• 한국연소학회:학술대회논문집
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• 한국연소학회 2014년도 제49회 KOSCO SYMPOSIUM 초록집
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• pp.337-338
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• 2014

In this study, a method of using a capacitance sensor was investigated as a means to measure the mass fraction of a type of harmful substance. Using MEMS process, we developed a capacitance sensor and studied the real time mass fraction with harmful substance mixture liquid.

• 한국화재소방학회논문지
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• 제28권6호
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• pp.90-98
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• 2014

최근 우리나라의 유해화학물질 사고는 반복적으로 재현되고 있다. 본 연구에서는 2008년~ 2014년 기간 동안 유해화학 물질 사고사례의 분석을 통해 유해화학물질의 문제점 및 대처방안에 대하여 조사했다. 우리나라의 유해화학물질 사고의 현황 중 유출에서는 작업장 내에서 유출이 2008년 58.6% (10건)으로 가장 높았고, 폭발에 따른 유출은 2004년 50%(5건), 2007년 25% (4건), 2011년 33.3% (4건)로 불규칙적으로 발생하였다. 유해화학물질의 대부분의 원인은 안전관리 미흡에서 발생하는 것으로 이해된다. 유해화학물질은 다양한 양상을 띠며 잔류성이 매우 높고 비가시적인 특징 때문에 대응 및 복구에 어려움이 많고, 먼 거리까지 이동해 제2의 피해인 환경오염을 일으킨다. 이에 유관기관의 공조체제 및 통합적인 시스템을 구축하여야 하고, 화학사고대응전문기관과 화학물질 대응 치료전문기관을 설립해 효율적이고 신속한 대응을 하여야 한다.

• 한국화재소방학회논문지
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• 제28권6호
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• pp.108-113
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• 2014

유해물질처리를 효율적으로 개선하기 위해 슬라이딩아크방전(sliding arc plasma)과 corona dielectric barrier discharge(CDBD공정)의 복합공정을 이용하였다. 이장치는 OH 라디칼과 음이온을 생성하여 강력한 산화력으로 탈취 및 살균 효과를 가진다. 실험결과 SAP 반응기의 크기를 80 A를 50 A로 축소하여도 유해물질의 농도는 큰 변화가 없는 것으로 나타나 반응기의 규모를 최소화할 수 있을 것으로 판단된다. 그리고 CDBD 반응기에서 생성된 음이온과 오존은 유해물질과 반응한 후 음이온은 510,000 ppb에서 470 ppb, 오존은 98 ppb에서 22 ppb로 낮아짐을 확인하였다. 또한 플라즈마 발생장치의 안정성 및 내구성이 우수한 것으로 판단되었다. 따라서 본 연구를 통하여 향후 플라즈마복합공정을 이용하여 실내공기중에 존재하는 유해물질 제거를 효율적으로 할 수 있을 것으로 생각된다.

• Environmental Analysis Health and Toxicology
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• 제21권2호
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• pp.173-184
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• 2006

From the harmfulness expectation test conducted through a toxicity anticipation program, methylcyclohexane turned out to be harmful and simulative, but no carcinogenicity was anticipated. In a four-hour acute inhalation toxicity test, the result showed that lethal concentration ($LC_{50}$) was 3,750 ppm (15,054 mg/L), which was identified as a harmful substance on the basis of the harmful substance classification standard $2 of the Industrial safety and health law. methylcyclohexane fell under the category $4(2,500 substance from the GHS standard acute toxicity harmfulness classification. Also, from subchronic inhalation toxicity test that included 6 hours a day, five days a week, and for 13 weeks, we could observe weight, activity, long term weight, blood and blood biochemical influence from the exposure of test substance. No-observed effect level (NOEL) was determined below $100{\sim}400ppm$ inboth male and female. This material falls under the Category 2 ($50{\sim}250ppm/6hours/90days$) in the GHS (Globally Harmonized System) standard trace long-term whole body toxicity repeated exposure, and can be classified as a harmful substance in accordance with the Industrial Safety and Health Law harmful substance standard $NOEL{\leq}0.5mg/L/6hr/90day$ (rat).

