Effect of storage temperature, washing, and cooking on postharvest-treated pesticide residues in polished rice was investigated. After being traeted with each 500 mg/kg of captan, carbaryl, phenthoate, fenthion, fenitrothion, chlorpyriphos-methyl, pirimiphos-methyl, the polished rice was stored for 8 weeks at 4 and 30℃, respectively. The penetation rate of carbaryl was the highest as 27.5% and the others, 13 to 18%. The half lives of pesticide residues were estimated as 30 to 230 weeks at 4℃, but 1 to 12 weeks at 30℃. The residues were reduced faster at 30℃ than at 4℃. The half lives of pesticide residues by water washing were estimated as 0.7 to 4.6 trials and the residues were removed with the washing trials. The residues of captan and carbaryl in cooked rice were removed 100 and 98%, respectively, comparing to initial residues concentration in treated rice but those of other 5 pesticides were removed 80%.

An attempt was made to determine the residual distribution of organochlorine and organophosphorus pesticides in the various kinds of Korean tea which were purchased from the market. The organochlorine pesticides investigated in this study were BHC, DDT and dicofol and the organophosphorus pesticides were diazinon, EPN, fenitrothion and parathion. The pesticide residues were determined by GC-ECD and NPD. Only BHC was detected in all the samples and it's level were ranged from 0.00064 ppm to 0.05995 ppm and it's average was 0.00682 ppm and DDT, dicofol and organophosphorus pesticides were not detected in all samples. The organophophorus pesticides were detected(0.0035-0.0983 ppm) in raw materials but were not in the manufactured material and it is considered that the largely components of the pesticides is removed by drying and high temperature while the tea was manufactured. The recovery tests of the pesticides gave satisfactory results showing an average yield of 97.6% with organochlorine pesticides and 92.5% with organophosphorus pesticides and the detection limits level were 0.00008 ppm to 0.0010 ppm.

This study was carried out to determine the pesticide residues in rice bran, crude rice bran oil and the oil of various stages of refining process. Each samples were analyzed for 41 pesticide residues by multiclass multiresidue methods with GC-ECD, NPD and identified by GC-MSD. Rice bran were detected cypermethrin, diazinon, dichlofluanid, and its level were ranged from 0.01-0.122 ppm. Crude rice bran oil were detected cypermethrin, diazinon, dichlofluanid, dimethoate, etrimfos, flucythrinate, and its level were ranged from 0.015-0.654 ppm. Crude rice bran oil has the higher level of pesticide residues and more varieties of pesticides than rice bran. But pesticide residues in the crude rice bran oil was found to be almost removed when pigment was decolorized by absorption using active carbon and clealy removed by thermolysis for deodorization.

산지별로 채취된 쌀, 보리, 밀에 함유된 잔류농약(유기수은제 및 유기감소제)을 Dithizone법과 GLC법으로 비교분석한 바 이에서 얻은 결과를 요약하면 다음과 같다. 1. Recovery는 유기수은에 있어서 TLC법.에 비하여 GLC법이 양호했고, 유기감소제는 GLC법으로 평균 약 였다. 2. 시료중 유기수은의 잔류수준은 Dithizone법으로 쌀에 있어서 ND-0.053, .보리는 ND-0.051, 밀은 ND-0.033pm이었고, GLC법으로는 쌀은 trace(less than 0.002ppm)-0.036, 보리는 trace-0.030, 밀은 trace-0.025ppm으로 GLC법이 다소 낮은 수치였다. 3. 유기감소제의 잔류수준은 GLC법으로, 쌀에 있어서 BHC(trace-0.0090ppm), DDT(ND-0.0001ppm), Aldrin(trace-0.0032ppm), Heptachlor(race-0.0031ppm), Dieldrin(ND-0.0092ppm), Endrin(ND-0.0057ppm)이었는데, 수은화합물과 모두 공인최대허용량에 월등히 미달되는 안전수준이었다. 4. Column packing은 유기수은분리에는 -DEGS/chromosorb-W,A,W., 유기감소제에는 -DC-200/chromosorb-W,A.W.,가 적당하였는데, 유기수은제의 injection sample의 조제에 있어서 ?를 겸한 정제와 reduced glutatione에 의한 유출처리는 ghost peak의 소거와 성분 peak의 완전분리에 효과가 컸으며 검출감도도 높았다.

본 연구는 표면 세척 시스템을 이용하여 유자의 미생물과 잔류농약 제거 효과를 살펴보았다. 선행 연구로 오징어 먹물을 제거 효과를 보기 위해 스프레이 회전 속도 0.11, 0.42, 0.73 m/s, 수압 0.6, 0.9, 1.2 MPa과 컨베이어 속도 0.046, 0.092, 0.138 m/s 으로 세척 조건을 달리하였다. 오징어 먹물 제거 실험 결과 먹물 제거 효율은 컨베이어 속도와 분사 노즐 회전수와는 높은 상관관계를 나타내었으며 수압의 조건

We were carried out to monitor pesticide residues in herbal medicine. In Korea Pharmacy, these are no critics for pesticides except 5 kinds of organic chlorines (BHC, DDT, Aldrin, Endrin, Dieldrin) and heavy metals. We analysed 53 kinds of pesticides consisted of 14 kinds of organochlorines, 20 kinds of organophosphoruses, and 19 kinds of pesticides estimated endocrine disruptor on 373 samples consisted with 30kinds of herbal medicine. In this study, Domestic, Chinese and Japanese herbal medicines were tested with GC/ECD, GC/NPD and then confirmed with GC/MSD. Recoveries were 75～110% in ECD detector and 76～97% in NPD detector. Detection limits were 0.004～0.064ppm in ECD detector and 0.006～0.094ppm in NPD detector. Organochlorines and others were not detected in samples.

본 실험은 1998년 1월부터 2001년 12월가지 4년간 경기도와 인천지역에 납품된 군납 농산물 17종(배추, 무, 오이, 감자, 사과, 양파, 파, 양배추, 고추, 당근, 상추, 호박, 마늘, 미나리, 시금치, 쑥갓, 부추)을 대상으로 유기염소계 농약 10종 (BHC, captafol, captan, chlorobenzilate, chlorothalonil, DDT, dicofol, endosulfan, folpet, tetradifon)을