Abstract：At present, there is no corresponding national standard or industrial standard for the determination of nitrogen in aluminum-vanadium alloy. Consequently a method for the determination of nitrogen in aluminum-vanadium alloy by inert gas fusion-thermal conductivity was established. The optimum experimental conditions for the analysis of nitrogen were investigated. In experiments, 0.07g of sample was put into the nickel basket, which was then transferred into graphite crucible after degassing. The analysis power was controlled at 5.0kW and the analysis time of nitrogen was 60s. The instrument was calibrated using standard aluminum-vanadium alloy sample. The proposed inert gas fusion-thermal conductivity method was applicable for the determination of nitrogen content in aluminum-vanadium alloy. The limit of detection was 0.00012%. The limit of quantification was 0.0004%, which was calculated by 10 times of standard deviation of the blank. The method was adopted to determine the nitrogen content in two aluminum-vanadium alloys. The relative standard deviation (RSD, n=11) of results were between 6.9% and 11%. The spiked recoveries were between 94% and 107%.
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