodICP-AES |
|
Al2O3 |
The chrome azurol S photometric method ICP-AES |
|
CaO |
ICP-AESAAS |
|
MgO |
ICP-AES AAS |
|
K2O |
ICP-AES AAS |
|
Na2O |
ICP-AES AAS |
|
TiO2 |
Diantipyrylmethane spectrophotometric method ICP-AES |
|
Mn |
Potassium periodate spectrophotometric method ICP-AESAAS |
|
S |
High frequency combustion infrared absorption methodBarium sulfate gravimetric methodCombustion iodometric method |
|
P |
Bismuth phosphomolybdenum blue photometryICP-AES |
Expiration of certification: The certification of this CRM is valid until January 1, 2025.
Table 3. Methods for homogeneity testing
|
Composition |
Analysis methods |
Minimum sample (g) |
|
TFe |
Titanium(III) chloride reduction potassium dichromate titration method |
0.2 |
|
SiO2 |
The silicomolybdic blue spectrophotometric method |
0.2 |
|
Al2O3、CaO、MgO、TiO2、Mn、P |
ICP-AES |
0.2 |
|
K2O、Na2O |
AAS |
0.2 |
|
S |
The Infrared absorption method |
0.2 |
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By Doreen from Belgium - 2018.10.01 14:14
The company can keep up with the changes in this industry market, product updates fast and the price is cheap, this is our second cooperation, it's good.
By Eric from Uruguay - 2018.04.25 16:46
