1 Panoramica del metodo
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 Ambito di applicazione
This method is applicable to the determination of lead in graphite powder.
3 Reference Basis
GB/T 24533-2009
4 Strumenti e reagenti
4.1 Strumenti e attrezzature
4.1.1 Testing Instruments
| - No, no, no. | Nome | Quantità | Requisito tecnico | Accessori |
|---|---|---|---|---|
| 1 | Spettrofotometro di assorbimento atomico forno grafite | 1 set | — | Lead Hollow-Cathode Lamp |
| 2 | Argon | 1 cilindro | Purity ≥99.99% | — |
| 3 | Sistema di acqua di raffreddamento circolante | 1 set | Rated pump flow rate: 3.5 L/min | — |
