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이재운 ( Jaewoon Lee ),권헌각 ( Heongak Kwon ),최한영 ( Hanyoung Choi ) 한국환경영향평가학회 2014 환경영향평가 Vol.23 No.5
influence area In this study, the nonpoint sources were evaluated by calculating the Nadonggang basin regional water quality and nonpoint source pollution load discharged. And were selected the banks of first administration based on the results and the direction of the next administration. As a results of estimating the water quality about BOD concentration in the mid influence area in the Nakdonggang basin, it was founded that 10 sites for ‘Ia’ water quality level, 6 sites for ‘lb’ water quality level, 5 sites for ‘Ⅱ’ water quality level, 1 sites for ‘Ⅰ’ water quality level. The estimation of COD concentration in the mid influence area, It showed that 9 sites for ‘Ib’ water quality level, 6 sites for ‘Ⅱ’ water quality level, 6 sites for ‘Ⅲ’ water quality level, 1 site for ‘Ⅳ’ water quality level. The assessment of water quality made Mid influence area of Gumhogang, Nakdong Goryung, Nakdong Milyang and Namgang selected as the mid influence area of high pollution. And delivery loads of nonpoint sources were calculated for mid influence area in Nakdonggang basin(max delivery load : 17,706.7 ㎏/day for Gumhogang influence area). As the result of calculating NPS(nonpoint sources) delivery load and water quality at influence area in Nakdonggang basin, Gumhogang influence area was selected as an area for management priority among nonpoint sources.
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일부 반도체 사업장 포토레지스트 화학물질 MSDS 정보의 신뢰성 분석
이경화 ( Kyunghwa Lee ),이석용 ( Seokyong Lee ),최윤지 ( Yoonji Choi ),최한영 ( Hanyoung Choi ) 한국산업보건학회 (구 한국산업위생학회) 2016 한국산업보건학회지 Vol.26 No.4
Objectives: This study aimed to examine and analyze the material safety data sheet(MSDS) information for photoresist chemicals used in certain processes in semiconductor plants. Methods: After collecting MSDS for 178 chemical products currently used in certain processes in semiconductor plants, we analyzed Sections 2, 3, 11, and 15 of each MSDS with reference to the guidelines for evaluating the reliability of MSDS provided by the Korea Occupational Safety and Health Agency. In addition, we reviewed the recorded uses and the ratios of trade secrets. Results and Conclusions: We studied a total of 178 chemical products. An MSDS was available for 176(98.9%) of them and all adhered to the Globally Harmonized System(GHS) regulations. There were 37 cases of errors in Hazard Identification, pertaining to 20.8% of all products surveyed. There were 64 cases of errors in the current legal circumstances, pertaining to 36.0% of all products. There were a total of 407 trade secrets across 52.2% of products. We believe that a government-led education and certification system needs to be introduced to improve the transfer of MSDS information. The government, chemical manufacturers and suppliers all need to make an effort to produce reliable MSDS.
ScienceON
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