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QuEChERS 전처리법과 GC-TOF/MS, ECD, NPD를 이용한 잔류농약 다성분분석
박정욱(Jungwook Park),김애경(Aekyung Kim),김종필(Jongpil Kim),이향희(Hyanghee Lee),박덕웅(Duckwoong Park),문수진(Sujin Moon),하동룡(Dongryong Ha),김은선(Eunsun Kim),서계원(Kyewon Seo) 한국농약과학회 2014 농약과학회지 Vol.18 No.4
Fast and accurate multi-residue pesticides inspecting method needs in Agro-Fishery Products Inspection Center. So, We tried to seek the optimum method using GC-TOF/MS, GC-ECD, GC-NPD after QuEChERS sample preparation. In GC-TOF/MS, 138 kinds of pesticide were spiked at 0.3 and 0.5 μg/g for the identification and quantification in lettuce sample. Recoveries of 77 pesticides were between 70 and 130% with RSD (relative standard deviation lower than 20% at 0.3 μg/g. In GC-ECD, NPD, 146 kinds of pesticide were spiked for the identification and quantification in lettuce. Recoveries of 61 species were between 70 and 130% with lower than 20%. These results indicated that GC-TOF/MS, GC-ECD, NPD analysis with the QuEChERS sample preparation can be partly applied to multi-residue pesticides in vegetables.
광주광역시 농산물도매시장 판매 엽채류에 대한 잔류농약 통계적 분석
류근영(Keunyoung Ryu),김종필(Jongpil Kim),박덕웅(Duckwoong Park),이다빈(Davin Lee),송난주(Nanju Song),조배식(Baesik Cho),서계원(Kyewon Seo),김선희(Sunhee Kim) 한국농약과학회 2020 농약과학회지 Vol.24 No.1
This study was conducted to statistically analyze residual pesticides in the leafy vegetables which were sold at the wholesale markets in Gwangju from 2016 to 2018. As the analysis results of pesticide residues in total 4,483 samples, residual pesticides were detected from 827 samples and the detected concentrations in 93 samples exceeded MRLs (spinach 11, radish leaves 11). Residual pesticides were very frequently detected in 101 Chinese chives. The samples of agricultural products collected to practice monitoring of pesticide residues were 1,555 (34.7%) in Gwangju and 1,060 (23.6%) in Naju and they took over the half (58.3%). The frequently detected pesticides are Azoxystrobin (192) and Dimethomorph (124), and the pesticides which exceeded MRLs are Diazinon (13) and Chlorpyrifos (12). The correlation between violation and detection was significant in 2016 and 2018. High detected samples in most of the crops didn’t have a significant correlation with climate factors except for some crops (spinach and temperature, p<0.05; radish leaves and humidity, p<0.01). In addition, the correlation between price and climate factors could be confirmed, but no significant difference in whether the price increase factor affected the increase in pesticide treatment. In this study, it had different correlations in each factor, so it was difficult to think that violation or detection of residual pesticide in agricultural products had a direct relation to the price or climate.