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홍순성(Soonsung Hong),정미혜(Mihye Jeong),박경훈(Kyung Hun-Park),유아선(Are-Sun You),박연기(Yeon-Ki Park),이제봉(Je-Bong Lee),김찬섭(Chan-Sub Kim),신진섭(Jin-Sup Shin),박재읍(Jae-Eup Park) 한국농약과학회 2010 농약과학회지 Vol.14 No.2
This study was carried out to estimate the risk of pesticide operators who use high toxicological pesticides. The class II (highly hazardous) pesticides registered in korea were 15 products, and 11 products were spray type pesticides at orchard file in 2009. The using information based on the pesticide label and the data searched through survey of actual condition on pesticides were used for calculate the pesticide operator exposure dose. The risk quotients of these pesticides against the pesticides operator were calculated as devide pesticide exposure dose by reference dose which were presented by EFSA (European Food Safety Authority), JMPR (Joint FAO Meeting on Pesticide Residues), and US/EPA (United States Environmental Protection Agency). Omethoate showed the highest risk quotient and the values were 338 and 75 when the operator spray using speed sprayer and motor sprayer respectively. Risk quotients of all class II pesticide were above 1. This result means that the risk potential of these pesticides are very high.
홍순성(Soonsung Hong),이제봉(Je Bong Lee),박연기(Yeon-Ki Park),신진섭(Jin Sup Shin),임건재(Geon-Jae Im),류갑희(Gab Hee Ryu) 한국농약과학회 2007 농약과학회지 Vol.11 No.4
This research was carried out to propose the Korean method for estimating the agricultural occupational pesticide exposure level in orchard. The UK-POEM (UK-Predictive Operator Exposure Model) was proposed as a bench-marking model and analysed its performance properties. To extrapolate the Korean agricultural conditions, application equipment, application method, work rate per day, application volume and spraying time of pesticide was surveyed for Korean 204 orchard farmhouse. This survey indicate that the major application equipments are speed sprayer(64.9%) and motor sprayer(33.9%). When they spayed the pesticide with a speed sprayer, they worked for more than 4 hours on area of 4 ha per day. In case of using motor sprayer, they worked for more than 4 hours on area of 1 ha. Based on the above survey result, Korean method for estimating the pesticide exposure level of agricultural worker was proposed finally.
농약원제 및 제품 간의 자극성 및 감작성 상관성 평가 연구
이제봉(Je Bong Lee),신진섭(Jin Sup Shin),박연기(Yeon-Ki Park),정미혜(Mi-Hye Jeong),홍순성(Soonsung Hong),임건재(Gun-Jae Im),강규영(Kyu Young Kang) 한국농약과학회 2010 농약과학회지 Vol.14 No.2
This study was investigated to review the potentials of irritation and skin sensitization of active ingredients and end-use products of pesticides for pesticide registration, prediction of irritation and sensitization, and data requirements for other purposes. Pesticide irritation and sensitization referred to the Pesticide Manual(14th edition), while toxicity was evaluated based on the data submitted by the pesticide registrant. Totally 148 active ingredients and 149 end-use products were analyzed to compare the positive response, formulation type, and correlation between active ingredients and products. Among active ingredients, ratio of positive response to skin irritation, eye irritation, and skin sensitization were 18.8, 47.0 and 20.6% respectively. While, positive response to skin irritation, eye irritation, and skin sensitization of the products were 14.9, 38.9 and 23.6%, respectively. Emulsifiable concentrate showed the highest positive response among formulation types showing skin irritation 31.3%, eye irritation 81.3%, and skin sensitization 31.3%. On the other hand granule type showed the lowest response with skin 4.8, eye 14.3 and sensitization 14.8%. There was no correlation by active ingredient content on irritation and sensitization of products. However, both active ingredients and products showed same positive response were skin 73.1%, skin sensitization 66.2%, and eye irritation 44.7%. By the these results, correlation between technical grade of active ingredients and end-use products would be use for pesticide management at the screening stage, especially skin irritation and skin sensitization.
이제봉(Je Bong Lee),신진섭(Jin Sup Shin),박연기(Yeon-Ki Park),유아선(Are-Sun You),홍순성(Soonsung Hong),임건재(Gun-Jae Im),강규영(Kyu Young Kang) 한국농약과학회 2007 농약과학회지 Vol.11 No.4
In order to set ADIs for pesticides registered for use in Korea, an analysis of guidelines on setting and ADIs established by international bodies and advanced countries was conducted. General guidelines on the derivation ADIs are very similar among regulatory authorities. However, there were large differences in the ADIs' setting status and ADI values set for some individual pesticides. ADIs were established for 213 pesticides in UN, 332 in USA, 230 in Japan, 219 in UK and 435 in EU and Australia. Of the established ADIs in other countries, 87 to 252 pesticides were the pesticides were the pesticides registered in Korea depending countries. The number of lowest ADIs depending countries was 32 in USA, 23 in Japan, 6 in EU and Australia. The key target organs and endpoints used for setting ADIs were in the order of enzyme inhibition, body weight change and adverse effect on liver. The number of ADIs used for setting MRLs in Korea was high in the order of JMPR, Japan and USA. ADIs of EU and JMPR had highest similarity among bodies investigated. By referring to the guidances investigated at this study, guideline for setting ADI and ADIs for 64 pesticides registered in Korea were proposed.
