Analysis of Carbon Black

Application Note EDXRF1846

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Scope

The analysis of carbon black, residual oil, and oil ash is demonstrated using semi- quant Fundamental Parameters (FP).

Background

Carbon black is made from coal tar and various petroleum tars from the cracking process. Carbon black is a crystalline form of carbon with very high surface area to volume ratio and is used mainly as a reinforcing filler in tires and used to strengthen engine hoses and gear belts. It is also used as copier toner inks and as pigment in polymers. The elemental characterization of the carbon black is critical to ensure proper quality of the various products. To meet this industry need, Applied Rigaku Technologies offers Energy Dispersive X-ray Fluorescence (EDXRF), ideal for the fast and simple analysis of carbon black and related products.

NEX DE  premium high-performance benchtop EDXRF elemental spectrometerModel: NEX DE

RPF-SQX semi-quant FP results

Sample I.D.: Carbon Black
Component NEX DE VS value Stat. error
Na ND* 0.05
Mg ND* 0.006
Al 0.0539 0.0014
Si (0.0029)* 0.0005
P 0.0375 0.0006
S 1.70 0.001
Cl 0.0015 0.0002
K 0.0344 0.0030
Ca 0.0202 0.0015
Ti ND* 0.0003
V ND* 0.0002
Cr ND* 0.0001
Mn ND* <0.0001
Co ND* <0.0001
Fe 0.0042 <0.0001
Ni ND* <0.0001
Cu (0.0001)* <0.0001
Zn ND* <0.0001
Ga ND* <0.0001
Ge ND* <0.0001
As ND* <0.0001
Sr <0.0001 <0.0001
Zr ND* <0.0001
Mo (<0.0001)* <0.0001
Cd (<0.0001)* <0.0001
Sn ND* <0.0001
Sb ND* <0.0001
Ba (0.0009)* 0.0001
Ta ND* <0.0001
W ND* <0.0001
Pb ND* <0.0001
Bi ND* <0.0001
C 98.1 Balance

Sample I.D.: Residual Oil
Component NEX DE VS value Stat. error
Na ND* 0.088
Mg ND* 0.008
Al 0.2 0.002
Si 0.131 0.001
P 0.0452 0.0005
S 1.09 0.001
Cl 0.0084 0.0001
K ND* 0.003
Ca ND* 0.001
Ti ND* 0.0004
V ND* 0.0002
Cr ND* 0.0001
Mn ND* <0.0001
Fe 0.0015 <0.0001
Co ND* <0.0001
Ni ND* <0.0001
Cu ND* <0.0001
Zn ND* <0.0001
Ga ND* <0.0001
Ge ND* <0.0001
As ND* <0.0001
Sr ND* <0.0001
Zr ND* <0.0001
Mo 0.0002 <0.0001
Cd ND* <0.0001
Sn ND* <0.0001
Sb ND* <0.0001
Ba (0.0012)* 0.0002
Ta ND* <0.0001
W ND* <0.0001
Pb ND* <0.0001
Bi ND* <0.0001
Oil 98.5 0.0007

Sample I.D.: Oil Ash
Component NEX DE VS value Stat. error
Na ND* 0.0752
Mg 1.93 0.01
Al 23.9 0.01
Si 21.3 0.01
P 0.408 0.001
S 0.182 0.0005
Cl 0.0374 0.0004
K (0.0438)* 0.0042
Ca 0.648 0.005
Ti 0.250 0.002
V 0.338 0.002
Cr 0.0824 0.0008
Mn 0.0236 0.0003
Fe 2.42 0.002
Co 0.0066 0.0004
Ni 0.129 0.0003
Cu 0.0096 <0.0001
Zn 0.0416 0.0001
Ga 0.0075 <0.0001
Ge ND* <0.0001
As 0.0011 <0.0001
Rb 0.0004 <0.0001
Sr 0.0146 0.0002
Y 0.0028 <0.0001

Sample I.D.: Oil Ash
Component NEX DE VS value Stat. error
Zr 0.0051 <0.0001
Mo 0.0026 <0.0001
Sn ND* <0.0001
Sb 0.0052 <0.0001
Ba 0.0142 0.0002
La 0.155 0.0006
Ce 0.155 0.0007
Cd ND* <0.0001
Ta ND* 0.0002
W ND* 0.0001
Pb 0.0042 <0.0001
Bi (0.0003)* <0.0001
O 47.9 Balance

Conclusion

Innovative design using 60 kV tube and high-resolution, 500,000+ cps detector throughout provides sensitivity for trace measurements and low detection limits. Simple, intuitive software flow makes the NEX DE an ideal EDXRF tool for the elemental identification (Na – U), screening, and characterization of raw materials and final products. Simple to operate, the NEX DE is used by the non-technical operator and researcher alike.

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