• Title/Summary/Keyword: 석면

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A study on development of CRM chrysotile in soil (토양 중 백석면 표준물질 개발에 관한 연구)

  • Choi, Yun-Ho;Kwon, Ye-Bin;Lee, Jin-Wook;Kim, Nam-Jun;Jeong, Min-Jong;Hwang, Beom-Goo;Lee, Jae-Hyung;Sun, Yle-Shik;Kim, Bak-Gil
    • Analytical Science and Technology
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    • v.26 no.1
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    • pp.91-98
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    • 2013
  • Interested in NOA (Naturally Occurring Asbestos), Korea as well as the USA has been making geologic maps of asbestos distributed mines and surrounding areas, restoring mines, evaluating hazard, and so on. The result can be used to improve the reliability of analysts and analysis institutions by judging the amount of asbestos and set up PLM(Polarizing Light Microscope) information by analyzing in soil. The certification value of 2 kinds of CRM(Certified Reference Material) was performed by counting total 400 points with EPA 600-R-93-116 method using by PLM. The following is the result of homogeneity and stability of 2 kinds of manufactured CRM analyzed by ANOVA (Analysis of variance) and Regression Analysis. Based on the analyzation, the results are satisfied with homogeneity and long-term stability. The analyzed certification value of CRM includes the range of minimum and maximum value of point counting result for chrysotile; low concentration-1% (range, 0.25~3.00), high concentration-4% (range, 2.25~5.50).

Health Risk Assessments using GIS Method for the Abandoned Asbestos Mines (GIS 기법을 이용한 폐석면 광산의 위해성 평가)

  • Choi, Jin-Beom;Son, Ill;Noh, Jin-Hwan
    • Journal of the Mineralogical Society of Korea
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    • v.24 no.1
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    • pp.43-53
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    • 2011
  • Health risk assessments for the abandoned asbestos mine were usually performed with activity-based sampling (ABS) method, which was not a effective tool for indexing health risk on an exact small area of mine. A newly proposed potential index of health risk (PIHR) was applied with proper spatial determination of geographical information system (GIS) to assess quantitatively health risks. A new trial was applied to a certain abandoned mine in Boryong as follows: A high grade area of PIHR was estimated 7.8% of the whole area of the mine (about 27.3 ha). Based on US EPA IRIS (integrated risk information system) model considering lifetime excess cancer risk (LECR), the health risk assessment indicated that the high grade area increased from 3.0 ha through 12.9 ha to 19.5 ha with an increase of asbestos contents in soil from 0.36% (1E-04 level) through 0.1% (3E-05 level) to 0.04% (1E-05 level). These results can be effectively applied to determine reclamation area of the abandoned asbestos mine.

Microstructure of Spider Booklung as Bio-indicator for Monitoring Environmental Asbestos Exposure (거미 서폐의 미세구조와 석면노출 환경의 모니터링을 위한 생물지표적 유용성 평가에 관한 연구)

  • Kim, Chang-Mo;Moon, Myung-Jin
    • Korean Journal of Environmental Biology
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    • v.32 no.1
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    • pp.49-57
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    • 2014
  • Orb-web spiders can be considered as an effective bio-indicative animal to monitor the ecological air pollution of certain habitat since they have limited shifting ability during their life spans. In this study we revealed the fine structural characteristics of booklung in the orb-web spider Nephila clavata, and its bio-indicative significance in the monitoring environmental asbestos exposure. The high resolution scanning electron microscopy results suggest that the cuticular spikes near the atrium could be act as an effective filtering structure for dust materials. Furthermore, inner cuticular spikes which protruded across the air sacs, have the functions not only sustaining appropriate respiratory volume of each air sac but also help to enhance respiratory capacity by maximizing the gross surface area for gas exchange. Interestingly, in spite of short exposure, the asbestose fibrils were effectively captured on the surface of the atrial cuticular spikes. Furthermore, histologic damages were observed due to penetration of asbestos fibrils through air sacs and fixed on the hemolymph space. In addition, although accumulated mass of hemocytes were observed near the fibrils, there were no asbestos bodies or coagulated hemocytes were found on the surface of the fibrils, This could be mainly due to the short exposure period towards asbestos. Briefly, these results indicate the spider's booklung could be valuable tool in the detection ecological air pollutants.

POLICY & ISSUES 환경정보 - 2012년부터 달라지는 환경행정

  • 환경보전협회
    • Bulletin of Korea Environmental Preservation Association
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    • s.397
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    • pp.28-31
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    • 2012
  • 2012년 1월부터 국민의 건강보호를 위해 실내공기질 적용대상 다중이용시설이 추가되며, 석면의 안전한 관리를 위한 석면안전관리법이 공포된다. 또한 저탄소 녹색성장기본법에 의한 온실가스 에너지 목표관리제의 적용대상인 관리업체 지정기준이 강화되며, 수계로 배출되는 유해물질의 독성을 통합관리하여 건강한 수생태계 보호를 위해 도입된 "생태독성(TU) 관리제도"가 3-5종 사업장까지 확대 시행된다. 2012년부터 달라지거나 새롭게 시행되는 환경행정 내용을 정리하였으니 업무에 참고하시기 바랍니다.

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