衍生气相色谱法测定化妆品中的游离甲醛

Determination of dissociate formaldehyde in cosmetics by derivative gas chromatography analysis

建立了测定化妆品中游离甲醛的衍生气相色谱法 ,方法最小检测量可达 5 75pg;在 8 3～ 1 66μg L浓度范围内 ,线性关系良好 ,回归方程Y =62 69X +7 897,r=0 9996 ;对于基质为有色或不透明的样品 ,本方法准确度显著高于乙酰丙酮分光光度法 (P <0 0 5)。本方法不受样品基质及试剂颜色等因素干扰 。

A method for determination of dissociate formaldehyde in cosmetics by derivative gas chromatography analysis was presented in the paper. The lowest detection limit of analysis was 5 75pg; the linear calibration curve for formaldenhyde were measured within the range of 8 3-166μg/L ,and the correlative coefficient was 0 9996. It was showed that this method was simple and easy to handle, and interferential factors were less, and accuracy was high.