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日用化学工业（中英文）

日用化学工业（中英文） ›› 2026, Vol. 56 ›› Issue (5): 681-686.doi: 10.3969/j.issn.2097-2806.2026.05.015

• 分析与检测 • 上一篇    下一篇

高温气相色谱法测定LAB中PPO含量

黄爱忠(),李映雪,刘冬,陈丽君,董小宇,曹红   

  1. 中国石化集团金陵石油化工有限责任公司，江苏 南京 210033
  • 收稿日期:2025-11-06 修回日期:2026-04-29 出版日期:2026-05-22 发布日期:2026-06-22

Determination of PPO content in LAB by high-temperature gas chromatography

Aizhong Huang(),Yingxue Li,Dong Liu,Lijun Chen,Xiaoyu Dong,Hong Cao   

  1. SINOPEC Jinling Petrochemical Corporation, Jiangsu, Nanjing 210033, China
  • Received:2025-11-06 Revised:2026-04-29 Online:2026-05-22 Published:2026-06-22
  • Contact: *E-mail: huangaz.jlsh@sinopec.com.

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摘要：

采用高温气相色谱仪冷柱头进样结合外标定量法建立了以烷基苯（LAB）为主体介质的液体闪烁体中第一闪烁体2, 5-二苯基恶唑（PPO）含量的分析方法。试验结果表明，PPO在0~0.856 g/L区间内，相关系数R2高于0.99，线性关系良好。本方法的检出限为2.33 μg/L，定量限为7.00 μg/L，回收率为97.0%~100.1%。本方法操作简单，具备较高的灵敏度与准确性，结果稳定性好，检测数据可靠，适用于以LAB为主体介质的液体闪烁体中PPO含量的测定，为以LAB为主体介质的液体闪烁体质量控制提供了有力分析手段。

关键词: 高温气相色谱仪, 液体闪烁体, 烷基苯（LAB）, 2, 5-二苯基恶唑（PPO）, 标准曲线

Abstract:

An analytical method for determining the content of primary scintillator 2, 5-diphenyloxazole （PPO） in liquid scintillators composed primarily of linear alkylbenzene （LAB） was established using a high-temperature gas chromatograph with a cold column inlet and an external standard quantification method. The results demonstrate excellent linearity for PPO in the concentration range of 0-0.856 g/L, with correlation coefficients R2 > 0.99. The limit of detection of the method is 2.33 μg/L, the limit of quantification is 7.00 μg/L, and the recovery rate ranges from 97.0% to 100.1%. This method is straightforward, high sensitivity and accurate, provides stable results, and yields reliable data. It is suitable for the quantitative analysis of PPO in LAB-based liquid scintillators, offering a robust analytical method for quality control of LAB-formulated liquid scintillation systems.

Key words: high-temperature gas chromatograph, liquid scintillator, LAB, PPO, calibration curve

中图分类号: 

  • TQ423