洗衣液中脂肪酸盐含量测定  

Determination of fatty acid salts in laundry liquids

作　　者：蒋良宇 李春霞 郭晶勇 JIANG Liang-yu;LI Chun-xia;GUO Jing-yong(Wilmar Oleo Co.,Ltd.,Shanghai 200137,China)

机构地区：[1]丰益油脂科技有限公司,上海200137

出　　处：《日用化学品科学》2021年第5期18-22,共5页Detergent & Cosmetics

摘　　要：为准确分析洗衣液中脂肪酸盐含量,采用复合脂肪酸洗衣液样品,通过气相色谱法与干钠皂法相结合的分析方法测定其中脂肪酸盐含量,并比较与实际含量的差别。结果表明,测定C12~C18饱和脂肪酸盐及油酸盐的绝对误差均小于0.1%,表观上准确度较高,但对于不同脂肪酸组成洗衣液的测定相对准确度存在一定的差异(相对误差低于5%)。该方法不仅可以分析脂肪酸盐的种类,还可以分析每一种脂肪酸盐含量。To accurately analyze the content of fatty acid salts in laundry liquids,the laundry detergents containing several fatty acids were used as samples,and the contents of fatty acid salts were determined by gas chromatography combined with dry sodium soap method.The test results were compared with the actual contents of fatty acid salts.The results showed that the absolute errors of C12~C18 saturated fatty acid salts and oleate were less than 0.1%,and the apparent accuracy was high.However,there was some difference in the relative accuracy for laundry liquids with different fatty acid compositions(the relative error was less than 5%).This method could not only analyze the types of fatty acid salts,but also analyze the content of each fatty acid salt.

关 键 词：气相色谱法 干钠皂法 洗衣液 脂肪酸盐 

分 类 号：TQ649[化学工程—精细化工]