色谱 ›› 2019, Vol. 37 ›› Issue (10): 1129-1133.DOI: 10.3724/SP.J.1123.2019.03018

• 技术与应用 • 上一篇    

顶空-气相色谱-质谱法检测易燃液体及其分类

何坚刚, 万旺军, 吴刚, 王琛, 诸静, 袁从慧   

  1. 浙江省检验检疫科学技术研究院, 浙江 杭州 311215
  • 收稿日期:2019-03-15 出版日期:2019-10-08 发布日期:2020-12-11
  • 通讯作者: 何坚刚,Tel:(0571)83527165,E-mail:he_jiangang@hotmail.com.
  • 基金资助:
    质检总局科技计划应用技术项目(2017IK107).

Determination and classification of flammable liquids by headspace gas chromatography-mass spectrometry

HE Jiangang, WAN Wangjun, WU Gang, WANG Chen, ZHU Jing, YUAN Conghui   

  1. Zhejiang Academy of Science & Technology for Inspection & Quarantine, Hangzhou 311215, China
  • Received:2019-03-15 Online:2019-10-08 Published:2020-12-11
  • Supported by:
    Science and Technology Planning Project of General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China (No. 2017IK107).

摘要: 建立了一种利用顶空-气相色谱-质谱进行易燃液体的检测和分类的有效方法。以凹版油墨为模型样品体系,利用顶空-气相色谱-质谱鉴定了样品中的易挥发组分。考察了平衡温度、平衡时间和组分含量等特性参数。利用外标法测定了组分含量,结果显示该方法的相对标准偏差为0.88%~2.88%,加标回收率为92.8%~103.1%。采用该方法对多种实际样品进行了定性和定量分析,并用混合溶剂闪点预测模型计算了样品的闪点,与闪点实测值进行了比较。结果表明,该方法可用于易燃液体实际样品闪点的预测,实现化学品的分类,闪点预测值与实测值最大偏差仅为3.2℃。该方法为易燃液体实际样品的分类提供了一种新颖、高效和便捷的技术。

关键词: 顶空-气相色谱-质谱, 闪点, 分类, 易燃液体

Abstract: An effective method was established for the determination and classification of flammable liquids by headspace gas chromatography-mass spectrometry (HS-GC-MS). The volatile components, equilibrium temperature and equilibrium time of gravure ink were investigated. The volatile components of flammable liquids were identified by comparison with the standard mass spectrum databases, and quantified by the external standard method. The recoveries were in the range of 92.8%-103.1% with the relative standard deviations between 0.88% and 2.88%. The flash points of the samples were calculated by a prediction model and compared with the experimentally measured values. The results showed that the maximum deviation between the predicted and measured flash points was 3.2℃. This method provides a novel, efficient and convenient way for the classification of flammable liquids.

Key words: headspace gas chromatography-mass spectrometry (HS-GC-MS), flash point, classification, flammable liquids

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