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충북지역 산지 고추와 유통 고춧가루 중 잔류농약 모니터링 및 위해성 평가
김광일(Kwang-Ill Kim),김흥태(Heung-Tae Kim),경기성(Kee-Sung Kyung),진충우(Chung-Woo Jin),정찬희(Chan-Hee Jeong),안명수(Myung-Soo Ahn),심석원(Seok-Won Sim),윤상순(Sang-Soon Yun),김윤정(Yun-Jeong Kim),이광구(Kwang-Goo Lee),이기두(Kee-D 한국농약과학회 2006 농약과학회지 Vol.10 No.1
In order to monitor the pesticide residues in/on peppers and pepper powder and to assess their risk, pesticides in/on green pepper from 10 farmgates and fresh red pepper from 9 farmgates in Chungbuk area and pepper powder from 6 wholesale markets in Cheongju city were analyzed with a GLC and an HPLC. Also, pepper powder made by pulverization of the dried red pepper was analyzed to elucidate the change of pesticide residues in fresh red pepper by oven-drying. The number of pesticides detected from green pepper, fresh red pepper, dried red pepper and pepper powder were 9, 12, 12, and 17, respectively, including 10 pesticides (one fungicide and nine insecticides) which were exceeded the maximum residue limits (MRLs). The exceeding rate of the MRL were higher in dried red pepper and pepper powder than in green pepper and fresh red pepper. Although some pesticides in peppers and pepper powder exceeded the MRLs, their estimated daily intake(EDI) were less than 1.6% of their acceptable daily intakes(ADIs), suggesting that it would be estimated to safe. By oven-drying of fresh red pepper at 65℃ for 72 hours, the weight of dried red pepper was from 1/5.9 from 1/7.8 of fresh red pepper, while the concentration of pesticide residue in dried red pepper increased from 1.7 to 8.2 times, suggesting that further reconsideration was required for the MRL of pepper powder.
김대규(Dae Kyu Kim),김주광(Joo Kwang Kim),이은영(Eun Young Lee),박인영(In Young Park),노현호(Hyun Ho Noh),박영순(Young Soon Park),김태화(Tae Hwa Kim),진충우(Chung Woo Jin),김광일(Kwang Ill Kim),윤상순(Sang Soon Yun),오상균(Sang Kyun 한국농약과학회 2007 농약과학회지 Vol.11 No.3
In order to elucidate the residual characteristics of some pyrethroid insecticides commonly used for Korean cabbage, such as bifenthrin, lambda-cyhalothrin and deltamethrin, the test pesticides were sprayed onto the crop at recommended rate and doubled rate of the recommendation. Their detection limits were 0.004 ㎎ ㎏?¹ and mean recoveries at the fortification levels of 0.04 and 0.2 ㎎ ㎏?¹ were from 95.16 to 99.32 and from 86.81 to 103.73%, respectively. Half-lives were from 2.5 to 3.6 at the recommended rate and from 2.3 to 3.9 days at the doubled rate of the recommendation. Initial residue amounts of bifenthrin and lambda-cyhalothrin at the recommended rate and doubled rate of recommendation and of deltamethrin at the recommended rate were less than their MRL, whereas, in case of deltamethrin sprayed at doubled rate of the recommendation, the residue level exceeded its MRL. However, the residue levels of the pesticides in the crop sampled at harvest were less than their maximum residue levels and the ratios of the estimated daily intake (EDI) to acceptable daily intake (ADI) for the pesticides tested calculated from the residue data at harvest were less than 7%, suggesting that these pesticides would be safe for Korean cabbage from the residue concern.
삽입금속을 사용한 구상흑연주철과 2024 알루미늄합금의 마찰압접에 관한 연구
김창규(CHANG-GYU KIM),김치옥(CHI-OK KIM),김광일(KWANG-ILL KIM) 한국해양공학회 2003 韓國海洋工學會誌 Vol.17 No.5
Friction welding of GCD45 spheroidal graphite cast iron and 2024 aluminum alloy has been studied, especially in terms of the joint faces and strength of friction welding. For appropriate results of the friction welding of GCD45 graphite cast iron and 2024 aluminum alloy, an insert of A1050 pure aluminum metal was used. The joint strength of the A1050 pure aluminum insert approached the maximum strength of 165.7Mpa, compared to 128MPa for the joint between GCD45 graphite cast iron and A1050 pure aluminum without the insert metal. Maximum strength, 165.7Mpa, was possible for the following optimum conditions: 20MPa for the friction pressure, P1, 60MPa for the upsetting pressure, P2, 1 second for the friction time, t1, 3000rpm for the rotation, N, and 0.3 seconds for the brake time, tB.
