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Poster Presentations
Day 2, June 23（Mon.）
Room P (Maesato East, Foyer, Ocean Wing)
- 2P-AM-39
Residue Characteristics and Analytical Assessment of Pesticides in Heracleum moellendorffii Hance Using Mass Spectrometry
(1Konkuk Univ., 2Kangwon Nat'l Univ.)
oHa-Jin Son1, Ji-Woo Yu1,2, Eun-Song Choi2, Jung-Hoon Lee2, Hui-Yeon Ahn1, Geon-Woo Park1, Ji-Won Shin1, Ji-Yeon Lee1, Min-Ho Song2, Ji-Ho Lee2
Understanding residue patterns of pesticides in agricultural products is essential to ensure food safety. However, research on pesticide residues in medicinal crops such as Heracleum moellendorffii Hance is limited. This study investigated the residual characteristics of four widely used pesticides in plants: hexaconazole, etofenprox, flonicamid, and trifloxystrobin. Multiple reaction monitoring was used for quantification, revealing characteristic fragmentation patterns such as heteroaromatic ring ionization and ether/methoxyimino bond cleavage. Extraction method was validated for linearity, accuracy, precision, and limit of quantitation. Hexaconazole exhibits high stability and lipophilicity, leading to strong adsorption in soil and limited mobility within plant matrices. This characteristic corresponds to the relatively low residue concentration range of 0.21-4.07 mg/kg. Etofenprox has low water solubility, and a high partition coefficient reflected in the residue levels of 2.69-38.63 mg/kg. Flonicamid possesses moderate polarity and rapid translocation within plant tissues, resulting in residue concentrations ranging from 0.5-18.22 mg/kg. Trifloxystrobin demonstrates strong photostability and lipophilicity, leading to environmental persistence and the highest residue range of 2.84-61.91 mg/kg. This study provides valuable insights into the degradation pathways. These findings contribute to the development of more effective monitoring strategies for food safety and environmental protection.