This standard specifies the determination of potassium and sodium in food by flame emission spectrometry. This standard applies to the determination of potassium and sodium in various foods. The detection limit of this method: potassium is 0.05μg, sodium is 0.3μg; linear range: potassium is 0.1μg-0.5μg; sodium is 1.0μg-4.0μg.
GB/T 5009.91-2003 history
2017GB 5009.91-2017 Determination of Potassium and Sodium in Food Safety National Standards
2003GB/T 5009.91-2003 Determination of potassium and sodium in foods
1990GB/T 12397-1990 Method for determination of potassium and sodium in foods
GB/T 5009.91-2003 Determination of potassium and sodium in foods has been changed from GB/T 12397-1990 Method for determination of potassium and sodium in foods.
GB/T 5009.91-2003 Determination of potassium and sodium in foods was changed to GB 5009.91-2017 Determination of Potassium and Sodium in Food Safety National Standards.