This standard specifies the determination principle, reagents and materials, instruments and equipment, analysis steps, result calculation, detection limit, recovery rate and tolerance of the method for determination of sodium azulenesulfonate content in toothpaste. This standard is applicable to the determination of the content of sodium azulene sulfonate added to toothpaste. The detection concentration of sodium azulenesulfonate in this standard is 0.15 mg/L, and the quantitative concentration is 0.5 mg/L; when the sampling amount is 0.5 g, the detection limit of this method is 30 mg/kg, and the quantitative limit is 100 mg/kg. .
QB/T 5219-2018 Referenced Document
GB/T 6682 Water for analytical laboratory use.Specification and test methods
QB/T 5219-2018 history
2018QB/T 5219-2018 Determination of sodium gualenate in toothpaste.High performance liquid chromatography