• Proceedings of the Korea Water Resources Association Conference
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• 2017.05a
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• pp.519-519
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• 2017

우리나라는 국토의 65%가 산악지형으로서 유역경사가 급한 특성으로 인해, 강우발생 시 유하시간의 감소로 인한 홍수피해와 도시화와 산업화로 인한 수질오염에 매우 취약한 실정이다. 수질관리의 일환으로 환경부에서는 '4대강 물관리종합대책'과 '물환경관리 기본계획' 등을 발표하며, 유역단위의 통합적 물관리를 실시하고 있다. 물환경관리 기본계획의 단위유역 단위의 목표수질 달성을 위한 중요 정책적 실행수단으로서 수질오염총량제가 있으며, 관리대상 오염물질로서는 BOD, T-P만을 대상으로 하고 있다. 하지만 최근 환경부에서는 기존 BOD 중심의 유기물질 관리의 한계 극복과 환경기준 선진화의 일환으로서 수질 목표기준에 TOC를 설정하고 생활환경 기준에 질소의 도입을 추진하는 등의 경향을 볼 때, BOD와 T-P 중심의 목표수질 관리에는 한계가 있다고 판단되며, 이에 따라 현행 관리 대상물질 외 수질항목에 대한 다양한 분석방법이 필요하다. 본 연구에서는 청미천 본류의 환경부 물환경측정망 운영지점과 8개의 지류에 대해 2013년 6월부터 2015년 7월까지 8일 간격 수질 유량 자료에 대한 현장측정 자료를 이용하여 BOD, COD, SS 등 총 6개 수질항목에 대하여 FDC(Flow Duration Curve)와 초과율(Exceedance Rate) 분석을 실시하였다. 분석 결과를 바탕으로 각 지류에서 발생한 오염물질의 농도가 청미천 본류의 분류된 구간과 청미A 단위유역 말단에 미치는 영향에 대하여 분석하였다.

• Proceedings of the Korea Society of Environmental Toocicology Conference
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• 2003.10a
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• pp.97-117
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• 2003

통합 순위 목록과 여러 가지 지표에 의거한 개별순위 목록을 비교한 결과, 전반적으로 통합 순위 목록과 잘 일치하고 있었다. 또한 각각의 개별 순위 목록은 세부적인 목적에 따라, 충분히 활용될 수 있다. 이 연구에서는 EDCs에 포함되는 농약에 대해서는 우선 순위 목록(Priority List 2)을 분리하여 제시하였다. 이미 이들 물질은 국책 사업으로 충분한 관심을 가지고 연구가 진행되고 있기 때문에 현재 사용중인 농약을 중심으로 우선 순위 목록(Priority List 1)을 작성하고 분석하였다. 자료의 결손이 크면 클 수록, 우선 순위 결과에 대한 불확실성도 커진다. 따라서 이들 자료의 결손을 합리적인 방법으로 채워나가는 것이 매우 시급한 과제이다 그러나 이들 자료의 결손이 채워지면 일부 농약의 경우는 순위가 변할 수 도 있지만, 크게 일정한 범위 밖으로는 이탈하지 않은 것으로 생각된다. 따라서 통합 우선 순위중 1∼20순위를 우선적으로 관심을 가지고 관리해야 할 물질(high priority)로 구분하고, 그 다음으로는 21∼40순위를 그 다음으로 관심을 가지고 관리해야할 물질(Medium priority)로서, 나머지 물질을 Low priority물질(41∼52순위)로 분류할 수 있다(Figure 2 참조). 여기서 Low는 이들 물질에 대한 위험성이 낮다는 것을 의미하는 것이 아니고 상대적으로 High 보다 낮다는 의미이다.

• Clean Technology
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• v.19 no.4
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• pp.459-463
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• 2013

Recent rapidly growth in nanotechnolgies is promised novel benefits through the exploitation of their unique industrial and biomedical applications. In addition, these nanomaterials and nano-consumer products have increased in quantity per year, and thus their uncontrolled release into the environment is anticipated to grow dramatically in future. Many papers for cytotoxicity of nanomaterials have been already reported, and thus government supports has funded to various research topics for nanosafety. Herein, we analyzed the importance and performance of nanosafety researches and tried to show the research direction where we have to go.

• Journal of Wetlands Research
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• v.8 no.4
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• pp.23-31
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• 2006

The nonpoint pollutants are originated from various land uses. Of the landuses, the development means the changes of the soil cover and the increases of imperviousness rate, which will increase the nonpoint pollutant emissions during a storm. Therefore, the Ministry of Environment in Korea has programed TPLMS(Total Pollution Load Management System) for four major large rivers to improve the water quality in rivers by controling the total pollutant loadings from the watershed area. The study area was forest landuse before development plan, however it is now changing to the resort. Some of the forest areas will be changed to parking lots, roads and buildings. The paved areas are highly polluted landuses because of high pollutant accumulation rate by vehicle activities during dry periods. Therefore, this research is achieved to determine the changes of pollutant loading rate by development plan and to provide the best management practices for controlling nonpoint pollutants.

