气相色谱法测定日化产品中甲醇含量的研究  

Determination of Methanol Content in Daily Chemical Products by Gas Chromatography

作　　者：林泽鹏 鲁作栋 李圣男 杜柏豪 雷森海 伍碧云 LIN Zepeng;LU Zuodong;LI Shengnan;DU Bohao;LEI Senhai;WU Biyun(Guangzhou Fu'an Testing Technology Co.,Ltd.,Guangzhou 510555,China;Guangdong Vocational College of Science and Trade,Guangzhou 510430,China;Kangzheng Testing Service Co.,Ltd.,Guangzhou 510700,China)

机构地区：[1]广州辅安检测技术有限公司,广东广州510555 [2]广东科贸职业学院,广东广州510430 [3]康正检测服务股份有限公司,广东广州510700

出　　处：《山东化工》2024年第24期138-140,共3页Shandong Chemical Industry

摘　　要：本方法主要研究对象为日化产品,用气相色谱仪对各种日化原料及化妆品成品中甲醇含量的测定;通过对各种产品的溶解、过滤、提取、净化、浓缩等方式以及合理化选择有机溶剂来测定甲醇含量的一种即高效、快捷、低污染且节约成本的测定方法;经过多次试验,样品通过气相色谱仪带氢火焰离子化检测器测试,外标法定量,得到的结论,证明方法是可行的;线性范围:0~200 mg/L,线性方程为y=0.1903x+0.0785,相关系数R^(2)=0.99972,取线性浓度高中低3个浓度点进行各6次加标回收,平均回收率为91.7%~99.1%;精密度RSD 2.12%~3.94%;按基线噪声的3倍所对应的待测物含量或质量浓度计算检出限为0.642 mg/kg;由各项参数以及现有的样品测试证明方法的实用性。The main research object of this method is daily chemical products.Gas chromatography is used to measure the methanol content in various daily chemical raw materials and finished cosmetics;Through dissolving,filtering,extracting,purifying,concentrating and other methods of various products and rationally selecting organic solvents to determine the methanol content;After many tests in this paper,the samples were tested by a gas chromatograph with hydrogen flame ionization detector and quantified by an external standard method.The conclusions obtained proved that the method was feasible;the linear range was 0~200 mg/L,the linear equation was y=0.1903x+0.0785,and the correlation coefficient R^(2)=0.99972.Three concentration points of high,medium,and low linear concentration were taken to carry out 6 spike recoveries each,and the average recovery rate was 91.7%~99.1%;The precision is rsd 2.12%~3.94%;The limit of detection is calculated as 0.642 mg/kg based on the content or mass concentration of the substance to be tested corresponding to 3 times the baseline noise;The practicality of the method is proved by various parameters and existing sample tests.See this article for details.

关 键 词：气相色谱法 日化产品 化妆品 原料 甲醇 

分 类 号：TQ658[化学工程—精细化工]