石油炼制与化工 ›› 2023, Vol. 54 ›› Issue (1): 128-134.

• 分析与评定 • 上一篇    下一篇

利用TLC-FID对土壤中石油烃进行分离测定

李翔,曾令仪,王乾,崔树阳,蔡凌霄,李怿,白正伟   

  1. 中石化炼化工程(集团)股份有限公司洛阳技术研发中心
  • 收稿日期:2022-03-30 修回日期:2022-05-13 出版日期:2023-01-12 发布日期:2023-01-16
  • 通讯作者: 李翔 E-mail:lixiang.segr@sinopec.com
  • 基金资助:
    国家重点研发计划

SEPARATION AND DETERMINATION OF PETROLEUM HYDROCARBONS IN SOIL BY TLC-FID METHOD

  • Received:2022-03-30 Revised:2022-05-13 Online:2023-01-12 Published:2023-01-16

摘要: 利用棒状薄层色谱-氢火焰离子化检测器(TLC-FID)可实现对土壤样品中石油烃组分的分离测定。通过对一系列馏分油样品进行TLC-FID分析,发现该方法对沸点大于300 ℃的馏分具有较好的适用性,而低沸点馏分则会发生不同程度的损失,样品损失主要发生在一次展开阶段。此外,结合TLC-FID分析结果和石油烃(C10~C40)总含量的测定结果,研究石油烃污染土壤在经不同量的过硫酸钠化学氧化处理后各类烃组分含量的变化,发现过硫酸钠主要作用于土壤中的饱和烃和芳烃,而对胶质和沥青质没有明显的脱除效果。

关键词: 棒状薄层色谱-氢火焰离子化检测器, 石油烃, 分离测定, 化学氧化

Abstract: The separation and determination of petroleum hydrocarbon components in soil samples can be realized by thin layer chromatography with hydrogen flame ionization detector (TLC-FID). TLC-FID analysis of a series of distillate samples showed that the sample loss occurred mainly in the first development stage. The method has good applicability to the fractions with boiling point greater than 300 ℃, while the samples with low boiling point will have different degrees of loss. In addition, combined with TLC-FID analysis and determination of the total content of the petroleum hydrocarbon (C10—C40) , the changes of hydrocarbon components contents in petroleum hydrocarbon contaminated soil after chemical oxidation treatment with different amounts of sodium persulfate were studied. The results showed that sodium persulfate mainly acted on saturated hydrocarbon and aromatic hydrocarbon in soil, but had no obvious removal effect on colloid and asphaltene.

Key words: thin layer chromatography-hydrogen flame ionization detector, petroleum hydrocarbons, separation and determination, chemical oxidation