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개인보호장구(PPE)의 사용현황 조사 및 Atomizer 측정에 의한 국내 농약 방제복의 침투성 평가
송종욱(Jong-Wook Song),김종환(Jong-Hwan Kim),조유진(Yu-Jin Cho),김정한(Jeong-Han Kim),박경훈(Kyung-Hun Park),서종수(Jong-Su Seo) 한국농약과학회 2017 농약과학회지 Vol.21 No.4
This study was carried out to investigate the use of Personal Protective Equipments (PPEs) and evaluate the penetration of nine commercially available personal protective clothing and one general shirt based on the ISO 22608 guideline and EN14786 guideline. From the results of the survey, the use of the mask was highest as 67.1% and the goggles was the lowest as 20.7% when they use and handle the pesticides, indicating that most of farm workers did not use PPEs for their heath. In the measurement of penetration using the Atomizer test, the results for the penetration of pendimethalin showed that the penetration of the shirt, F6 (cotton 35%+polymer 65%, porous material, twill weave) and F7 (polyester 100% (polymer coating), porous material) were greater than 51.9%, and for tebuconazole, that of the shirt was 48.1%. Other results were lower than 5.5% and 0.1% of the penetration. This study showed that some clothing were not suitable for use since the ISO guideline requests penetration of 5% as suitable for personal protective clothing. Therefore, it is likely to be necessary to perform penetration measurement methods for the use of suitable protective clothing.
임상연구 : 성상신경절 차단이 돌발성 난청의 치료에 미치는 영향
송종욱 ( Jong Wook Song ),심재광 ( Jae Kwang Shim ),문진천 ( Jin Cheon Moon ),안은경 ( Eun Kyoung Ahn ),금창만 ( Chang Man Kum ),윤덕미 ( Duck Mi Yoon ),이원상 ( Won Sang Lee ),신증수 ( Cheung Soo Shin ) 대한마취과학회 2006 Korean Journal of Anesthesiology Vol.51 No.1
Background: Idiopathic sudden sensorineural hearing loss (ISSNHL) is defined as a sensorineural hearing loss which develops abruptly without definitive causes. Stellate ganglion block (SGB) has been used as one of the treatment modalities in ISSNHL. However, published data establishing the effect of SGB has been slim. We conducted this study to evaluate the effect of SGB according to the factors that may influence the prognosis of the disease. Methods: We reviewed the records of 343 patients. The control group was managed with medications, and the SGB group was managed with SGB and the same medications. SGB was performed with 5 ml of 1.0% mepivacaine. The pure-tone audiogram was performed after the therapy and Siegel`s criteria was used to define the recovery of hearing. Results: The recovery rate of the SGB group was higher than that of the control group (58.1% vs. 42.1%, P < 0.05). The SGB group had a higher recovery rate than the control group in patients treated within 7 days from the onset of symptoms (66.9% vs. 44.1%, P < 0.05), without diabetes mellitus (58.5% vs. 44.9%, P < 0.05), without dizziness (61.6% vs. 44.6%, P < 0.05), or whose initial hearing loss was between 71 and 90 dB (69.4% vs. 38.9%, P < 0.05). Conclusions: SGB is thought to be a useful therapy for ISSNHL, especially in the patients treated within 7 days, without diabetes mellitus, dizziness, or whose initial hearing loss was severe. (Korean J Anesthesiol 2006; 51: 52~7)
김종환 ( Jong-hwan Kim ),조유진 ( Yu-jin Cho ),송종욱 ( Jong-wook Song ),김정한 ( Jeong-han Kim ),서종수 ( Jong-su Seo ) 한국환경농학회 2016 한국환경농학회지 Vol.35 No.4
BACKGROUND: The personal protective equipments (PPEs) is the most important factor for reducing the pesticide exposure during the preparation and spraying of pesticides. This study was to investigate the retention, repellence and penetration of protective clothing of PPEs according to the ISO 22608 `Liquid penetration resistance-pipette test. Protective clothing for agriculture worker is very important for their health. However, test method for measurement of protective clothing is not presented in Korea. METHODS AND RESULTS: In order to measure the retention, repellence and penetration of protective clothing, a apparatus for pipette method in accordance with the ISO Guideline was prepared. The test was conducted at 25±5℃, 60±10% of relative humidity and pipette applied to a apparatus was validated to take exact amount(0.2 mL). The retention, repellence and penetration of five types of protective clothing and one type of shirt were analyzed by GC/MS. Pendimethalin(5% a.i, emulsion) was used as a test pesticide to measure above factors. The retention were less than 11.0% with the exclusion of two types(F4 and shirt) and the repellency was more than 67.0% with the exclusion of shirt material. The penetration was less than 5.4%, however, that of shirt was 66.7%. CONCLUSION: This results indicated that all protective clothing were suitable to use as PPEs according to the criteria specified by ISO Guide 22608. However, shirt was not suitable due to high penetration. This test method established for measurement the retention, repellence and penetration of protective clothing will help to establish the test notice of pipette method.
