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RISS 인기검색어
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- 저자 : 봉영훈 ( Young Hoon Bong ) (검색결과 4 건)
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최훈 ( Hoon Choi ),김형수 ( Hyung Soo Kim ),서정혁 ( Jung Hyuck Suh ),백옥진 ( Ock Jin Paek ),강영운 ( Young Woon Kang ),이준구 ( Joon Goo Lee ),봉영훈 ( Young Hoon Bong ),곽지연 ( Ji Yeon Kwak ),이승일 ( Seung Il Lee ),신민홍 ( 한국환경농학회 2013 한국환경농학회 학술대회집 Vol.2013 No.-
This study was carried out to survey the levels of mercury in root vegetables and assess dietary exposure / risk to the Korean population health. Various samples including Panax ginseng C.A mayer, Codonopsis lanceolata, and Platycodon granditloum were collected from markets across Korea. The concentrations of mercury were measured using automatic mercury analyzer. The analytical and sampling methods in this study were full validated. The mercury content in root vegetables was determined below 100 μg/kg (maximum residue of mercury for salt established in Korea). For risk assessment, probable daily intake was calculated and compared with PTWI (tolerable weekly intake) established by JECFA. The level of overall exposure to mercury for Korean through root vegetables was below 1% of the recommended JECFA levels, indicating of little possibility of risk. Whereas, MFDS was conducted to assess the dietary exposure to mercury from food intake, based on several reports regarding mercury published by MFDS in the 2000s. The mean and 95th percentile for exposure to dietary mercury were 4.29 and 12.48 μg/day, corresponding to 13.6% and 39.7% of PTWI, respectively.
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2008-2009년 국내 폐사 야생조류 및 동물 체내의 잔류농약 분석
장정희,봉영훈,김동규,김미경,정갑수,손성완,Jang, Jung-Hee,Bong, Young-Hoon,Kim, Dong-Gyu,Kim, MeeKyung,Chung, Gab-Soo,Son, Seong-Wan 대한수의학회 2010 大韓獸醫學會誌 Vol.50 No.3
Pesticides are useful to eliminate harmful insects and grow crops however, misuse and abuse of pesticides may cause a death of wild birds, livestock, and companion animals. We analyzed residual pesticides in the ingesta and tissues from the dead wild birds, livestock, and companion animals which were suspected pesticide poisoning based on the diagnosis of the Animal Disease Diagnostic Center of National Veterinary Research and Quarantine Service (NVRQS). The samples were primarily brought to NVRQS from local communities and veterinary diagnostic laboratories. The 231 suspicious samples of pesticide poisoning based on the necropsy were analyzed by GC/NPD, GC/FPD, GC/ECD, or GC/MSD in 2008 and 2009. Pesticides were identified from the 55 samples of total 143 samples analyzed in 2008 and from the 34 samples of total 88 samples analyzed in 2009. The pesticide identification rates in 2008 were higher than the rates in 2009. It may have relevance to the increased samples with the outbreak of avian influenza in 2008 in Korea. The concentrations of pesticides found in the dead animals varied and exceeded the respective $LD_{50}$ of pesticides in many cases. Monochrotophos, phosphamidon, and methomyl were the most common pesticides found and those pesticides are high rank sales in Korea. The cause of pesticide poisoning in animal is assuming a misuse and an abuse of commonly used pesticides in Korea.
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김미경,윤선종,김동규,봉영훈,김희진,장정희,정갑수,Kim, MeeKyung,Yun, Seon Jong,Kim, Dong-Gyu,Bong, Young-Hoon,Kim, Heuijin,Jang, Jung-Hee,Chung, Gab-Soo 대한수의학회 2008 大韓獸醫學會誌 Vol.48 No.2
Pesticides are extensively used for the control of crop pests in agriculture and forestry. Organophosphate (OP) and carbamate pesticides are especially effective for the control of a variety of harmful insects. However, these cholinesterase inhibitors are also dangerous to non-target organisms (wildlife and other animals) because of their high acute toxicity. Most poisonings by pesticides occur as a result of misuse or accidental exposure, but intentional killing of unwanted animals also occurs. At the request of a local autonomous entity, we investigated wild bird poisonings by pesticides from 2003 to 2007. The 207 suspicious samples of pesticide poisoning based on the necropsy were analyzed by GC/NPD, GC/FPD, or GC/MSD. We looked for trends in the identification of pesticides in wild birds thought to have died from poisoning. Pesticides were determined in 59% of the total samples analyzed. Phosphamidon and monochrotophos were the most common pesticides identified, which amounted to 77% of the subtotal. Other OP and carbamate pesticides were also found in various concentrations from dead wild birds. The determined rates of pesticides were as high as 86% and 76% in 2003 and 2006, respectively, during an outbreak of avian influenza in Korea.
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백옥진 ( Ock Jin Paek ),김형수 ( Hyung Soo Kim ),서정혁 ( Jung Hyuck Suh ),강영운 ( Young Woon Kang ),이준구 ( Joon Goo Lee ),봉영훈 ( Young Hoon Bong ),최훈 ( Hoon Choi ),곽지연 ( Ji Yeon Kwak ),이승일 ( Seung Il Lee ),박기훈 ( 한국환경농학회 2013 한국환경농학회 학술대회집 Vol.2013 No.-
Alternaria toxins haver been found to be natural food contaminants in grains, sunflowers seeds, and some visibly decayed fruits in many countries. Their natural occurrence in cereals has been reported in different countries. Several studies have reported the relevance of the this genus in crop. However, there are no studies on the method validation of alternaria toxin in cereals in our contry. A simple and sensitive analytical method based on HPLC with PDA and mobile phases using 0.1% phosphoric acid and acetonitrile was developed for simultaneous determination of alternaria toxins. A method validation for the determination of alternaria toxins in cereals was validated. In short, the method is as follows : A test portion of a sample is extracted with a mixture of methanol/water(90/10, v/v). This raw extract is then diluted, filtered, and applied to an SPE column. After washing and elution with acetonitrile, the elute is evaporated to dryness. After toxins in the dry residue in mobile phase are injected into a high performance liquid chromatography, and detected and quantified by PDA. For alternaria toxins in the cereals, Recovery test, calibration curves (Linearity), LOD and LOQ were successfully confirmed and Reproducibility relative standard deviations(RSDR) and Repeatability relative standard deviations(RSDr) for cereals samples were below 15% for the spiked cereals at 100 ug/kg. Since all these parameters lie well within the acceptable range set forth in EU mycotoxin method validation legislation. This method is The proposal method is sensitive, repeatable and rapid enough to apply to officially routine inspection of agricultural products including cereals.
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