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유통 친환경 과실류와 과채류 중 농약잔류 실태조사 및 안전성 평가
이재윤(Jae Yun Lee),노현호(Hyun Ho Noh),박소현(So Hyun Park),이광헌(Kwang Hun Lee),박효경(Hyo Kyoung Park),홍수명(Su Myeong Hong),김두호(Doo Ho Kim),경기성(Kee Sung Kyung) 한국농약과학회 2012 농약과학회지 Vol.16 No.4
In order to monitor the residual pesticides in environment friendly agricultural commodities, fruits and fruiting vegetables. Twenty-five agricultural commodities were collected twice in May and August 2011 from nine environment friendly agricultural commodities-selling supermarkets and retail stores located in eight major cities in Korea. The number of each agricultural commodity collected, 555 samples in total, was 152 organic agricultural products, 202 pesticide-free agricultural products and 201 low-pesticide agricultural products. Pesticide residues in samples were analyzed by multiresidue method for 245 pesticides using a GCECD/ NPD and an HPLC-DAD/FLD and the peaks suspected as pesticides were identified with a GC/MSD. As a result of pesticide residue analysis, three pesticides, bifenthrin, EPN and chlorpyrifos, were detected from four samples including apple, representing a detection rate of 0.72%. The residue levels of the four pesticide-detected samples were less than their maximum residue limits (MRLs) but one pesticide EPN detected from pear exceeded its legible criterion of one twentieth MRL. Estimated daily intakes of the pesticides detected from fruits and fruiting vegetables were less than 0.76% of their maximum permissible intake.
유통 친환경 엽채류와 엽경채류 중 잔류농약 실태조사 및 안전성 평가
이재윤(Jae Yun Lee),노현호(Hyun Ho Noh),이광헌(Kwang Hun Lee),박소현(So Hyun Park),경기성(Kee Sung Kyung) 한국농약과학회 2012 농약과학회지 Vol.16 No.1
In order to monitor the levels of pesticides in environment-friendly stalk and stem vegetables and leafy vegetables selling at markets in Korea. A total of 637 (395 organic agricultural products, 242 pesticide-free agricultural products) samples of 21 stalk and stem vegetables and leafy vegetables were collected twice from markets in July and August 2010 in Korea. Pesticide residues in samples were analyzed by multiresidue method for 240 pesticides using GC-ECD/NPD and HPLC-DAD/FLD. The suspected-pesticides were confirmed with a GC-MSD. As a result of analysis, six pesticides were detected from eight samples, representing a detection rate of 1.3% and amounts of pesticide residues in samples were as follows: alachlor 0.043, chlorfenapyr 0.022-0.324, diazinon 0.024, dicofol 0.009-0.138, dithiopyr 0.008, metolachlor 0.025 mg/kg. Their residue levels were below the MRLs. Estimated daily intakes (EDIs) of the pesticides detected from stalk and stem vegetables and leafy vegetables were less than 25% of their acceptable daily intakes (ADIs), representing that residue levels of the pesticides detected were evaluated as safe for consumption. However, five samples containing pesticide residues were unsuitable environment-friendly products because of pesticides detected more than their 10% MRLs in organic and pesticide-free agricultural products.
청주지역 도매시장과 재래시장 유통 엽채류 중 농약의 잔류 특성
노현호(Hyun Ho Noh),이광헌(Kwang Hun Lee),이재윤(Jae Yun Lee),박효경(Hyo Kyoung Park),박소현(So Hyun Park),김선호(Sun Ho Kim),경기성(Kee Sung Kyung) 한국농약과학회 2011 농약과학회지 Vol.15 No.4
This study was carried out to survey the residual characteristics of pesticides and assess their safety. Nineteen agricultural commodities, collected from wholesale and traditional markets in Cheongju. Nineteen agricultural commodities including perilla leaves were collected from the markets on October 29th, 2010. Total 240 pesticides which can be analyzed by multiresidue analysis method by GLC and HPLC were monitored and the pesticides detected were confirmed by GC-MSD and LC-MS. Five pesticides, alachlor, bifenthrin, endosulfan, procymidone and triflumizole, were detected from five samples, such as welsh onion, leek and celery in case of wholesale market and perilla leaves and welsh onion in case of traditional market. Detection rate of 13.2% was obtained as a result of pesticide analysis but 2.6% of the pesticides detected exceeded their maximum residue limits. The estimated daily intakes (EDIs) and maximum permissible intakes (MPIs) of the pesticides detected were less than 26% and 0.05% of their acceptable daily intakes (ADIs) respectively, representing that residue levels of the pesticides detected would be safe.
