1 Aperçu de la méthode
After microwave digestion, the sample solution is injected into the graphite furnace of the atomic absorption spectrophotometer. Following electrothermal atomization, it absorbs the resonance line at 283.3 nm. Within a certain concentration range, the absorbance is proportional to the lead content, and quantification is performed by comparison with the standard series.
2. Champ d'application
This method is applicable to the determination of lead in graphite powder.
3 Reference Basis
GB/T 24533-2009
4 Instruments et réactifs
4.1 Instruments et équipements
4.1.1 Testing Instruments
| - Non, non. | Nom | Quantité | Exigences techniques | Accessoires |
|---|---|---|---|---|
| 1 | Four à graphite Spectrophotomètre d'absorption atomique | 1 ensemble | — | Lead Hollow-Cathode Lamp |
| 2 | Argon | 1 cylindre | Purity ≥99.99% | — |
| 3 | Système d'eau de refroidissement circulant | 1 ensemble | Rated pump flow rate: 3.5 L/min | — |
