十二烷基硫酸钠质量控制研究___

Abstract  Objective：Research on quality of SDS by capillary gas chromatography. Method：The capillary column was HP-5（30 m×0.53 mm，1.50 μm）.The carrier gas was nitrogen and FID as detector，temperature programming and direct sample injection. To determine impurity of 1-Dodecanol,one of hydrolysate of SDS by peak area normalization, to determine content of SDS by external standard method with 1-Dodecanol as reference substance. Results：Under the above condition，there was good linear relationship in the concentration range of 6.16 μg·mL^-1–6.16 mg·mL^-1，r=0.9999. There were relatively great differences in impurity over products of different manufacturers which have same labeled content. Conclusion：The method is simple，accurate，reproducible and suitable for determination of GC impurity and content of SDS.