Analysis of Carbon phases in solids according to DIN19539

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Simultaneous determination of TIC, TOC and ROC (EC) by the temperature ramping method

For many years the Carbon Phase Analysis has been a wet chemistry method with acid usage for removal or determination of the Inorganic Carbon. Beside the disadvantages of acid usage a systematic error regarding the Elemental Carbon has been introduced. The Elemental Carbon was always counted erroneously as TOC (Total Organic Carbon). With the upcoming DIN19539 this problems may be solved.
The new standard approves the temperature ramping method for determination of TOC, TIC and EC*.
* remark: EC is sometimes called as ROC

Users of LECO RC series analyzers can benefit of carbon phases determination in one single run without use aggressive acids or other chemicals.
The method is applicable to soil, waste, and other solid environmental samples.

LECO RC612 analyzer benefits :

  • TOC / TIC / EC /ROC analysis in solid samples
  • Temperature differentiation method
  • Compliant to DIN 19539 and VD Lufa Methods
  • Water Phase analysis as additional parameter
  • Alternative carrier gases Oxygen/Nitrogen
A linear temperature ramping from 100 to 1000°C shows Carbon/Water signals. A look to the Carbon Peak curve shows three different Carbon phases beeing "burned" during the tempreature rising : the Organic Carbon, Elemental Caron and Inorganic Carbon

A linear temperature ramping from 100 to 1000°C shows Carbon/Water signals. A look to the Carbon Peak curve shows three different Carbon phases beeing separated during the
tempreature rising : the Organic Carbon, Elemental Carbon and Inorganic Carbon. A Water signal shows moisture release at lower temperatures (first peak) and the second peak coincident with TOC allows reliable confirmation of Total Organic Carbon phase.

 

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