摘要
建立了紫外分光光度计法测定生物柴油中游离甘油含量的方法。通过对生物柴油中的甘油进行过氧化,生成乙醛,再加入乙酰丙酮与生成的乙醛反应,通过紫外分光光度计在414nm波长处测定生成的黄色化合物量计算样品中甘油含量。该方法简单、快速、经济。验证试验和实际样品检测试验表明:该方法精密度高、准确度好,是一种可行的替代方法。
An UV spectrophotometric method for determination of free glycerol in biodiesel was built up. This procedure based on periodate oxidation of glycerol, leading to preparation of acetaldehyde, on reaction with acetylacetone and on spectrophotometric measurement at 414 nm is illustrated. This method is simple, quick and economic. Data related to recovery tests and analyses of real samples show that the method is a viable alternative method with high precision and good accuracy.
出处
《粮食与食品工业》
2012年第1期53-55,共3页
Cereal & Food Industry
关键词
生物柴油
游离甘油测定
紫外分光光度计
biodiesel
determination of free glycerin
UV spectrophotometer
