1 Method Overview
After sample digestion, the sample is atomized by flame, and the absorbance is measured at 324.8 nm. Within a certain concentration range, the absorbance of copper is proportional to its content, and quantification is performed by comparison with the standard series.
2 Scope of Application
This method is applicable to the determination of copper in nylon.
3 Instruments and Reagents
3.1 Instruments and Equipment
3.1.1 Testing Instruments
| No. | Name | Quantity | Technical Requirement | Accessories |
| 1 | Flame Atomic Absorption Spectrophotometer | 1 set | — | Copper Hollow-Cathode Lamp |
| 2 | Air Compressor | 1 set | Rated exhaust pressure: 0.3 MPa | — |
| 3 | Acetylene | 1 cylinder | Purity ≥99.99% | — |
