摘要
利用正己烷溶剂聚沉解决乙酸乙酯与水性涂料形成的乳浊液问题,从而建立水性涂料中6种苯系物气相色谱法准确定量的检测方法。水性涂料加入乙酸乙酯等萃取剂后,会形成均一稳定的乳浊液,无法通过0.22μm的滤膜过滤。通过加入适当比例正己烷溶剂来破坏涂料的稳定体系,使涂料中胶性物质与固体颗粒聚沉,溶液体系澄清。苯系物在0.1~50μg/mL范围内线性关系良好,相关性为0.999,检出限为0.027~0.17 mg/kg,准确度为90.8%~109.5%,精密度为2.6%~7.4%。该方法相比国标更加绿色环保,更加定量准确和稳定,可用于实验室实际样品检测。
Using n-hexane solvent precipitation to solve the problem of emulsion formation between ethyl acetate and water-based coatings,an accurate and quantitative detection method for six benzene series compounds in water-based coatings by gas chromatography was established.After adding extractants such as ethyl acetate to water-based coatings,a homogeneous and stable emulsion will be formed,which cannot pass through 0.22μm filter membrane filtration.By adding an appropriate proportion of n-hexane solvent to disrupt the stable system of the coating,the adhesive substances in the coating can agglomerate with solid particles,thus the solution system can be clarified.The linear relationship of benzene derivatives within the range from 0.1 to 50μg/mL is good,with a correlation of 0.999,a detection limit of 0.027-0.17 mg/kg,an accuracy of 90.8%-109.5%,and a precision of 2.6%-7.4%.This method is more environmentally friendly,accurate and stable in quantification compared to the national standard,and can be used for actual sample detection in the laboratory.
作者
杜谦
李京亚
詹青卫
王彩虹
Du Qian;Li Jingya;Zhan Qingwei;Wang Caihong(Anhui Product Quality Supervision&Inspection Research Institute,Hefei 230000 China;Fuyang Normal University,Fuyang 236037,China)
出处
《云南化工》
CAS
2024年第5期73-76,共4页
Yunnan Chemical Technology
基金
阜阳师范大学信息工程学院自然科学研究(一般)项目(FXG2020ZY02)
安徽省大学生创新训练项目(s20211361901)。
关键词
溶剂聚沉
气相色谱仪
苯系物
水性涂料
Solvent Precipitation
Gas Chromatograph
Benzene Derivatives
Waterborne Coatings
作者简介
杜谦(1991-),男,河南南阳人,助理工程师,主要从事化学仪器分析。E-mail:996024469@qq.com;通讯作者:王彩虹(1992-),女,安徽阜阳人,硕士研究生,主要从事植物天然活性成分提取及功能特性的研究。E-mail:chwang1010@163.com。