박연기(Yeon-Ki Park),김병석(Byung-Seok Kim),신진섭(Jin-Sup Shin),배철한(Chul-Han Bae),박경훈(Kyung-Hun Park),이제봉(Jea-Bong Lee),홍순성(Soon-Sung Hong),조경원(Kyung-Won Cho),이규승(Kyu-Seung Lee) 한국농약과학회 2007 농약과학회지 Vol.11 No.4
In order to evaluate the toxic effects of butachlor, a herbicide widely used for control of weeds in paddy field, on medaka (Oryzias latipes), acute toxicity tests for five developmental stages and early life stage toxicity test of were conducted. As the results of acute toxicity test, 96h-LC<SUB>50</SUB>s for 1 day, 1 week, 2 weeks, 2 months and 5 months after hatching of O. latipes were 0.68, 0.52, 0.38, 1.09 and 0.45 mg L?¹, respectively. This indicated that the most sensitive stage was 2 weeks after hatching. The early life stage toxicity test showed that no statistically significant hatching period and hatching success of embryo was observed at all concentrations of butaclor. However, 0.05 and 0.1 mg L?¹ of butachlor showed statistically significant post hatching survival with p<0.1. Abnormalities of larva were 2.1, 2.3 and 10% at 0.025, 0.05 and 0.1 mg L?¹ of concentration, respectively. They showed abnormal vertebral axis, craniofacial alteration and retarded yolk-sac resorption. The total length and weight were decreased depending on butachlor concentration the end of test. Weight of larva was showed more sensitive toxic indicator than total length. The toxicological responses of O. latipes to butachlor expressed as LOEC(lowest observed effect concentration), NOEC(no observed effect concentration) and MATC(maximum acceptable toxicant concentration) values were 0.025, 0.013 and 0.018 mg L?¹, respectively.
박연기(Yeon-Ki Park),배철한(Chul-Han Bae),김병석(Byung-Seok Kim),이제봉(Jea-Bong Lee),유아선(Are-Sun You),홍순성(Soon-Sung Hong),박경훈(Kyung-Hoon Park),신진섭(Jin-Sup Shin),홍무기(Moo-Ki Hong),이규승(Kyu-Seung Lee),이정호(Jung-Ho Le 한국농약과학회 2009 농약과학회지 Vol.13 No.1
To assess the effect of butachlor on freshwater aquatic organisms, acute toxicity studies for algae, invertebrate and fishes were conducted. The algae grow inhibition studies were carried out to determine the growth inhibition effects of butachlor (Tech. 93.4%) in Pseudokirchneriella subcapitata (formerly knows as Selenastrum capriconutum), Desmodesmus subspicatus (formerly known as Scendusmus subspicatus), and Chlorella vulgaris during the exposure period of 72 hours. The toxicological responses of P. subcapitata, D. subspicatus, and C. vulgaris to butachlor, expressed in individual ErC?? values were 0.002, 0.019, and 10.49 ㎎ ℓ?¹, respectively and NOEC values were 0.0008, 0.0016, and 5.34 ㎎ ℓ?¹, respectively. P. subcapitata was more sensitive than any other algae species. Butachlor has very high toxicity to the algae, such as P. subcapitata and D. subspicatu. In the acute immobilisation test for Daphnia magna, the 24 and 48h-EC?? values were 2.55 and 1.50 ㎎ ℓ?¹, respectively. As the results of the acute toxicity test on Cyprinus carpio, Oryzias latipes and Misgurnus anguillicaudatus, the 96h-LC??s were 0.62, 0.41 and 0.24 ㎎ ℓ?¹, respectively. The following ecological risk assessment of butachlor was performed on the basis of the toxicological data of algae, invertebrate and fish and exposure concentrations in rice paddy, drain and river. When a butachlor formulation is applied in rice paddy field according to label recommendation, the measured concentration of butachlor in paddy water was 0.41 ㎎ ℓ?¹ and the predicted environmental concentration (PEC) of butachlor in drain water was 0.03 ㎎ ℓ?¹. Residues of butachlor detected in major rivers between 1997 and 1998 were ranged from 0.0004 ㎎ ℓ?¹ to 0.0029 ㎎ ℓ?¹. Toxicity exposure ratios (TERs) of algae in rice paddy, drain and river were 0.004, 0.05 and 0.36, respectively and indicated that butachlor has a risk to algae in rice paddy, drain and river. On the other hand, TERs of invertebrate in rice paddy, drain and river were 3.6, 50 and 357, respectively, well above 2, indicating no risk to invertebrate. TERs of fish in rice paddy, drain and river were 0.58, 8 and 57, respectively. The TERs for fish indicated that butachlor poses a risk to fish in rice paddy but has no risk to fish in agricultural drain and river. In conclusion, butachlor has a minimal risk to algae in agricultural drain and river exposed from rice drainage but has no risk to invertebrate and fish.
