Development of A Portable Gas Chromatograph-Micro Photoionization Detector System and Its Application in Online Detection of Volatile Organic Compounds
10.19756/j.issn.0253-3820.251106
- VernacularTitle:便携式气相色谱-微型光离子化检测器系统的研制及在线应用
- Author:
Xun WEN
1
;
Hao-Nan XU
;
Li-Li SHI
;
Xiang-Hong WANG
;
Xiao-Bing PANG
Author Information
1. 浙江工业大学环境学院,杭州 310014
- Keywords:
Volatile organic compounds;
Portable gas chromatograph;
Micro photoionization detector;
Online analysis
- From:
Chinese Journal of Analytical Chemistry
2025;53(10):1615-1622
- CountryChina
- Language:Chinese
-
Abstract:
In recent years,micro photoionization detectors(μPID),with their rapid response speed and excellent sensitivity,have attracted widespread attention in both scientific research and industry.This study developed a portable gas chromatograph based on μPID technology(GC-μPID),and examined its key performance characteristics such as reproducibility,sensitivity,and online analytical capability.The results showed that the method's relative standard deviation(RSD)was controlled within 2.7%,demonstrating good reproducibility;for the standard curves of 27 kinds of volatile organic compounds(VOCs),the linearity was excellent(R2≥0.99),with detection limits of≤10 μg/m3 and benzene series compounds reaching detection limits as low as 0.5 μg/m3.In field applications at an industrial park,this method successfully identified and quantified 17 kinds of VOCs,accurately capturing their diurnal concentration variations.The results above validated that the method developed here had the capability of onsite real-time monitoring and provided an effective tool for in situ monitoring atmospheric pollutants.
