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| Determination of ten plant growth regulators in vegetable oils by improved QuEChERS-high performance liquid |
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| DOI：10.12166/j.zgyz.1003-7969/2020.03.011 |
| KeyWord:QuEChERS EMR-Lipid high performance liquid chromatography-tandem mass spectrometry vegetable oil plant growth regulator |
| FundProject:国家重点研发计划资助（2018YFC1602800） |
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| Abstract: |
| A rapid method for the simultaneous determination of ten plant growth regulators in vegetable oils was developed by using high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) based on modified QuEChERS sample pretreatment method.Samples were extracted with acidic acetonitrile，and cleaned up by Enhanced Matrix Removal Lipid (EMR-Lipid).The analytes were detected in the multi-reaction monitoring (MRM) mode and quantified by the external standard method.The calibration curves of ten plant growth regulators were linear well in the corresponding concentration ranges of 1-100 μg/L, with correlation coefficient（r） of 0.991-0.998. The limits of detection and quantification were 0.014-0.188 μg/kg and 0.048-0.625 μg/kg, respectively. The average recoveries of ten plant growth regulators ranged from 70.2% to 94.7% with relative standard deviations (RSDs) of 1.2%-10.2%.The method was quick,accurate,and sensitive, and was suitable for the determination of ten plant growth regulators in vegetable oils. |
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