• Proceedings of the Korean Environmental Sciences Society Conference
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• 2002.05b
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• pp.314-316
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• 2002

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2004.11a
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• pp.180-181
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• 2004

• Proceedings of the Korea Air Pollution Research Association Conference
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• 1998.10a
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• pp.138-139
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• 1998

• 식품위생정보
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• s.223
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• pp.13-16
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• 2009

• Economic and Environmental Geology
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• v.36 no.3
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• pp.171-176
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• 2003

The fate and behavior of polycyclic aromatic hydrocarbons(PAHs) and heavy metals in the environment are mainly controlled by their interactions with various components of soils and sediments. Due to their large surface area and abundance in many soils, smectites may greatly influence the fate and transport of the contaminants. In our experiment, PAH sorption by hexadecyltimethylammonium(HDTMA)-modified smectite linearly increased in proportion to the amount of HDTMA added on the clay. However, trimethylammonium(TMA)-modified smectite did not show superiority in its sorption of PAH compared with the HDTMA-smectite or dodecyltrimethylammonium(DTMA)- smectite. Meanwhile, the smectites modified with the same cationic surfactants adsorbed Cd$^{2＋}$(heavy metal) significantly from water at low surfactant loading level, but the Cd$^{2＋}$ adsorption linearly decreased as the loading of surfactant increased. The result shows that the sorption tendency of organoclays for organic or inorganic contaminants was significantly influenced by the amount and size of the surfactants added on the clay. This reveals that the stabilization and configuration of cationic surfactant formed on the clay interlayer of different sizes may be an important factor in controlling the sorptive capacity of each pollutant in the environment.

• Journal of Environmental Impact Assessment
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• v.30 no.2
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• pp.132-139
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• 2021

Laboratory-scale experiments were conducted to assess the effect of oxidative decomposition of polycyclic aromatic hydrocarbons (PAHs) in field soil using peroxy-acid. The study soil texture is sandy soil containing 19.2 % of organic matter at pH 6.8. Among polycyclic aromatic hydrocarbons (PAHs) in the study soil, the concentration of benzo(a)pyrene is 2.23 mg/kg which is three times higherthan the Korea standard level. Therefore benzo(a)pyrene was selected as the target study PAH for the treatment by peroxy-acid oxidation using peroxy-acid coupled with hydrogen peroxide, and the efficiency of the oxidative decomposition of benzo(a)pyrene was assessed for the different organic acids and dosages of an organic acid and hydrogen peroxide. Propionic acid among the tested organic acids showed the highest efficiency of benzo(a)pyrene reduction in the peroxyacid oxidation treatment and finally satisfied the Korea standard level.

• Proceedings of the KAIS Fall Conference
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• 2011.12a
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• pp.273-274
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• 2011

본 논문에서는 보건환경적 영향 및 환경오염수준을 평가할 수 있는 공단지역의 대기 시료를 이용하여 다환방향족탄화수소화합물(PAHs)의 농도수준과 인체 영향 및 분포특성에 관하여 조사하였다. 산업공정 및 공단 주변지역 오염물질의 저감 및 개선을 위한 방안을 마련할 수 있는 기초자료를 확보하였으며, 다음과 같은 결론을 얻었다. 공단지역의 대기시료 중에 다환방향족탄화수소화합물(PAHs) profile은 Pyrene, Naphthalene과 Anthracene 같은 저분자량 화합물은 주요 인자로 나타났고, Phenanthrene의 농도가 지배인자로 나타났다. 향후 보다 과학적이고 체계적인 연구가 추가적으로 이루어져야 할 것으로 판단된다.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2003.05b
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• pp.83-84
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• 2003

벤젠고리의 수가 2∼3개인 저분자 PAHs는 대체적으로 급성 독성을 나타내고, 고분자인 벤젠고리 4∼6개의 PAHs들은 대부분 발암성 및 돌연변이성 물질로 알려져 있다. 이러한 PAHs들은 화석연료의 불완전 연소 등에 의해 발생되고, 대표적인 오염원으로는 석탄, 자동차, 가정 난방 등이 있다. 대기 중의 다환방향족탄화수소(PAHs) 농도는 지역별, 계절별로 큰 차이를 나타내며, 일반적으로 차량 통행이 많은 대도시나 공단지역이 높고 계절적으로는 연료사용이 많은 겨울철에 높은 농도를 보인다. PAHs는 다양한 고정 배출원 및 이동배출원에서 발생하기 때문에 동일 배출원에 영향을 받더라도, 지역에 따라 농도 및 조성비가 달라질 수 있다(백성옥, 1999; Simcik et al., 1999). (중략)

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 1997.06a
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• pp.110-110
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• 1997

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 1997.11a
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• pp.158-158
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• 1997