• The Korean Journal of Nuclear Medicine Technology
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• v.16 no.1
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• pp.108-114
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• 2012

Purpose: Immunosorbent assay most commonly used in the laboratory and commercial third-party quality control material is a substance that provided by BIO-RAD. However, in Reference Sheet by radioimmunoassay test kit or a measuring device for the mention of Acceptable Range is somewhat lacking. Radioimmunoassay for the inspection of test results by setting Acceptable Range to increase the objectivity of the recommendations on the data accumulated by the manufacturer listed in the Reference Sheet is to be issued. Materials and Methods : In our hospital since 2009 partially BIO-RAD using quality control materials in 2011, excluding certain items, some items were most of the BIO-RAD third-party quality control materials are used. Thus, internal quality control data accumulated BIO-RAD's Unity Real Time program by using the items were measured. Results : BIO-RAD using quality control material items were about 50 of the 20 Point Data averages, standard deviations, variation coefficients were calculated to measure the Acceptable Range of kit, automated immunoassay attributed Roche Elecsys / E170 / cobas e Systems the measures and compared. Conclusions : BIO-RAD QC materials commonly used hospital and peer group by setting the measurement kit, suitable for laboratory equipment for radioimmunoassay of Acceptable Range manufacturer recommendation to increase the objectivity of the test results by national and international recognition for radioimmunoassay should seek to increase.

• Journal of Convergence for Information Technology
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• v.11 no.4
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• pp.122-129
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• 2021

As the total organic carbon (TOC) becomes a new water quality standard as an organic matter (OM) index for public sewage treatment facilities (PSTFs) in Korea from 2021, a comparison study needs to be conducted by examining the correlation between TOC and the existing OM indices (DOC, BOD5, CODMn, CODCr). 500 PSTFs were categorized by process configuration and capacity, and correlation between OM indices in influent and effluent was analyzed. The CODMn/TOC showed higher correlation than other OM indices. This results can be used to basic data for various research associated with TOC.

• Journal of the Korean Institute of Gas
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• v.28 no.1
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• pp.35-43
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• 2024

With continuous advancements in industry, science, and technology, there is a steady increase in the number and utilization of new chemicals. The growing societal emphasis on chemical safety management is paralleled by an increasing public demand for robust safety measures. While various ministries at the government level oversee the safety management of chemical substances, the occurrence of accidents related to chemical substances remains frequent each year due to problems such as aging facilities and careless handling. Upon analyzing domestic chemical accident cases, incidents occurred predominantly in the sequence of leakage, explosion, fire, and others. The main causes of these accidents were examined, revealing facility defects and non-compliance with safety management as the primary contributing factors. In this study, Hazard and Operability Analysis (HAZOP) was employed to identify hazardous risk factors associated with the handling of hydrofluoric acid in workplaces, and a risk assessment was performed using Bow-Tie method. Based on the results of this study, it is expected to enhance safety management plans aimed at preventing chemical accidents in workplaces dealing with similar facilities. Ultimately, these insights contribute to the development of an advanced chemical safety management system, capable of proactively preventing potential chemical accidents.

• Journal of Korean Society on Water Environment
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• v.28 no.6
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• pp.896-901
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• 2012

In this research, the levels of concentrations from the junction of effluent from wastewater treatment plant during dry days and combined with runoff from the surrounding 11 ha livestock catchment area during wet days were determined to investigate the relationships of the concentration of various pollutants such as particulates, nutrients and organics originating from point and nonpoint sources. Manual sampling was conducted from October 2008 to December 2011 during dry and wet days. Based on the results, the flow rates and concentrations of most pollutant parameters were increased during wet days. It was found out that the effluent wastewater combined with stormwater runoff has low BOD to TN/TP ratio and high TN/TP to BOD ratio. Therefore, it is needed to employ other treatment methods to effectively manage the wastewater and reduce the pollutant discharge to receiving water bodies.

• Journal of the Society of Disaster Information
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• v.9 no.2
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• pp.123-127
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• 2013

Chemicals only likely illegally, depending on the user's intention can be used for malicious purposes. In addition, these chemicals are chemicals, and readily available for purchase on, through a simple mixing ratio to home made bomb manufacturing can be. In this study, to illegally division the list of chemicals and the chemical when handling the regulatory status and distribution system, identify and propose effective management plan prepared. Presented by foreign chemicals management, including a list of relevant laws and illegal sales activities on the Internet the eradication measures were collected, and chemical substance management system improvement and response system (proposition) for material to be used as maintenance is expected.

• Korean Chemical Engineering Research
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• v.60 no.4
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• pp.506-511
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• 2022

In the Chemicals Control Act, a system was implemented to unify off-site risk assessment and risk management plan into the prevention and management system for chemical accidents. Among the hazardous chemicals which have been covered in system, the accident preparation substances are designated as chemical substances that are likely to occur and of which damage scale are likely to be large in the event of chemical accidents. In this study, risks were compared by selecting accident preparation substances with similar regulated quantities. In addition, risk assessment studies were conducted applying the accident scenarios. Four types of materials such as ammonia, hydrogen chloride, carbon disulfide and benzene were selected for the study, and risks were finally analyzed using Safeti 8.0, a quantitative risk assessment program by DNV. As a result, some materials are identified to have high risks comparing to other substances having similar regulated quantities.