AI Article Synopsis
- A new method was created to detect residual pesticides in vegetables using liquid and gas chromatography-tandem mass spectrometry (LC-MS/MS and GC-MS/MS), allowing analysis of over 200 compounds in under 30 minutes.
- Recovery rates for most compounds were between 70-120%, with a relative standard deviation under 20%, indicating reliable results.
- The method also evaluated measurement uncertainty, showing a safety range for detected pesticides in agricultural products from 0.00003% to 2.87240%, enhancing food safety assessments.
Article Abstract
A method was developed to analyze residual pesticides in various vegetables using liquid chromatography-tandem mass spectrometry (LC-MS/MS) and gas chromatography-tandem mass spectrometry (GC-MS/MS). A method can analyze over 200 individual compounds, selectively separate peaks within 30 min, and meet various criteria such as those by the Codex Alimentarius Commission (CODEX). Most compounds showed recovery rates between 70 and 120%, and a relative standard deviation was within 20%. Measurement uncertainty, considering various influencing factors such as instrument precision, method sensitivity, experimental conditions, sample handling, and analytical procedures, was meticulously calculated. The expanded uncertainties of cross-checking 33 available pesticides ranged from 10.1 to 26.2 μg/kg at a confidence level of approximately 95%. Risk assessment of detected pesticides in agricultural products indicated a safety range of 0.00003-2.87240%. The developed method effectively analyzes diverse compounds simultaneously, contributing to agricultural product safety.
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| http://dx.doi.org/10.1021/acs.jafc.4c01992 | DOI Listing |
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