비닐하우스 재배 얼갈이배추 중 와 의 Indoxacarb Thiamethoxam 잔류특성 및 식이섭취량
이은영 ( Eun Young Lee ),김대규 ( Dae Kyu Kim ),박인영 ( In Young Park ),노현호 ( Hyun Ho Noh ),박영순 ( Young Soon Park ),김태화 ( Tae Hwa Kim ),진충우 ( Chung Woo Jin ),김광일 ( Kwang Ill Kim ),윤상순 ( Sang Soon Yun ),오상균 ( 한국환경농학회 2008 한국환경농학회지 Vol.27 No.1
This experiment was carried out to investigate the residue patterns of two insecticides, indoxcarb and thiamethoxam, commonly used for Chinese cabbage, under greenhouse conditions. The pesticides were sprayed onto Chinese cabbage at the recommended dose and double of the recommended dose 10 days before the prearranged harvest and then sampling was done at 0.17, 1, 2, 3, 4, 5, 6, 8, 10, and 12 days after spraying. The amounts of their residues in the crop were analyzed with an HPLC. The limit of detection (LOD) of both indoxacarb and thiamethoxam was 0.01 mg kg-1 and mean recoveries of indoxacarb and thiamethoxam were from 97.91 to 104.36% and from 97.07 to 105.49%, respectively. Half-lives of indoxacarb and thiamethoxam were 3.4 and 2.3 days at the recommended dose and 3.3 and 3.5 days at the doubled dose, respectively. The ratios of the EDI to ADI by intake the crop harvested 10 days after spraying were less than 4% of their ADIs.
상추 중 Lambda-cyhalothrin과 Deltamethrin의 잔류 특성
윤상순(Sang Soon Yun),심석원(Seok-Won Shim),김광일(Kwang Ill Kim),안명수(Myung-Soo Ahn),윤택한(Teak Han Youn),김윤정(Yun-Jeong Kim),황효선(Hyo Seon Hwang),진충우(Chung Woo Jin),한상국(Sang Kuk Han),오상균(Sang Kyun Oh),신종호(Jong Ho 한국농약과학회 2008 농약과학회지 Vol.12 No.2
This study was carried out to investigate the residue patterns of two insecticides, lambda-cyhalothrin and deltamethrin, commonly used for lettuce, under greenhouse conditions. The pesticides were sprayed with dilution of recommended and doubled doses onto lettuce. Their detection limits were 0.001 ㎎ㆍ㎏?¹ and mean recoveries at the fortification levels of 0.2 and 1.0 ㎎ㆍ㎏?¹ were from 101.17 to 104.25 and from 99.70 to 103.77%, respectively. The pesticides were gradually decreased in lettuce with time. Biological half-lives of lambda-cyhalothrin and deltamethrin were 1.7 and 1.4 days at the recommended dose and 1.8 and 1.4 days at the doubled dose, respectively. Initial residue amounts of lambda-cyhalothrin and deltamethrin at the recommended and doubled doses exceeded their MRLs. However, the residue levels of the pesticides in the crop sampled at harvest were less than their MRLs. The ratios of the estimated daily intake (EDI) to acceptable daily intake (ADI) by intake the crop harvested 10 days after spraying were less than 1% of their ADIs.
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.-
김광일,최은수,조은경,김학산,서정일,손진희,손행종,전원호,윤윤보 대한소화기학회 1995 대한소화기학회지 Vol.27 No.1
Background/Aims: Stomach cancer is the most common malignancy and one of the leading cause of death in Korea. However, the prognosis of early gastric carcinoma(EGC) has been reported execellent and this is why we emphasize the early diagnosis and treatment of gastric cancer. Methods: We analyzed 109 patients of early gastric carcinoma which had been confirmed by surgery and pathological examination from January 1986 to December 1992 in the National Medical Center. Resluts: The incidence of early gastric carcinoma was 18.5% of gastric resection for stomach cancer. Male to female ratio was 2.0:1 with male predominance. The commonly involved age of patients was 50 to 59 years and mean age was 55.2. The epigastric pain was predominant symptom and followed by epigastric discomfort and indigestion. The macroscopic classification revealed that the most common types were Ilc(31.9%) and its combined types(41.4%). In sixty cases(51.7%), the lesions extended to the submucosa, while fifty five cases(48.3%) were confined to the mucosa. The incidence of metastases to regional lymph nodes in mucosal carcinoma was in 8.9% and that of submucosal lesions was 28.3%(p$lt;0.05). The most commonly involved sites were antrum(60.3%) and lesser curvature(35.3%) of the stomach. Forty six cases(39.7%) were between 2.1 cm and 4.0cm in diameter and 15 cases less than 1cm. The most common pathologic type was tubular adenocarcinoma(82.8%), followed by signet ring ce11 carcinoma and mucinous adenocarcinoma. Overall 5 year survival rate for the entire group was 9l.6%. Conclusion: The clinical and pathologic features of early gastric carinoma in the National medical Center werc not much different from those of previous reports, except that the incidence was 18.5% in our series and higher than those of previous reports.