1. 1) M. Sasabe: Bull. Iron Steel Inst. Jpn., 15 (2010), 562.
2. 2) JIS G 1215-1, Iron and steel-Determination of sulfur content-Part 1: Gravimetric method after separation of iron, (2010).
3. 3) JIS G 1215-2, Iron and steel-Determination of sulfur content-Part 2: Gravimetric method after chromatographic separation, (2010).
4. 4) JIS G 1215-3, Iron and steel-Determination of sulfur content-Part 3: Methylene blue spectrophotometric method after separation of hydrosulfide, (2010).
5. 5) JIS G 1215-4, Iron and steel-Determination of sulfur content-Part 4: Infrared absorption method after combustion in an induction furnace, (2010).