김종환 ( Jong-hwan Kim ),조유진 ( Yu-jin Cho ),송종욱 ( Jong-wook Song ),서종수 ( Jong-su Seo ) 한국환경농학회 2016 한국환경농학회 학술대회집 Vol.2016 No.-
농약 살포용 방제복은 농작업자의 노출을 감소시키는 가장 중요한 요인이며 농약 방제복에 대한 침투저항성 시험법으로는 분무법, 피펫법, Gutter법, 가압조건 측정법이 있다. 미국 및 유럽 등은 ASTM F-2669, JIST 8126, DIN 32781 및 EN/ISO 27065의 농약 방제복 성능기준 표준시험방법에 따라 침투저항성 및 투과저항성을 측정하고 있다. 하지만 국내에서는 농약 방제복에 대한 측정시험법이 마련되어 있지 않는 실정이다. 본 시험에서는 국내에 시판되고 있는 농약 방제복이 국제적인 지침서에 요구하는 성능시험에 만족하는지 확인하기 위해 다양한 시험법 중에서 피펫법에 대한 시험법을 확립하고 국내 농약 방제복에 대한 농약 침투성을 측정하였다. 국내에 시판되는 농약 방제복 중 다양한 재질로 구성된 9개의 제품을 선정하여 방제복 솔기(seam)부분의 침투성을 확인하였으며 ISO-22608 지침서 내 피펫법의 분석법과 중량측정법을 적용하여 측정하였다. 5% EC pendimethalin을 이용하여 침투성을 확인하였으며, GC/MS 분석법 확립을 위한 시험편과 흡습지에 대한 회수율은 95.2~106.2%로 매우 우수하였다. 중량측정법의 경우에는 시험편과 흡습지의 mass balance가 92.5~97.7%로 지침서에서 요구하는 기준에 만족하였다. 9개 제품에 대한 GC/MS 분석법에 의한 침투성은 0.2~18.9%였으며, 중량측정법에 의한 침투성은 0.0~31.9%였다. 서로 다른 2종류의 측정결과를 비교하였을 때, 유사한 값을 나타내는 제품이 있는 반면, 중량측정법에서 상대적으로 높은 침투성을 나타내는 제품도 있었다. 이는 측정방법에 따라 발생되는 침투성 차이와 방제복 원단의 수분 보유력 및 솔기부분의 벤딩방식에 따른 차이인 것으로 판단된다. 농약 방제복의 침투성을 측정하는 시험 중의 하나인 피펫법에 의한 시험을 통해서, 국내에 시판되는 농약 방제복중에서 국제적인 지침서에서 요구하는 침투성 허용기준을 초과하는 제품이 있는 것으로 확인이 되었으며, 국내에서도 농약 방제복에 대한 성능기준을 측정하고 판단하는 정책지침이 필요할 것으로 판단된다.
