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RISS 인기검색어
- 검색키워드
- 저자 : 나태웅 ( Tae Wong Na ) (검색결과 2 건)
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조일규 ( Il Kyu Cho ),남효송 ( Hyo Song Nam ),전용배 ( Yongbae Jeon ),박준성 ( Jun Sung Park ),나태웅 ( Tae Wong Na ),김백종 ( Back Jong Kim ),( Eunsung Kan ) 한국환경농학회 2016 한국환경농학회지 Vol.35 No.4
BACKGROUND: Significant amount of bisphenol A has been released from the manufacturing process of plastics, epoxy resins, dental material and flame retardants. Bisphenol A has been detected at trace levels in wastewater, surface water, landfill leachate and drinking water. However, the residual survey of bisphenol A has not been performed in agricultural reservoir beside agricultural environment cultivating crops. This study was conducted to monitor the residual bisphenol A in national agricultural reservoirs and understand a level of contamination of bisphenol A in the agricultural environment in Korea. METHODS AND RESULTS: The water and water sediment were collected at agricultural reservoirs in Chungnam, Chungbuk, Kyunggi, Jeonnam, Jeonbuk, Kyungnam and Kyungbuk province. Bisphenol A was analyzed by the LC-MS/MS with triple quad 4500. The recovery of water and water sediment in the agricultural reservoirs showed the level of 95.7~97.2% and 91.5 ~100.3%, respectively. CONCLUSION: Bisphenol A was detected at the level of 0.05 μg/L~0.18 μg/L and 0.1 μg/kg~34 μg/kg in water and water sediment of the reservoirs, respectively. Based on the results, the residue of bisphenol A will be tried in the crops surrounding these agricultural reservoirs where bisphenol A detected above 10 μg/kg of bisphenol A.
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포도 과수원에서 살균제 Difenoconazole의 농작업자 노출량 측정
조일규 ( Ll Kyu Cho ),박준성 ( Joon Seong Park ),박소현 ( So Hyun Park ),김수진 ( Su Jin Kim ),김백종 ( Back Jong Kim ),나태웅 ( Tae Wong Na ),남효송 ( Hyo Song Nam ),박경훈 ( Kyung Hun Park ),이지호 ( Jiho Lee ),김정한 ( Jeong-ha 한국환경농학회 2016 한국환경농학회지 Vol.35 No.4
BACKGROUND: 18% of difenoconazole+iminoctadin triacetate microemulsion (3%+15%) formulation were mixed and sprayed as closely as possible to normal practice on the ten of farms located in the Youngju of South Korea. Patches, cotton gloves, socks, masks and XAD-2 resin were used to measure the potential exposure for applicators wearing standardized whole-body outer and inner dosimeter (WBD). This study has been carried out to determine the dermal and inhalation exposure to difenoconazole during preparation of spray suspension and application with a power sprayer on a grape orchard. METHODS AND RESULTS: A personal air monitor equipped with an air pump IOM sampler and cassette and glass fiber filter were used for inhalation exposure. The field studies were carried out in a grape orchard. The temperature and relative humidity were monitored with a thermometer and a hygrometer . Wind speed was measured using a pocket weather meter. All mean field fortification recoveries were between 97.3% and 119.6% in the level of 100 LOQ (limit of quantification) while the LOQ for difenoconazole was 0.025 μg/mL using HPLC-UVD. The arms exposure to difenoconazole for the mixer/loader (0.0794 mg) was higher than other body parts (head, hands, upper body, legs). The exposure to difenoconazole in the legs for applicator (3.78 mg) was highest in the parts of body. The dermal exposure for mixer/loader and applicator were 0.02 and 2.28 mg on a grape orchard, respectively. The inhalation exposure during application was estimated as 0.02 mg. The ratio of inhalation exposure to dermal exposure was equivalent to 0.9% of the dermal exposure. CONCLUSION: The inhalation exposure for applicator indicated 18.8×10<sup>-3</sup> mg, which was level of 0.9% of the dermal exposure (2.28 mg). Operator exposure (0.004 mg/kg bw/day) to difenoconazole during treatment for grape is calculated as 2.5% of the established AOEL (0.16 mg/kg bw/day).
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