Dissipation kinetics, pre-harvest residue limits, and hazard quotient assessments of pesticides flubendiamide and fluopicolide in Korean melon (Cucumis melo L. var. makuwa) grown under regulated conditions in plastic greenhouses
| Autor: | Ji Hoon Jeong, Md. Musfiqur Rahman, Sung-Woo Kim, Md. Humayun Kabir, Jung Ah Do, Hyung Suk Chung, Ho-Chul Shin, Moon Ik Chang, Byung-Joon Chang, Han Sol Lee, Jae-Han Shim, A. M. Abd El-Aty |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Health Toxicology and Mutagenesis Greenhouse 010501 environmental sciences Risk Assessment 01 natural sciences High-performance liquid chromatography chemistry.chemical_compound Cucumis melo Republic of Korea Botany Environmental Chemistry Ecotoxicology Sulfones Chromatography High Pressure Liquid 0105 earth and related environmental sciences biology Solid Phase Extraction Pesticide Residues General Medicine Pesticide Environment Controlled biology.organism_classification Pollution Hazard quotient Kinetics 010602 entomology Horticulture Korean melon chemistry Fruit Benzamides Fluopicolide Plastics Cucumis |
| Zdroj: | Environmental Science and Pollution Research. 24:22241-22250 |
| ISSN: | 1614-7499 0944-1344 |
| DOI: | 10.1007/s11356-017-9880-x |
| Popis: | The dissipation kinetics, pre-harvest residue limits, and hazard quotient (HQ) assessments of the pesticides flubendiamide and fluopicolide were conducted for Korean melon (Cucumis melo L. var. makuwa) cultivated at two different sites. A single extraction and cleanup procedure was carried out using acetone (partitioned with dichloromethane) and amino solid-phase extraction cartridges, respectively. Residue analysis was performed by HPLC with ultraviolet detection. Both pesticides showed excellent linearity with correlation coefficients of 0.9999 and 0.9996 for flubendiamide and fluopicolide, respectively. The accuracy (expressed as recovery %) at three spiking levels was 92.0-103.6 and 82.8-105.3%, and the precision (expressed as relative standard deviation) was 1.7-3.4 and 2.7-5.3% for flubendiamide and fluopicolide, respectively. The initial residues of flubendiamide/fluopicolide were 0.326/0.376 and 0.206/0.298 mg/kg at sites 1 and 2, respectively. These amounts were substantially lower than the maximum residue limits (MRLs = 1 and 0.5 mg/kg for flubendiamide and fluopicolide, respectively) established by the Korean Ministry of Food and Drug Safety. The half-lives of flubendiamide were 5.8 and 6.5 days, and those of fluopicolide were 6.7 and 9.1 days at sites 1 and 2, respectively. The shorter half-lives were attributed to seasonal variations (higher temperatures) and enzymatic and metabolic profiling. The risk assessment HQs of flubendiamide were 0.217/0.249 on day 0, which decreased to 0.102/0.168 on day 5, and to 0.065/0.88 on day 10; the HQ values for fluopicolide were 0.029/0.042, 0.022/0.025, and 0.010/0.019 on day 0, day 5, and day 10, for sites 1/2, respectively. From this data, we concluded that the fruits could be consumed safely. |
| Databáze: | OpenAIRE |
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