Oxygen and Nitrogen Analysis

Luvak Inc. has experience with determination of Oxygen and Nitrogen content

Method: Inert Gas Fusion Equipment: Leco TC-436 Oxygen-Nitrogen Analyzer Reference: ASTM E 1019, ASTM E 1409

A weighed sample is melted in a graphite crucible in a stream of helium. The oxygen in the sample combines with carbon to form CO which is converted by a catalyst to CO2. An infrared cell determines the CO2 content from which the weight % of oxygen in the sample is calculated. Molecular nitrogen is released from the sample and is separated from any hydrogen and carbon monoxide liberated from the sample. A thermal conductivity cell determines the nitrogen content from which the weight % of nitrogen in the sample is calculated. A nickel flux is used for metals that melt at high temperatures. Calibration is verified with NIST or NIST traceable standard reference materials of known oxygen and nitrogen content. Luvak Inc. has experience with determination of oxygen and nitrogen content ranging from trace amounts less than 5 ppm to the percentages present in metal oxides and nitrides.