气相色谱-串联质谱法测定船用燃料油中的9种含氮化合物

发布时间：2018-01-20 19:29

本文关键词： 船用燃料油含氮化合物气相色谱-串联质谱　出处：《分析测试学报》2017年04期 　论文类型：期刊论文

【摘要】：采用气相色谱-串联质谱(GC-MS/MS)法建立了船用燃料油中9种含氮化合物的测定方法。样品以SPE小柱净化去除饱和烃后,通过二氯甲烷-乙醇(5∶1)溶液洗脱。用DB-5MS(30 m×0.25 mm×0.25μm)色谱柱分离,采用多反应监测(MRM)模式,外标法定量。结果表明,9种含氮化合物的色谱分离效果良好,在浓度1~1 000 mg/kg范围内与峰面积均呈线性关系。方法的定量下限(S/N=10)为0.18~0.43 mg/kg,平均加标回收率为85.3%~121.6%,相对标准偏差(RSD,n=6)均不大于6.8%。结果表明该方法快速可靠、准确简便,适用于船用燃料油中9种含氮化合物的检测。
[Abstract]:A gas chromatography-tandem mass spectrometry (GC-MS / MS) method was developed for the determination of nine nitrogen-containing compounds in marine fuel oil. The samples were purified with SPE column to remove saturated hydrocarbons. It was eluted in 5: 1 dichloromethane-ethanol solution and separated by DB-5MS(30 m 脳 0.25 mm 脳 0.25 渭 m column. The results showed that the chromatographic separation of nine nitrogen-containing compounds was effective. There was a linear relationship between peak area and peak area in the concentration range of 1 000 mg/kg. The lower limit of the method was 0.18 ~ 0.43 mg/kg. The average recovery rate was 85.3% and the relative standard deviation was less than 6.8.The results showed that the method was rapid, reliable, accurate and simple. It is suitable for the determination of 9 nitrogen compounds in marine fuel oil.
【作者单位】：广东出入境检验检疫局;
【基金】：国家重点研发计划项目(2016YFF0203705) 广东检验检疫局科研项目(2016GDK35)
【分类号】：TE626.2;O657.63
【正文快照】： 船用燃料油中高含量的氮元素会极大地影响油品的质量,使催化剂失活[1],影响燃料油品的质量及气味[2],促使胶质生成[3],排放形成酸雨[4],并且含有氮的多环芳烃有致癌作用[5],所以对船用燃料油中氮含量的控制很有必要。船用燃料油中含氮量高,一方面会造成其氧化稳定性差,沉渣较

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