1. 1) K. Nakayama and K. Wagatsuma: ISIJ Int., 56 (2016), 1114. https://doi.org/10.2355/isijinternational.ISIJINT-2015-648
2. 2) JIS G 1215-1: 2010, Iron and steel —Determination of sulfur content — Part 1: Gravimetric method after separation of iron (in Japanese).
3. 3) K. Fujimoto, M. Shimura and S. Satoh: Tetsu-to-Hagané, 88 (2002), 285 (in Japanese). https://doi.org/10.2355/tetsutohagane1955.88.6_285
4. 4) JIS G 1258-1: 2014, Iron and steel — ICP atomic emission spectrometric method — Part 1: Determination of various elements — Decomposition with acids and fusion with potassium disulfate (in Japanese).
5. 5) JIS G 1258-3: 2014, Iron and steel — ICP atomic emission spectrometric method — Part 3: Determination of various elements — Decomposition with acids and fusion with sodium carbonate (in Japanese).