แอปพลิเคชัน

1 ภาพรวมวิธี
The test portion is heated and dissolved in a quartz beaker with mixed sulfuric‑phosphoric acid. After dilution with water, the absorbance of potassium is measured at a wavelength of 766.5 nm on an atomic absorption spectrophotometer using an air‑acetylene flame. Within a certain concentration range, the absorbance of potassium is proportional to its content, and quantification is performed by comparison with the standard series.

2 ขอบเขตการใช้งาน
This method is applicable to the determination of potassium oxide content in alumina powder.

3 Reference Basis
GB/T 6609.6‑2018, Methods for chemical analysis and physical property testing of alumina — Part 6: Determination of potassium oxide content

4. อุปกรณ์และสารเคมี

4.1 เครื่องมือและอุปกรณ์

4.1.1 Testing Instruments