Carbon analysis is performed by oxidizing a sample in oversupply of oxygen, trapping the resulting Carbon Dioxide CO2, and then measuring it by a detector.
To achieve accurate measurements the combustion of the sample should be complete. Depending on the material of the sample some accelerators could be used. The accelerators help to initiate and speed up the combustion process and also ensuring that the combustion is complete. Accelerators should not skew the final results by introducing any additional Carbon into the analysis process.
Purity of Oxygen used in the combustion process also affects the results. Oxygen might contain residual amounts of Carbon Dioxide (CO2). Even when additonal Oxygen purifying equipment is used traces of CO2 might still influence the result. This issue is addressed by conducting calibration tests on the Oxygen itself before combusting the actual sample. Calibration tests will also help to account for any Carbon traces introduced by the equipment, like the furnace and the crucible.
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