化妆品中限用组分二氨基嘧啶氧化物的 测定　高效液相色谱法 Determination of restricted 2,4-diamino-pyrimidine-3-oxide in cosmetics— High performance liquid chromatography  ICS  71.100.70 CCS  Y 42   中华人民共和国国家标准 GB/T 44367—2024 2024-08-2 3发布 2025-03-0 1实施     国家市场监督管理总局 国家标准化管理委员会 发 布 目　　次 前言   ·····································································································   Ⅲ 1     范围   ··································································································   1 2     规范性引用文件   ······················································································   1 3     术语和定义   ···························································································   1 4     原理   ··································································································   1 5     试剂和材料   ···························································································   1 6     仪器设备   ······························································································   2 7     试样制备和试验步骤   ·················································································   2      7.1     试样制备   ·························································································   2      7.2     高效液相色谱测定参考条件   ·····································································   2      7.3     标准工作曲线绘制   ···············································································   2      7.4     试样测定   ·························································································   2      7.5     空白试验   ·························································································   3 8     试验数据处理   ·························································································   3 9     回收率   ································································································   3 10     精密度   ·······························································································   3 附录A （资料性）    二氨基嘧啶氧化物标准品的信息   ··················································   4 附录B （资料性）    二氨基嘧啶氧化物标准溶液的色谱图和光谱图   ····································   5 GB/T 44367—2024     Ⅰ