5종 농약에 대한 4종 담수조류(freshwater algae)의 감수성 비교
박연기(Yeon-Ki Park),김병석(Byung-Seok Kim),배칠한(Chul-Han Bae),김연식(Yeon-Sik Kim),박경훈(Kyung-Hoon Park),이제봉(Jea-Bong Lee),신진섭(Soon-Sung Hong),홍순성(Jin-Sup Shin),이규승(Kyu-Seung Lee),이정준(Jung-Joon Lee) 한국농약과학회 2008 농약과학회지 Vol.12 No.1
The purpose of the study was to determine the effects of isoprothiolane, diazinon, butachlor, dimethametryn and molinate in Selenastrum capriconutum, Scenedesmus subspicatus, Chlorella vulgaris and Nitzschia palea during an exposure period or 72 hours. The study was carried out in according with the GECD Guidelines for Testing of Chemicals No 201 Alga, Growth Inhibition Test. The toxicological responses of isoprothiolane to S. capriconutum, S. subspicatus, C. vulgaris and N. palea expressed as in individual ErC?? (Median Effective Concentration by growth rate) value, were 5.87, 9.91, 18.55 and 38.79 ㎎ L?¹, respectively. Diazinone to S. capriconutum, S. subspicatus, C. vulgaris and N. palea expressed as in individual ErC?? value, were 10.31, 11.44, >32 and 14.32 ㎎ L?¹, respectively. Butachlor to S. capriconutum, S. subspicatus, C. vulgaris and N. palea expressed as in individual ErC?? value, were 0.002, 0.019, 8.67 and 4.94 ㎎ L?¹, respectively. Dimethametryn to S. capriconutum, S. subspicatus, C. vulgaris and N. palea expressed as in individual EC?? value, were 0.0071, 0.011, 0.0065 and 0.009 ㎎ L?¹, respectively. Molinate to S. capriconutum, S. subspicatus, C. vulgaris and N. palea expressed as in individual ErC?? value, were 0.44, 1.26, 48.84 and 28.52 ㎎ L?¹, respectively. The sensitivities of five pesticides were different depending on freshwater alga in the order of S. capriconutum > S. subspicatus > C. vulgaris, N. palea. Highly significant correlation (r=0.9677) based on ErC??s were found between S. capriconutum and S. subspicatus.
Butachlor의 4종 담수조류(freshwater algae)에 대한 생장영향
박연기(Yeon-Ki Park),배철한(Chul-Han Bae),김병석(Byung-Seok Kim),박경훈(Kyung-Hoon Park),이제봉(Jea-Bong Lee),신진섭(Jin-Sup Shin),홍순성(Soon-Sung Hong),조경원(Kyung-Won Cho),이규승(Kyu-Seung Lee),이정호(Jung-Ho Lee) 한국농약과학회 2008 농약과학회지 Vol.12 No.1
Algae are vital in the primary production of the aquatic ecosystem, having been considered as good indicators of the bioactivity of pesticides. Algae have short life cycle, respond quickly to environmental change and their diversity and density can indicate the quality of their habitat. The purpose of the study was to determine the growth inhibition effects of butachlor (Tech. 93.4%) and K₂Cr₂O? (Tech. 99.5%) in Selenastrum capriconutum, Scenedesmus subspicatus, Chlorella vulgaris and Nitzschia palea during and exposure period of 72 hours. The toxicological responses of S. capriconutum, S. subspicatus, C. vulgaris and N. palea to butachlor, expressed in individual ErC?? values were 0.0022, 0.019, 8.67 and 4.94 ㎎ L?¹, respectively. NOEC values were 0.0008, 0.0016, 5.34 and 2.92 ㎎ L?¹, respectively. S. capriconutum was more sensitive than the other algae species. The toxicological responses of S. capriconutum, S. subspicatus, C. vulgaris and N. palea to K₂Cr₂O? expressed as ErC?? values were 0.91, 0.78, 0.85 and 0.57 ㎎ L?¹, respectively. NOEC values were 0.2, 0.2, 0.2 and 0.18 ㎎ L?¹, respectively. Growth inhibition of S. capriconutum, S. subspicatus, C. vulgaris and N. palea from PEC of butachlor were 100, 75, 0 and 0%, respectively.