인삼 중 종자분의 처리 tolclofos-methyl의 잔류 특성
노현호(Hyun Ho Noh),이재윤(Jae Yun Lee),박소현(So Hyun Park),이광헌(Kwang Hun Lee),박효경(Hyo Kyoung Park),오재호(Jae Ho Oh),권찬혁(Chan Hyeok Kwon),이중근(Joong Keun Lee),우희동(Hee Dong Woo),권기성(Ki Sung Kwon),경기성(Kee Sung Kyu 한국농약과학회 2012 농약과학회지 Vol.16 No.3
This study was carried out to evaluate residual characteristics of tolclofos-methyl in ginseng and elucidate the reason for its high detection rate from fresh ginseng selling at markets. Seeds of ginseng were sowed after seed dressing with tolclofos-methyl and after a year of growth, the young seedlings were transplanted to field. They were then harvested annually until three-years of growth and the pesticide residue was analyzed in them. LOD and LOQ of the pesticide were 0.001 and 0.003 mg/kg, respectively. Recovery test was carried out to validate the analytical method for tolclofos-methyl in ginseng. The ginseng seedlings were fortified with the test pesticide at the level of LOQ, ten times of LOQ and maximum residue concentration of tolclofos-methyl. Its recovery ranged from 77.37 to 100.16%. Residual concentration of tolclofos-methyl in ginseng seedlings just before transplanting and two-year-old ginseng were from 7.58 to 8.05 and from 6.46 to 6.79 mg/kg, respectively. In case of three-year-old ginseng, it was found to be from 4.18 to 4.35 mg/kg. As a result of annual pesticide residue analysis, concentration of the pesticide was found to decrease time-coursely in ginseng. This may be due to decomposition and increasing of fresh weight of the ginseng during the cultivation periods of three years.
쪽파 중 Chlorantraniliprole, Teflubenzuron 및 Trifloxystrobin의 잔류 특성
노현호 ( Hyun Ho Noh ),이재윤 ( Jae Yoon Lee ),박소현 ( Kwang Hun Lee ),이광헌 ( Hyo Kyoung Park ),진충우 ( Chung Woo Jin ),김광일 ( Kwang Ill Kim ),심석원 ( Seok Won Shim ),윤상순 ( Sang Soon Yun ),경기성 ( Kee Sung Kyung ) 한국환경농학회 2012 한국환경농학회 학술대회집 Vol.2012 No.-
Azoxystrobin과 Difenoconazole의 인삼 중 잔류 특성
노현호(Hyun-Ho Noh),이재윤(Jae-Yun Lee),박소현(So-Hyun Park),이광헌(Kwang-Hun Lee),오재호(Jae-Ho Oh),임무혁(Moo-Hyeog Im),경기성(Kee-Sung Kyung) 한국농약과학회 2012 농약과학회지 Vol.16 No.2
This study was carried out to elucidate residual characteristics of azoxystrobin and difenoconazole in fresh ginseng. Test pesticides were sprayed onto ginseng both in 2009 for 3-year-old ginseng and in 2010 for 4-year-old ginseng according to their pre-harvest intervals (PHIs). Limit of quantitation (LOQ) of both azoxystrobin and difenoconazole was 0.003 mg/kg. Analytical methods set up for the test pesticides were considered to be suitable for the analysis of their residues in fresh ginseng, considering that their recoveries ranged from 87.58 to 112.79%. Concentration of azoxystrobin in 3-year-old ginseng ranged from 0.004 to 0.011 mg/kg and that in 4-year-old ginseng ranged from 0.007 to 0.016 mg/kg. Amounts of difenoconazole in 3- and 4-year-old ginsengs were from 0.003 to 0.007 and from 0.007 to 0.01 mg/kg, respectively, representing no accumulation effect observed in residue amount between them.