Dissipation and Dietary Risk Assessment of the Fungicide Pyraclostrobin in Apples Using Ultra-High Performance Liquid Chromatography-Mass Spectrometry

The fungicide pyraclostrobin is the main measure used to control apple alternaria blotch in production. To evaluate the potential dietary risks for consumers, the dissipation and terminal residues of pyraclostrobin were investigated using ultra-high performance liquid chromatography-mass spectrometr...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2024-09, Vol.29 (18), p.4434
Main Authors: Wang, Bin, Shi, Lei, Ren, Pengcheng, Qin, Shu, Li, Jindong, Cao, Junli
Format: Article
Language:English
Subjects:
Accuracy
Apple
Apples
Calibration
Carbamates - analysis
Chromatography
Chromatography, High Pressure Liquid - methods
Consumers
dissipation
Food Contamination - analysis
Fruit industry
Fruits
Fungicides
Fungicides, Industrial - analysis
High performance liquid chromatography
Liquid Chromatography-Mass Spectrometry
Malus - chemistry
Mass spectrometry
Pesticide Residues - analysis
Pesticides
pyraclostrobin
Risk Assessment
Scientific imaging
Solvents
Strawberries
Strobilurins - analysis
Tandem Mass Spectrometry - methods
terminal residues
Toxicity
UHPLC–MS/MS
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Summary:The fungicide pyraclostrobin is the main measure used to control apple alternaria blotch in production. To evaluate the potential dietary risks for consumers, the dissipation and terminal residues of pyraclostrobin were investigated using ultra-high performance liquid chromatography-mass spectrometry (UHPLC-MS/MS). Pyraclostrobin in apples was extracted by acetonitrile with 2% ammonia and then purified using primary secondary amine (PSA) and graphitized carbon black (GCB). The method showed good linearity within the concentration range of 0.005-0.1 mg L , with a coefficient of determination (R ) ≥ 0.9958. The recoveries ranged from 96.0% to 103.8%, with relative standard deviations (RSDs) between 0.8% and 2.3%. The limit of quantification (LOQ) was 0.01 mg kg . Pyraclostrobin dispersible oil suspension was applied in 12 apple fields across China according to good agricultural practices (GAPs). In Beijing and Shandong, the dissipation of pyraclostrobin followed first-order kinetic equations, with a half-life of 11 days. The terminal residues ranged from
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules29184434