التطبيقات

1 نظرة عامة على الطريقة
After the sample is digested, lanthanum solution is added as a releasing agent. The sample is atomized in an atomic‑absorption flame, and the absorbance is measured at 422.7 nm. Within a certain concentration range, the absorbance is proportional to the calcium content, and quantification is performed by comparison with the standard series.

2 نطاق التطبيق
This method is applicable to the determination of calcium in milk powder.

3 Reference Basis
GB 5009.92‑2016, National Food Safety Standard — Determination of Calcium in Foods

4. الأدوات والكواشف

4.1 الأدوات والمعدات

4.1.1 Testing Instruments