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The rapid quantitative analysis of nitrogen in steel with optical emission spectrometry is described.The problems about the selection of spectral line for the determination of nitrogen,the analytical conditions of nitrogen,the preparation of analytical sample,the effect of co-existing element and the calibration curve of nitrogen are discussed.The analytical range of nitrogen is 0.000 5%to 0.30%,the limit of detection is 0.000 374%,the analytical time is less than 2 min(including the preparation of sample and the exciting sample for two times).Nitrogen in steel is simultaneously determined with alloy elements and acid soluble/insoluble compounds of aluminium.
The rapid quantitative analysis of nitrogen in steel with optical emission spectrometry is described. Problems about spectral line for the determination of nitrogen, the analytical conditions of nitrogen, the preparation of analytical sample, the effect of co-existing element and the the limit of detection is 0.000 374%, the analytical time is less than 2 min (including the preparation of sample and the exciting sample for two times ). Nitrogen in steel is to be determined with alloy elements and acid soluble / insoluble compounds of aluminum.