Determination of Trace Element Quantities in Ultra High-Purity Iron by Spectrochemical Analysis after Chemical Separation
-
- Takada Kunio
- Institute for Materials Research, Tohoku University
-
- Ashino Tetsuya
- Institute for Materials Research, Tohoku University
-
- Itagaki Toshiko
- Institute for Materials Research, Tohoku University
-
- Morimoto Yukitoshi
- Nanometal Analyst Corp.
-
- Wagatsuma Kazuaki
- Institute for Materials Research, Tohoku University
-
- Abiko Kenji
- Institute for Materials Research, Tohoku University
この論文をさがす
抄録
When trace elements in an ultra high-purity iron were determined, an analytical blank on a chemical analysis interfered with the determination of them. Similarly, the existence of major component in a sample interfered with the determination of trace elements. Therefore, in order to determine trace elements, it was examined that how to remove or decrease an analytical blank and how to separate trace elements from major component of a sample. For example, when C and S in an ultra high-purity iron were determined by combustion/infrared absorption method, an accelerator for combustion of an analytical sample contained C and S as blank. The accelerator consisted of a mixture of tungsten and tin. By heating it in ambient atmosphere, carbon blank was removed to be zero and sulfur blank was decreased to lower level. Consequently, when detection limit was defined as a value corresponding to 3 times of the standard deviation of blank value, it of carbon was infinitesimal and it of sulfur was 0.2 \\microgram g−1. Infinitesimal detection limit of carbon resulted from zero of the blank value of carbon. For that reason, detection limit of carbon was read as 0.01 \\microgram g−1 of carbon that was minimum scale for carbon on the analytical instrument, because the standard deviation of the blank value could not to be calculated. Independently, in order to determine trace Sn, Ag and Au in a high-purity iron, these elements were separated from major component (iron) by co-precipitation. Metallic Pd was used as co-precipitant. Metallic Pd had been rarely used as co-precipitant. The elements were determined by electrothermal atomic absorption spectrometry (ET-AAS). When these elements were detected by ET-AAS, the Pd was available as chemical modifier. By the separation, content 0.002–0.02 \\microgram g−1 of the elements was determined.
収録刊行物
-
- MATERIALS TRANSACTIONS
-
MATERIALS TRANSACTIONS 43 (2), 105-110, 2002
公益社団法人 日本金属学会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390001204248421632
-
- NII論文ID
- 10012320605
- 130004451756
-
- NII書誌ID
- AA1151294X
-
- COI
- 1:CAS:528:DC%2BD38XivVCjsLk%3D
-
- ISSN
- 13475320
- 13459678
-
- HANDLE
- 10097/52313
-
- NDL書誌ID
- 6085446
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可