摘要
采用碱中和法测定松脂中松节油含量并对其进行改进。考察2种碱及蒸馏回流时间对测定结果的影响,用气相色谱法分析松脂油成分,对蒸馏的松节油进行比较验证。结果表明,以5%氢氧化钠溶液代替80%甘油溶液作为松节油含量测定的反应物,回流3~4h,测定结果与标准LY/T1355—2010方法差值小于1%,相对误差小于1.90%。本实验方法操作简单,易于清洗,能满足测定要求。
The content of turpentine in rosin was determined and improved by alkali neutralization method. The effects of two kinds of bases and distillation reflux time on the determination were investigated. Analysis and comparison ofrosinand distilled turpentine by gas chromatography,then compared and verified of distilled turpentine.The results showed that the difference between the determination result and the standard LY/T 1355—2010 method was less than 1% and the relative error was less than 1.90% when 5% sodium solution hydroxide was used instead of 80% glycerol solution as the reactant for the determination of turpentine content in rosin, reflux 3~4 h.The experimental method is simple to operate, easy to clean and can meet the requirements of determination.
作者
岑潮锋
李桂珍
陈海燕
梁忠云
黄宇平
CEN Chaofeng;LI Guizhen;CHEN Haiyan;LIANG Zhongyun;HUANG Yuping(Wuzhou Huangpu Chemical Pharmaceutical Co.,Ltd.,Wuzhou,Guangxi 543000,China;Guangxi Zhuang Autonomous Region Forestry Research Institute,Nanning,Guangxi 530002,China;Wuzhou Finjet Chemical Industries,Co.,Ltd.,Wuzhou,Guangxi 543000,China)
出处
《热带农业科学》
2022年第5期90-93,共4页
Chinese Journal of Tropical Agriculture
基金
广西林业科技推广示范项目(No.{2021}GT17)。
关键词
松脂
松节油
含量
rosin
turpentine
content