滴定法测定化妆品中无机亚硫酸盐和亚硫酸氢盐类的研究

Study on the Determination of Inorganic Sulfite and Bisulfite in Cosmetics by Titration Method

建立了氮吹-酸碱滴定法测定化妆品中无机亚硫酸盐和亚硫酸氢盐含量的方法。结果表明,经过试剂、吸收条件的优化,方法的定量检出限可达50 mg/kg,加标回收率达到80%以上。此方法可简便、快捷地检测化妆品中无机亚硫酸盐和亚硫酸氢盐的含量。

The determination of the content of inorganic sulfite and bisulfite in cosmetics was established by nitrogen blow-acid- base titration method. After optimizing the selection of reagents, conditions of absorbing process, the results showed that the detection limits for this method was up to 50 mg/kg, and the recovery rate reached to more than 80%. This method is simple and quick to detect the content of inorganic sulfite and bisulfate in cosmetics.