1 方法概要
The sample is digested with hydrochloric acid, hydrogen peroxide and nitric acid solution. In dilute hydrochloric acid medium, the absorbance of iron is measured by air‑acetylene flame at the wavelength of 248.3 nm using an atomic absorption spectrometer.
2 適用範囲
This method is applicable for the determination of iron in zinc alloys.
3 参照標準
GB/T 12689.5‑2004 Chemical analysis methods for zinc and zinc alloys — Determination of iron content — Sulfosalicylic acid spectrophotometry and flame atomic absorption spectrometry, Method 2: Flame atomic absorption spectrometry
4 Apparatus and Reagents
4.1 Apparatus and Equipment
4.1.1 Testing Instruments
| いや | 名前 | 量 | 技術要件 | アクセサリー |
|---|---|---|---|---|
| 1 | 火焰原子吸収分光計 | 1セット | — | Iron hollow‑cathode lamp |
| 2 | 空気圧縮機 | 1セット | Rated discharge pressure: 0.3 MPa | — |
| 3 | アセチレン | 1つのシリンダー | Purity ≥99.99% | — |
