摘要
现代社会已经进入大量消耗能源的阶段,加上人们对环境的重视程度越来越高,可再生能源必然成为大众关注的焦点。生物柴油由于其原料具有广泛性和可再生性两大特点,近年来在世界各地得到广泛应用。生物柴油虽然得到各行各业的青睐,但也会带来一些不好的影响。由于生物柴油中含有少量的无机物,含量虽然少,但其中某些微量元素对生物柴油使用性能有着极大的影响,比如会腐蚀发动机中金属部件、会造成催化剂中毒和可燃物不完全燃烧等有害影响。大量实验数据表明,Na、K、Ca、Mg这4种元素会促进发动机中不溶性化合物的形成而加速零件的磨损,同时也会加大过滤器的堵塞概率。因此,建立电感耦合等离子体发射光谱法测定生物柴油中Na、K、Ca、Mg元素含量就非常重要。实验结果表明,该方法对4种待测元素的加标回收率在97%~110%之间,相对标准偏差为0.32%~0.85%(n=6)。方法操作简单、快速、重复性好,适用于生物柴油中Na、K、Ca和Mg元素的测定。
With the advent of the stage of massive energy consumption,people pay more and more attention to the environment,and renewable energy is bound to become the focus of attention.Biodiesel has been widely used all over the world in recent years because of universality and reproducibility of its raw materials.Although biodiesel is favored by all walks of life,it will also bring some bad effects.Because biodiesel contains a small amount of inorganic matter,although its content is small,but some trace elements in inorganic matter have a great impact on its performance,such as corrosion of metal parts in the engine,catalyst poisoning and incomplete combustion of fuel and other harmful effects.A large number of experimental data show that Na,K,Ca,and Mg,these four elements will not only promote the formation of insoluble compounds in the engine and promote the wear of parts,but also increase the blockage probability of the filter.Therefore,it is very important to establish a method for the determination of Na,K,Ca and Mg in biodiesel by inductively coupled plasma emission spectrometry.The experimental results showed that the spiked recoveries of the four elements were in the range of 97%-110%with the relative standard deviations of 0.32%-0.85%(n=6).The method is simple,rapid and reproducible,suitable for the determination of sodium,potassium,calcium and magnesium in biodiesel.
作者
王彦霞
林海
叶金燕
唐斌
徐金龙
李展江
杨树洁
WANG Yan-Xia;LING Hai;YE Jin-Yan;TANG Bin;XU Jin-Long;LI Zhan-Jiang;YANG Shu-Jie(Zhanjiang Entry-Exit Inspection&Quarantine Bureau,Zhanjiang 524000)
出处
《中国口岸科学技术》
2021年第12期58-62,共5页
China Port Science and Technology
基金
海关总署科研项目(2021HK239)。
