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농산물 중 살충제,살선충제 Fosthiazate의 개별 잔류분석법 확립
김지윤 ( J Y Kim ),김자영 ( J Y Kim ),김경진 ( K J Kim ),김다솜 ( D S Kim ),김해나 ( H N Kim ),허장현 ( J H Hur ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2013 강원 농업생명환경연구 Vol.25 No.2
In the present study, a single residual analytical method was developed for fosthiazate. Fosthiazate was analyzed in brown rice, soybean, green pepper, and mandarin. For fosthiazate, samples were extracted with acetonitrile, concentrated and partitioned with dichloromethane and analyzed with GC/FPD. The limit of quantitation (LOQ) for fosthiazate was 0.1 ng (S/N>10) and method limit of quantitation (MLOQ) was 0.02 mg/kg. Recovery ranged through 80.7-111.3% at fortification level of 0.02 (MLOQ), 0.2 (10×MLOQ), and 1.0 (50×MLOQ). The coefficient of variation (CV) for both the pesticides was less than 10% regardless of sample types. These results were further confirmed with GC/MS, respectively.
GC/FPD를 이용한 현미, 대두, 고추, 감귤 중 Pyraclofos의 개별 분석법 확립
김지윤 ( J Y Kim ),김자영 ( J Y Kim ),김경진 ( K J Kim ),김다솜 ( D S Kim ),김해나 ( H N Kim ),허장현 ( J H Hur ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2013 강원 농업생명환경연구 Vol.25 No.3
In the present study, a single residual analytical method was developed for pyraclofos. Pyraclofos was analyzed in brown rice, soyabean, green pepper, and mandarin. For pyraclofos, samples were extracted with acetonitrile, concentrated and partitioned with dichloromethane and analyzed with GC/FPD. The limit of quantitation (LOQ) for fosthiazate was 0.1 ng (S/N>10) and method limit of quantitation (MLOQ) was 0.02 mg/kg. Recovery ranged through 78.1%-117.7% at fortification level of 0.02 (MLOQ), 0.2 (10×MLOQ), and 1.0 (50×MLOQ). The coefficient of variation (CV) for both the pesticides was less than 10% regardless of sample types. These results were further confirmed with GC/MS, respectively.
돌나물(Sedum sarmentosum Bunge) 중 boscalid+triflumizole 30(20+10)% 수화제의 boscalid에 대한 잔류성 연구
이수홍 ( S. H. Lee ),박홍열 ( H. R. Park ),김지윤 ( J. Y. Kim ),김자영 ( J. Y. Kim ),허장현 ( J. H. Hur ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2011 강원 농업생명환경연구 Vol.23 No.3
This study was investigated to determine the residual amounts of boscalid in sedum (Sedum sarmentosum Bunge) using gas-liquid chromatography with electron capture detector (GLC/ECD) and to assess the standard for safe use of boscalid+trifumizole 30 (20+10)% WP. Boscalid is used to control the Botrytis cinerea causing gray mold on sedum. Recovery tests of boscalid in sedum were done by spiking 10 and 50-times of limit of detection (LOD). Recoveries obtained from two concentrations were 95.02% and 88.74%, respectively. The residual amount of boscalid from the sedum harvested 3, 7 and 14 days after 2 and 3-times treatment ranged from 11.68 to 46.20 mg/kg. Because the maxium residue limit (MRL) of boscalid in the sedum is 30.0 mg kg-1, it is proposed for boscalid of boscalid+trifumizole 30 (20+10)% WP to apply 2 times, 7 days before harvest in Korea.