LIU Li,GE Jia-li,YU Shi-yu,HOU Xiang-yu,CHEN Yi-yi,DU Bi-bai,ZENG Li-xi.Determination of 40 Vulcanization Accelerators in Soil by Ultrasonic Extraction/HPLC-MS/MS[J].Journal of Instrumental Analysis,2025,44(08):1612-1619.
LIU Li,GE Jia-li,YU Shi-yu,HOU Xiang-yu,CHEN Yi-yi,DU Bi-bai,ZENG Li-xi.Determination of 40 Vulcanization Accelerators in Soil by Ultrasonic Extraction/HPLC-MS/MS[J].Journal of Instrumental Analysis,2025,44(08):1612-1619. DOI: 10.12452/j.fxcsxb.25021180.
Determination of 40 Vulcanization Accelerators in Soil by Ultrasonic Extraction/HPLC-MS/MS
An analytical method based on ultrasonic-assisted extraction and high-performance liquid chromatography-tandem mass spectrometry(HPLC-MS/MS) was developed to simultaneously determine 40 vulcanization accelerators(VAs) across eight categories in soil samples. To optimize the extraction process,the recoveries of different extraction solvents(methanol,acetonitrile,dichloromethane,ethyl acetate and
n
-hexane) and extraction time(10 to 35 min) were compared. Methanol was identified as the optimal extraction solvent,with an extraction time of 20 min. Soil samples were extracted using methanol under ultrasonic assistance followed by nitrogen-evaporation to a final volume of 1 mL,and separated using an XBridge BEH C
18
column. Qualitative and quantitative analyses were performed using multiple reaction monitoring(MRM) mode. The 40 target compounds exhibited good linearity within the concentration range of 0.01-200 ng/mL,with correlation coefficients(
r
2
) better than 0.99. The method detection limits ranged from 0.007 11 to 10.8 ng/g,and the method quantification limits ranged from 0.023 7 to 35.9 ng/g. At spiked levels of 150 and 500 ng/g,the average recoveries ranged from 30.2% to 143%,with relative standard deviations(RSDs) less than 20%(
n
=3). In actual soil samples,36 VAs were detected,with total concentrations ranging from 10.7 to 361 ng/g. Notably,29 compounds were identified in soil for the first time. This method is simple,sensitive,and well-suited for the determination of 40 VAs in soil,providing valuable technical support for research on VA pollution in soil.
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