Trends of High-Performance Stainless Steel Generated by Purification

Nagoya, T.; Yamauchi, Takashi; Hasegawa, M.

doi:10.1002/1521-396x(199704)160:2<321::aid-pssa321>3.0.co;2-j

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…[1][2][3] Therefore, the precise determination of trace impurities is required in order to estimate the relationship between the material properties and the amounts of impurities.…”

Section: Introductionmentioning

confidence: 99%

Determination of Trace Amounts of Antimony and Boron in High-Purity Iron and Steel by Isotope Dilution/Inductively Coupled Plasma Mass Spectrometry

2002

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The highly sensitive and precise determination method for trace amounts of Sb and B in high-purity iron and steel has been established by the isotope dilution/Inductively coupled plasma mass spectrometry. For the determination of Sb, the iron matrix was separated by anion-exchange chromatography using Dowex I-X8 in hydrofluoric acid solution, and the isotope ratio ( 121 Sb/ 123 Sb) of the HNO 3 /H 2 O 2 eluate was measured by ICP-MS. The isobaric interference of 123 Te was corrected by subtracting the intensity of 123 Te obtained by the relative intensity of 123 Te and 125 Te. For the determination of B, after the treatment of sulfuric acid-phosphoric acid fuming for the complete decomposition of boron nitride, B was separated by the anion-exchange chromatography using Amberlite IRA-743 at pH 8. The CyDTA was added to prevent the hydrolysis of iron. The isotope ratio ( 11 B/ 10 B) of the HCl eluate was measured by ICP-MS. By these methods, Sb and B in the range of µg/g to sub-µg/g could be determined with good precision. The limit of detection is 5.8 ng/g for Sb and 16 ng/g for B in steel.

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“…[1][2][3] Therefore, the precise determination of trace impurities is required in order to estimate the relationship between the material properties and the amounts of impurities.…”

Section: Introductionmentioning

confidence: 99%

Determination of Trace Amounts of Antimony and Boron in High-Purity Iron and Steel by Isotope Dilution/Inductively Coupled Plasma Mass Spectrometry

2002

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Determination of Trace Amounts of Si and P in Iron and Steel Using Gel Chromatographic Separation Followed by ICP-MS

Hanada

Fujimoto

Shimura

et al. 1998

phys. stat. sol. (a)

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Analytical methods were investigated to improve the sensitivity of detecting trace amounts of Si and P in high‐purity iron and steels. Silicon and P in the solutions were converted to [SiMo12O40]—4 and [P2Mo18O62]—6, respectively, and adsorbed on a dextran gel column (Sephadex® G25 medium). For the analysis of Si, the column was washed with 10 w/v% oxalic acid + 10 v/v% nitric acid solution to remove the molybdophosphate, and the molybdosilicate was eluted with aqueous ammonia. The Mo in the eluate was determined by ICP‐MS, which resulted in the determination of Si. For the analysis of P, the adsorbed molybdophosphate, which was in the form of “molybdophosphate yellow”, was reduced to “molybdophosphate blue” by Sn(II). This conversion prevented the molybdophosphate from being eluted in the column washing process. After washing the column with 5 v/v% hydrochloric acid, the molybdophosphate was eluted with aqueous ammonia, and P was determined in the same fashion as the determination of Si. The determination of Si and P by the present method was not interfered by the presence of Al, As, Co, Cr, Cu, Mn, Ni, and Ti. The limits of determination were 0.05 ppm for Si, and 0.4 ppm for P.

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