化妆品中限用组分月桂醇聚醚-9的 测定　液相色谱-串联质谱法 Determination of restricted lauryl alcohol polyether-9 in cosmetics— Liquid chromatography tandem mass spectrometry  ICS  71.100.70 CCS  Y 42   中华人民共和国国家标准 GB/T 44366—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     液相色谱参考条件   ···············································································   2      7.3     质谱参考条件   ····················································································   2      7.4     标准工作曲线绘制   ···············································································   3      7.5     定性确证   ·························································································   3      7.6     定量分析   ·························································································   3      7.7     空白试验   ·························································································   3 8     试验数据处理   ·························································································   3 9     回收率   ································································································   4 10     精密度   ·······························································································   4 附录A （资料性）    月桂醇聚醚﹘9标准物质的信息   ····················································   5 附录B （资料性）    月桂醇聚醚﹘9选择离子MRM色谱图   ·············································   6 GB/T 44366—2024     Ⅰ