갯기름나물 중 살균제 Azoxystrobin, Fluxapyroxad, Penthiopyrad의 잔류 특성
김영진(Yeong-Jin Kim),송종욱(Jong-Wook Song),최성길(Sung-Gil Choi),김종환(Jong-Hwan Kim) 한국농약과학회 2021 농약과학회지 Vol.25 No.4
This study was conducted to evaluate the residual characteristics and biological half-life values of three fungicides: azoxystrobin, fluxapyroxad, and penthiopyrad and their metabolites: R230310, M700F048, M700F002, 753-A-OH, and PAM on Peucedanum japonicum Thunb. The LC-MS/MS analysis for the pesticides and metabolites was validated in terms of the limits of quantification, linearity, accuracy, and precision using the QuEChERS method. The method limit of quantification (MLOQ) was 0.01 mg/kg and the accuracy and precision ranged 73.8 to 113.7% and less than 8.4%, respectively. The study was carried out in a greenhouse and azoxystrobin 21.7% SC, fluxapyroxad 15.3% SC, and penthiopyrad 20% EC were sprayed three times on different application days before harvest. As a result, the initial residual concentration of azoxystrobin in the sample collected on the day of the final application was 18.06–19.79 mg/kg, then decreased to 87.2% in the harvested sample at 21 days after the final application compared to the initial concentration. The initial concentrations of fluxapyroxad and penthiopyrad were detected as 8.13–9.19 and 3.09–3.49 mg/kg, which decreased to 89.1 and 84.6% after 21 days, respectively. The biological half-lives of each pesticide based on the results of this experiment were 10.7 days for azoxystrobin, 8.2 days for fluxapyroxad, and 10.2 days for penthiopyrad. Three pesticides used for the control of powdery mildew in Peucedanum japonicum Thunb showed a similar decrease over time.
배추에 살포된 살충제 Methoxyfenozide와 Pymetrozine의 잔류량 변이에 관한 평가
조유진 ( Yu-jin Cho ),김종환 ( Jong-hwan Kim ),송종욱 ( Jong-wook Song ),정성훈 ( Seong-hoon Jeong ),정정훈 ( Jung-hoon Jung ),서종수 ( Jong-sue Seo ) 한국환경농학회 2022 한국환경농학회 학술대회집 Vol.2022 No.-
본 연구는 살충제 Methoxyfenozide와 Pymetrozine을 배추에 살포 후 각 지역별 농약잔류량을 분석하여 비교하며, 잔류량 변이에 관해 평가하고자 하였다. 시험지역은 경상남도 진주와 김해의 포장에서 수행하였으며, Methoxyfenozide (21% 액상수화제, 런너)는 2,000배 희석하여 살포, Pymetrozine (50% 입상수화제, 미네토스타)은 5,000배 희석하여 살포하였다. 수확 후, 배추 시료를 가공한 다음 LC/MS/MS를 사용하여 잔류량을 분석하였다. Methoxyfenozide의 회수율 및 RSD는 80.0∼104.0%, 1.3∼6.6%이었으며, Pymetrozine은 99.0∼120.0%, 0.0∼7.2% 이었고, 검출한계 및 정량한계는 각각 0.005, 0.01 mg/kg이었다. Methoxyfenozide의 초기농도는 진주와 김해에서 각각 1.33, 1.12 mg/kg이었으며, 처리 후 14일 경과 시 잔류농도는 각각 0.02, 0.59 mg/kg으로 98.5, 47.3% 감소하였다. Pymetrozine의 초기농도는 진주와 김해에서 각각 0.48, 3.02 mg/kg이었으며, 14일 후 잔류농도는 각각 0.02, 0.25 mg/kg으로 95.8, 91.7% 감소율을 보였다. 시험농약의 반감기는 Methoxyfenozide의 경우 진주와 김해에서 각각 2.3, 11.7일, Pymetrozine의 경우 2.7, 3.7일 이었으며, 두 지역의 잔류량 및 소실률의 차이는 시험지역의 재배시기와 환경적인 요인에 의해 발생할 것으로 판단된다.