高温气相色谱法测定LAB中PPO含量

doi:10.3969/j.issn.2097-2806.2026.05.015

Abstract

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

CLC Number:

TQ423

Aizhong Huang, Yingxue Li, Dong Liu, Lijun Chen, Xiaoyu Dong, Hong Cao. Determination of PPO content in LAB by high-temperature gas chromatography[J].China Surfactant Detergent & Cosmetics, 2026, 56(5): 681-686.

Figures/Tables 6

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References 15

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名称	PPO
保留时间/min	15.695
线性方程	y=4 838 926.86x-39 274.86
相关系数R²	0.999 6
线性范围/ （g/L）	0~0.856
检出限/ （μg/L）	2.33
定量限/ （μg/L）	7.00

样品	峰面积	实测质量浓度 /（g/L）
a	2 110 743	0.444
b	2 489 196	0.523
c	2 104 568	0.443
d	2 144 939	0.451
e	2 212 806	0.465

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

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