Low Alloy Steel Factory – Converter Slag Certified Reference Material for Chemical Analysis – Shandong Institute of Metallurgical Science
Low Alloy Steel Factory – Converter Slag Certified Reference Material for Chemical Analysis – Shandong Institute of Metallurgical Science Detail:
The CRM is used for the quality control and calibration of analytical instruments in analysis of converter slag. It is also used for the evaluation and verification of accuracy of the analytical methods. The CRM can be used for the transfer of measured value.
Table 1. Certified Values for YSBC 28863-2017 (Mass Fraction %)
|
Number |
Elements |
TFe |
SiO2 |
CaO |
MgO |
Al2O3 |
FeO* |
MnO |
TiO2 |
S |
P2O5 |
|
YSBC 28863-2017 |
Certified Values |
15.33 |
14.17 |
44.45 |
7.01 |
2.76 |
11.43 |
2.40 |
0.65 |
0.17 |
2.21 |
|
Uncertainty |
0.09 |
0.09 |
0.11 |
0.08 |
0.04 |
0.07 |
0.04 |
0.02 |
0.01 |
0.04 |
|
|
Number |
Elements |
K2O |
Na2O |
Cr2O3* |
V2O5* |
As* |
Pb* |
Zn* |
F* |
Cd* |
|
|
YSBC 28863-2017 |
Certified Values |
0.10 |
0.13 |
0.12 |
0.186 |
0.0003 |
0.0074 |
0.010 |
0.39 |
(0.0001) |
|
|
Uncertainty |
0.01 |
0.01 |
0.01 |
0.004 |
0.0001 |
0.0004 |
0.001 |
0.01 |
— |
Note 1: ( ) Indicates information value
Note 2: * Indicates that it is not within the recommended scope for production proficiency of RMP
Table 2. Analysis methods
|
Composition |
Method |
|
TFe |
Titanium(Ⅲ) chloride reduce potassium dichromate titration method |
|
SiO2 |
Perchloric acid dehydration gravimetric method ICP-AES |
|
CaO |
EDTA titrimetric method Potassium permanganate titration method |
|
MgO |
EDTA titrimetric method EyDTA titrimetric method ICP-AES |
|
Al2O3 |
EDTA titrimetric method The chrome azurol S photometric method ICP-AES |
|
FeO |
Potassium dichromate titration |
|
MnO |
ICP-AES AAS Potassium periodate spectrophotometric method |
|
TiO2 |
ICP-AES Diantipyrylmethane spectrophotometric method |
|
S |
High frequency combustion infrared absorption method Barium sulfate gravimetric method Combustion iodometric method ICP-AES |
|
P2O5 |
Bismuth phosphomolybdenum blue photometry ICP-AES |
|
K2O |
ICP-AES AAS |
|
Na2O |
ICP-AES AAS |
|
Cr2O3 |
ICP-AES AAS Diphenyl carbazide spectrophotometric method |
|
V2O5 |
ICP-AES The N-benzoyl’-N-phenylhydroxylamine extraction spectrophotometric method AAS |
|
As |
ICP-AES Hydride generation ICP-AES AFS ICP-MS Hydride generation AAS |
|
Pb |
ICP-MS ICP-AES Carrier precipitation- ICP-AES AAS |
|
Zn |
ICP-AES AAS |
|
F |
Ion-selective electrode method Ion chromatography |
|
Cd |
ICP-MS GAAS |
Expiration of certification: The certification of this CRM is valid until February 1, 2022.
Table 3. Methods for homogeneity testing
|
Composition |
Analysis methods |
Minimum sample (g) |
|
TFe |
Titanium(Ⅲ) chloride reduce potassium dichromate titration |
0.2 |
|
FeO |
Potassium dichromate titration |
0.2 |
|
SiO2 |
Perchloric acid dehydration gravimetric method |
0.2 |
|
CaO, MgO |
EDTA titrimetric method |
0.2 |
|
Al2O3, MnO, TiO2, P 2O5, K2O, Na2O, Cr2O3, V2O5, Pb, Zn |
ICP-AES |
0.1 |
|
S |
High frequency combustion infrared absorption method |
0.1 |
|
F |
Ion-selective electrode method |
0.2 |
|
As, Cd |
ICP-MS |
0.2 |
The certified reference material is packed in glass bottles with plastic covers. The net weight is 50g each. It is suggested to keep dryness when stored. The certified reference material should be dried at 105℃ for 1 hour before use, then it should be taken out and cooled to room temperature.
Shanghai Baosteel Technology Center
Angang Technology Centre
WISCO Technology Centre
52 Institure of China Industries Group
ChongQing Iron Steel Research Institure Co.Ltd
Standard Sample Institute, Wuhan University of Science and Technology
Shandong Metallurgical Research Institute Test Center
Shandong Metallurgical Product Quality Supervision and Inspection Station
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