Spectrographic Determination of Ferroalloys. IV : Determination of Impurities in Ferrosilicon
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A spectrographic method was studied to determine manganese, chromium, nickel and titanium in ferrosilicon with a quartz spectrograph of medium type. A stable discharge was obtained by exciting powdered ferrosilicon with a direct current arc. The favorable analytical line pair of each element to be determined was examined by using iron as internal standard. The calibration method described in the second report^<(2)> could also be applied to the analysis of ferrosilicon. The line pairs used were as follows : FeI 2813.29A/Mn 2801.06A, FeI 3399.34A/NiI 3414.77A, FeI 3399.34A/TiII 3372.80A, FeI 4250.79A/CrI 4254.35A and SiI 2987.65A/FeI 3016.19A.
- 東北大学の論文
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