1 Gambaran Umum Metode
The wheel hub is thoroughly cleaned with ultrapure water and air-dried. A scraper is used to remove the topcoat, intermediate coating and primer on the surface. After microwave digestion, the concentration of chromium is determined by flame atomic absorption spectrometry at a wavelength of 357.9 nm.
2. Ruang Lingkup Penerapan
Determination of chromium in surface coatings of wheel hubs
3 Standar Referensi
IEC 62312
4 Instruments and Reagents
4.1 Instrumen dan Peralatan
4.1.1 Analytical Instruments
表格
| Tidak, tidak. | Nama | Kuantitas | Persyaratan Teknis | Aksesoris |
|---|---|---|---|---|
| 1 | Spektrofotometer Penyerapan Atom Api | 1 set | — | Lampu Katoda Hollow Kromium |
| 2 | Acetylene Gas Cylinder | 1 silinder | Kemurnian ≥ 99,99% | — |
| 3 | Kompresor Udara | 1 unit | Tekanan knalpot nominal: 0,3 MPa | — |