摘要
建立了管式炉-离子色谱联用测定车用柴油中硫含量的分析方法。采用管式炉高温燃烧、双氧水氧化将样品中的硫化物转化成硫酸根离子的形式,以离子色谱分离分析,测定车用柴油中的硫含量。在优化的色谱条件下,离子色谱硫检出限为0.11μg/g,在硫质量分数0.44~222.22μg/g范围内线性关系良好,精密度和重复性的相对标准偏差均小于5%,回收率在95.50%~103.60%之间,相对标准偏差为2.29%,符合分析方法要求。该方法与现行标准方法紫外荧光法之间的差异不大,适用于车用柴油中的硫含量检测。
An analytical method using tube furnace combustion-ion chromatography for determination of sulfur content in diesel fuel was established.Sample was burned in tube furnace and the sulfur compounds were transformed into SO 2-4 by hydrogen peroxide,the sulfur was then determined by ion chromatography.The detection limit of sulfur content is 0.11μg g.The calibration curve is linear within sulfur content of 0.44-222.22μg g(r=0.999 8).Precision and accuracy tests showed that the relative standard deviation is less than 5%,with the recovery rates between 95.50%and 103.60%and the RSD of 2.29%.The result by this method is very close to that by the UV fluorescence method used in the current national standard.It is suitable for sulfur content detection in diesel fuel.
作者
王硕
段卫宇
吕焕明
邱兆军
Wang Shuo;Duan Weiyu;LüHuanming;Qiu Zhaojun(Liaoning Inspection Institute of Product Quality Supervision,Shenyang 110144;National Center of Petroleum Quality Supervision Inspection(Shenyang);Liaoning Province Industrial Lubricating Oil Monitoring Engineering Laboratory)
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2018年第10期106-109,共4页
Petroleum Processing and Petrochemicals
基金
辽宁省自然科学基金指导计划、辽宁省自然科学基金计划重点项目(20170520108)。
关键词
管式炉
离子色谱法
车用柴油
硫含量
tube furnace
ion chromatography
diesel fuel
sulfur content
