1 방법 개요
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. 적용 범위
This method is applicable for the determination of iron in zinc alloys.
3 참조 표준
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
| 아니야 | 이름 | 수량 | 기술적 요구 사항 | 부속품 |
|---|---|---|---|---|
| 1 | 불꽃 원자 흡수 분광광계기 | 1 세트 | — | Iron hollow‑cathode lamp |
| 2 | 공기 압축기 | 1 세트 | Rated discharge pressure: 0.3 MPa | — |
| 3 | 아세틸렌 | 1 실린더 | Purity ≥99.99% | — |
