China A Reference Material – Reference Material For Coal Testing – Shandong Institute of Metallurgical Science

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China A Reference Material – Reference Material For Coal Testing – Shandong Institute of Metallurgical Science

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  • China A Reference Material – Reference Material For Coal Testing – Shandong Institute of Metallurgical Science
  • China A Reference Material – Reference Material For Coal Testing – Shandong Institute of Metallurgical Science

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China A Reference Material – 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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