Simultaneous Determination of 16 Polycyclic Aromatic Hydrocarbons and 31 n-Alkanes in High Petroleum Hydrocarbon Background Soil by Column-free Matrix Solid-phase Dispersion Coupled with Gas Chromatography-Tandem Mass Spectrometry
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Simultaneous Determination of 16 Polycyclic Aromatic Hydrocarbons and 31 n-Alkanes in High Petroleum Hydrocarbon Background Soil by Column-free Matrix Solid-phase Dispersion Coupled with Gas Chromatography-Tandem Mass Spectrometry
Journal of Instrumental AnalysisVol. 45, Issue 10, Pages: 2136-2143(2026)
YANG Tian-fu,LIN Ding,ZHANG Xue-rui,XIE Yi-bin,LEI Hao,ZHOU Xiao-hua.Simultaneous Determination of 16 Polycyclic Aromatic Hydrocarbons and 31 n-Alkanes in High Petroleum Hydrocarbon Background Soil by Column-free Matrix Solid-phase Dispersion Coupled with Gas Chromatography-Tandem Mass Spectrometry[J].Journal of Instrumental Analysis,2026,45(10):2136-2143.
YANG Tian-fu,LIN Ding,ZHANG Xue-rui,XIE Yi-bin,LEI Hao,ZHOU Xiao-hua.Simultaneous Determination of 16 Polycyclic Aromatic Hydrocarbons and 31 n-Alkanes in High Petroleum Hydrocarbon Background Soil by Column-free Matrix Solid-phase Dispersion Coupled with Gas Chromatography-Tandem Mass Spectrometry[J].Journal of Instrumental Analysis,2026,45(10):2136-2143.DOI: 10.12452/j.fxcsxb.26050905.
Simultaneous Determination of 16 Polycyclic Aromatic Hydrocarbons and 31 n-Alkanes in High Petroleum Hydrocarbon Background Soil by Column-free Matrix Solid-phase Dispersion Coupled with Gas Chromatography-Tandem Mass Spectrometry
An analytical method was established for the simultaneous determination of 16 polycyclic aromatic hydrocarbons(PAHs) and 31
n
-alkanes in soil with a high petroleum hydrocarbon background by column‑free matrix solid‑phase dispersion-assisted pressurized fluid extraction coupled with gas chromatography-tandem mass spectrometry(CFMSPD-PFE/GC-MS/MS).Usin
g single‑factor experiments,the optimal ratio of matrix solid‑phase dispersant(silica gel adsorbent) to sample was determined to be 0.5∶1-2∶1. Using an L₁₆(4⁴) orthogonal experiment,the optimized pressurized fluid extraction parameters were set as follows:extraction solvent:
n
‑hexane/acetone mixture(2∶1,volume ratio),extraction temperature:100 ℃,static extraction time:5 min,and number of extraction cycles:2. The results indicate that PAHs and
n
-alkanes have favorable linearity within the concentration ranges of 1.0-250 μg/L and 10-2 500 μg/L,respectively,with correlation coefficients
r
≥0.995 4. The limits of detection were 0.08-0.31 μg/kg and 1.07-3.19 μg/kg,while the corresponding limits of quantification were 0.32-1.24 μg/kg and 4.28-12.8 μg/kg. The average recoveries at three spiked concentration levels ranged from 77.1% to 111%,with relative standard deviations of 2.4-13%. The developed method was applied to the determination of 30 soil samples with petroleum hydrocarbon contents of 865-2 286 mg/kg. The mass concentrations of PAHs and
n
-alkanes were in the ranges of 2.93-1.50×10
5
μg/kg and 20.8-5.76×10
3
μg/kg,respectively. With the advantages of simple operation,short pretreatment procedure,and high sensitivity,the method proposed herein is suitable for the simultaneous analysis of 16 PAHs and 31
n
-alkanes in soil with high petroleum hydrocarbon background.
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