• 대한예방한의학회지
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• 제3권2호
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• pp.91-100
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• 1999

Today, toxicology is used for many purpose, in many fields. Classification of special toxic effect is related next 4 important principles. 1. The chemical substance must move to target organ or tissue that can induce Biological effect. For this movement, we have to understand the physical-chemical characteristic of substance, and the rout of absorption, metabolism, diffusion and excretion of toxic substance. 2. Every biological effect that induced by chemical substance is not harmful. For example, some specific chemical substance is not harmful in liver enzyme system. 3. The strength of biological effect induced by chemical substance is deep related with dose. Nearly all substance is not effective below the specific dose, and it may toxic to death over the specific dose. It is the 'Dose - response relationship' But carcinogen may toxic whether it is law dose or not. 4. The information that was obtained by experimental animal test, could have to adapt in human biology. Because biological effect of chemical substance could be different in every biological species. In past, drugs was obtained by animal or plants. But in the future, it could be obtained by biochemistry, and genome project. Therefore, in Oriental medicine, research and approach is needed at this time, and have to develop new method of experience in toxic method.

• 아동학회지
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• 제30권6호
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• pp.125-137
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• 2009

This study reviews facts and trends of harmful environments in the last decade that negatively affected children's development. Younger children have been exposed to harmful media, drugs, facilities, and objects. A matter of chemical substances contaminating in-door air has become quite controversial, recently. In order to provide a better understanding of harmful environments against children, there are great needs for a survey covering all ages based on the clear definition of the term harmful environments, research identifying its causal effects on child development in the context of both parent-child and peer relationships, and a longitudinal study processing its effects in a life-span perspective. It is suggested that by providing parent education and a plenty of cultural facilities as social efforts to create sound family culture, psycho-social and physical environments of children are improved. Furthermore, legal regulations and supervision on harmful environments are needed to be strengthened.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2022년도 봄 학술논문 발표대회
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• pp.105-106
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• 2022

In this study, the classification, particle size, physical properties, and harmful substance contents of aggregates were compared in the standards between Korea and China. As a result of the analysis, although Korea and China are geographically adjacent from a global perspective, there are many differences in standards. In other words, it is analyzed that the standard was set due to the influence of the United States and Japan in Korea, while the standard was set due to the influence of Europe and Russia in China.

• 한국의류학회지
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• 제29권6호
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• pp.814-824
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• 2005

This study analyzed and standardized the harmful substances of organic compounds(dioxins) in disposable diapers for infant's clothing. Commercial samples obtained from Korea, Japan, America and German were determined by HRGC/HRMS. Experimental Methods were consisted of comparision of extracting solvent, analysis of PCDD/Fs, and analysis of PCDD/Fs of extraction in disposable diaper. The results were as follows. No high TEQ values in TCDD(1), PCDD(0.5) and HxCDD(0.1) were found for commercial disposable diapers from country Korea, Japan, U.S.A and German. In extraction for 6hrs experiments, HpCDD and OCDD were detected in disposable diapers of U1, U2 and G2, respectively. In extraction fur 24hrs experiments, HpCDD, OCDD and OCDF were detected in disposable diapers of J3, U1, U2 and U3. So we need to set standards of measurement for harmful materials contained in textile goods. This will make a safe and comfortable clothing environment for all users, regardless of age.

• 한국산업보건학회지
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• 제17권1호
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• pp.63-70
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• 2007

This study investigated the current management staus of chemical substance information on Material Safety Data Sheets(MSDS) and Chemical Information Cards(CIC) provided by Korea Occupational Safety & Health Agency(KOSHA) and also researched the kind and the characteristics of chemical substance information provided in other organizations. MSDS DB in Korean provided on KOSHANET(which is Kosha website) is 50,802 in total, among whom are single chemical substances with 31,870 kinds(18,932%) and are mixed chemical substances with 31,870 kinds(62.7%). The number of visiting MSDS DB on KOSHANET for the search of chemicals was 2,049,806. The number has increased each year. The CIC provided for workplaces is all 542 kinds : 14 harmful substances subject to permission, 168 harmful substances subject to management, 360 KOEL(Korean Occupational Exposure Limits) establishment substances. MSDS internationally provided by organizations producing MSDS DB was written with 16 sections, which is suitable for the writing basis of American Standards Institute(ANSI) and International Organization for Standardization(ISO) and provided chemical substance information on more than 100,000 kinds in most organizations.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1997년도 추계학술대회 논문집
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• pp.556-559
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• 1997

This paper describes the development process of mosquito trap with the effect of air cleaning by using the substance-field analysis and evolution pattern of systems in the theory of inventive problem solving (TRIZ). By the concept of standard solution about introducing S3 substance, modification of S1 (human) and S2 (mosquito) between first substance SI and second substance S2 with harmful effect, we got the concept of the mosquito trap with mosquito attractants instead of mosquito reluctants such as mosquito stick coil and skin medicine w~th bad and toxic smell. The number of mosquitos traped by one trap near cattle shed per one n~ght in summer, was over 10 thousands with some effects of air cleaning.