GB/T 37644-2019 Determination of oxyquinoline and nitroxoline in cosmetics—High performance liquid chromatography
GB/T 37644-2019 Determination of oxyquinoline and nitroxoline in cosmetics—High performance liquid chromatography
Basic Information
Scope
This standard specifies the principles, reagents and materials, instrumentation, experimental steps, result calculation, recovery rate and precision, and allowable deviations of the high-performance liquid chromatography method for determining 8-hydroxyquinoline and nitrohydroxyquinoline in cosmetics.
This standard is applicable to the determination of 8-hydroxyquinoline and nitrohydroxyquinoline in cosmetics.
The method's detection limit and quantification limit in this standard are as follows: Cosmetics (except wax-based and powder-based products): The detection limit of 8-hydroxyquinoline and nitrohydroxyquinoline is 1.5 mg/kg, and the quantification limit is 5.0 mg/kg; Wax-based and powder-based cosmetics: The detection limit of 8-hydroxyquinoline and nitrohydroxyquinoline is 3.0 mg/kg, and the quantification limit is 10.0 mg/kg.