한국산업보건학회지 (Journal of Korean Society of Occupational and Environmental Hygiene)

  • 제24권2호
  • /
  • Pages.146-151
  • /
  • 2014
  • /
  • 2384-132X(pISSN)
  • /
  • 2289-0564(eISSN)
한국산업보건학회 (Korean Industrial Hygiene Association)
권호 표지
DOI QR코드

DOI QR Code

한국산 석면의 산 용해도 평가 연구

Assessment of Acid Solubility Test on Korean Asbestos by Transmission Electron Microscope Equipped with Energy Dispersive X-ray Spectrometer

  • 정용현 (산업안전보건연구원 독성연구팀) ;
  • 한정희 (산업안전보건연구원 독성연구팀)
  • Chung, Yong Hyun (Toxicity Research Team, Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency) ;
  • Han, Jeong Hee (Toxicity Research Team, Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency)
  • 투고 : 2014.03.20
  • 심사 : 2014.06.11
  • 발행 : 2014.06.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Objectives: Chrysotile is mineralogically distinct from amphiboles, displaying a notably different chemical structure. The thin sheets that form chrysotile fiber lead to the ability of the lung/macrophage system to decompose the chrysotile fibers. This study was performed in order to compare the physicochemical characteristics of Korean asbestos with those of Canadian amphiboles. Materials: An acid solubility test for each test substance was done to compare pH 4.5 and pH 1.2 distilled water. Asbestos fibers which had been placed in acid solutions for five days, five weeks and weeks were analyzed with a transmission electron microscope equipped with an energy dispersive X-ray spectrometer (TEM-EDS). Results: The composition element (Mg) of Korean chrysotile, Korean anthophyllite and Canadian amosite significantly decreased from 5 days and also decreased significantly after 5 weeks and 10 weeks. Only the composition (Mg) of Canadian crocidolite did not change under any conditions. From 5 days, the Mg of Korean chrysotile, Korean anthophyllite and Canadian amosite were significantly lower than before the acid treatment, but there were no changes over time or by the pH of the acid solutions. Particularly after 10 weeks, the composition (Mg) of Korean chrysotile in the pH 1.2 acid solution showed a rapid reduction of 15.86%. Conclusions: Korean chrysotile was very weak in an acid environment, beginning to show significant changes after 5 days. The Mg component rapidly decreased after 10 weeks in the pH 1.2 acid solution.

키워드

참고문헌

  1. Bernstein D, Dunnigan J, Hesterberg T, Brown R, Velasco JA, et al. Health risk of chrysotile revisited Crit Rev Toxicol 2013 Feb;43(2):154-83 https://doi.org/10.3109/10408444.2012.756454
  2. Cressey BA, Whittaker EJW. Five-fold symmetry in chrysotile asbestos revealed by transmission electron microscopy. Mineral Mag 1993;57:729-32 https://doi.org/10.1180/minmag.1993.057.389.17
  3. Chung YH, Han JH, Kang MK. Dose-response assessment and physicochemical characteristics on Korean chrysotile. Occupational Safety & Health Research Institute; 2013. p. 3
  4. Larsen G. Experimental data on in vitro fibre solubility. IARC Sci Publ 1989;90: 134-9
  5. NIOSH. Asbestos fibers and other elongate mineral particles: state of the science and roadmap for research [revised April 2011, publication number 2011-159, current intelligence bulletin 62]. Washington (DC): Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health.
  6. Osmond-McLeod MJ, Poland CA, Murphy F, Waddington L, Morris H, et al. Durability and inflammogenic impact of carbon nanotubes compared with asbestos fibres. Part Fibre Toxicol 2011;8:15 https://doi.org/10.1186/1743-8977-8-15
  7. Oze C, Solt K. Biodurability of chrysotile and tremolite asbestos in simulated lung and gastric fluids. Am Mineral 2010;95:825-31 https://doi.org/10.2138/am.2010.3265
  8. Seshan K. How are the physical and chemical properties of chrysotile asbestos altered by a 10-year residence in water and up to 5 days in simulated stomach acid? Environ Health Perspect 1983;53:143-8 https://doi.org/10.1289/ehp.8353143
  9. Skinner HCW, Ross M, Frondel C. Asbestos and other fibrous materials - mineralogy, crystal chemistry, and health effects. New York (NY): Oxford University Press, 1988. p 204
  10. Suquet H. Effects of dry grinding and leaching on the crystal structure of chrysotile. Clays Clay Miner 1989;37:439-45 https://doi.org/10.1346/CCMN.1989.0370507
  11. Titulaer MK, van Miltenburg JC, Jansen JBH, Geus JW. Characterization of tubular chrysotile by thermoporometry, nitrogen sorption, drifts, and TEM. Clays Clay Miner 1993;41:496-513 https://doi.org/10.1346/CCMN.1993.0410410
  12. Wagner JC, Sleggs CA, Marchand P. Diffuse pleural mesothelioma and asbestos exposure in North Western Cape Province. Br J Ind Med 1960;17:260
  13. Wypych F, Adad LB, Mattoso N, Marangon AA, Schreiner WH. Synthesis and characterization of disordered layered silica obtained by selective leaching of octahedral sheets from chrysotile. J Colloid Interface Sci 2005;283:107-12 https://doi.org/10.1016/j.jcis.2004.08.139

피인용 문헌

  1. A Study on the Characteristics of Chrysotile and Amosite by Acid and Heat Treatment vol.37, pp.6, 2015, https://doi.org/10.4491/KSEE.2015.37.6.371