본 연구의 목적은 UPLC-MS/MS와 GC-MS/MS를 사용하여 수산물 중 잔류농약 동시다성분 분석을 위한 분석법을 개발하여 검증을 실시하였다. 분석을 위한 농약(살충제, 살균제, 제초제)을 위해정보 등에 따라서 우선순위를 선정하였고 광어, 장어, 새우 및 조개에 대한 검증을 진행하였다. QuEChERS (quick, easy, cheap, effective, rugged, and safe)를 기반으로 전처리법을 개발하였고, 개발된 시험법은 CODEX CAC/GL-71 가이드라인에 따라서 정확성, 정밀성, 직선성, 정량한계에 대한 검증을 통하여 유효성을 확인하였다. 본 실험에서의 정량한계는 10 μg/kg 미만 수준이었으며, 정량한계를 포함하는 표준시료에서 얻어진 검량선의 상관계수(r2) 또한 모두 가이드라인에 적합한 수준이었다. 수산물 시료에 대한 대상 물질의 평균 회수율과 변동 계수는 각각 62.4~125%, <20%로 확인되었다. 개발된 분석법을 적용하여 국내 시장에서 수산물을 구매하여 모니터링 한 결과 UPLC-MS/MS의 경우 총 78개의 샘플 중 10개의 샘플(12.8%)에서 검출되었고, GC-MS/MS의 경우 총 79개의 샘플 중 패류에서 트리플루랄린 67 μg/kg이 검출되었다. 따라서, 개발된 잔류농약 분석법은 수산물 중 잔류농약을 분석하는데 적합하며, 잔류농약에 대한 지속적인 잔류실태조사에 활용되어 수산물 중 농약에 대한 안전관리에 기여할 것으로 판단된다.
The aim of this study was developed and optimized an analytical method for the simultaneous determination of multi-pesticide residues in fishery products using ultra performance liquid chromatography?tandem mass spectrometry (UPLC?MS/MS) and gas chromatography?tandem mass spectrometry (GC?MS/MS). We selected pesticides (insecticide, fungicides, and herbicides) and determined their residue concentrations in fish (flatfish and eel), shrimp and clam. The samples were prepared according to the modified QuEChERS (quick, easy, cheap, effective, rugged, and safe) procedure. Matrix-matched calibrations were carried out at three different spiking levels in flatfish, eel, shrimp and clam. The validation procedure was performed to determine the accuracy, precision, limits of detection, and limit of quantification (LOQ) according to the Codex guidelines (CAC/GL-71). Consequently, the proposed method is satisfactory in terms of accuracy (recoveries between 62.4 and 125%), precision (relative standard deviation below 20%). LOQ was below 10 μg/kg. The proposed method was applied to investigate the pesticide residue levels of fresh fish and shrimp samples (n = 78) obtained from domestic markets in Korea. As a result, in case of UPLC-MS/MS, 10 samples was positive (12.8%) for the 66 targeted pesticides. Results of GC-MS/MS, in real sample (n=79) analysis, trifluralin was detected at 67 μg/kg in one Manila clam sample. Based on our results, the proposed method was satisfactory for pesticide residue determination in aquatic animal products.
목차
Table of contentsⅠ. Introduction 1Ⅱ. Material and Method 51. Reagents, standards, and materials 52. Preparation of pesticide standard solutions 53. Sample preparation 63.1. UPLC-MS/MS 63.2. GC-MS/MS 74. Instruments 84.1. UPLC-MS/MS conditions 84.2. GC-MS/MS conditions 145. Method Validation 18Ⅲ. Results and discussion 201. Optimization of instrument conditions 201.1. Optimization of UPLC-MS/MS conditions 201.2. Optimization of GC-MS/MS conditions 222. Optimization of extraction and purification 232.1. UPLC-MS/MS method 232.2. GC-MS/MS method 243. Method Validation 253.1. Method validation of UPLC-MS/MS 253.2. Method validation of GC-MS/MS 334. Application and real sample monitoring 414.1. UPLC-MS/MS 414.2. GC-MS/MS 42Ⅳ. Conclusions 45Ⅴ. Reference 46Abstract 57