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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