국내 일부 소각장 근로자와 주변지역주민들의 PCDDs/Fs 노출과 건강 영향 평가

Exposure Assessment of PCDD/Fs and Monitoring of Health Effects on Workers and Resident near the Waste Incinerators in Korea

  • 홍윤철 (인하대학교 의과대학 산업의학과) ;
  • 이관희 (인하대학교 의과대학 산업의학과) ;
  • 권호장 (단국대학교 의과대학 예방의학교실) ;
  • 장재연 (아주대학교 의과대학 예방의학교실) ;
  • 임종한 (인하대학교 의과대학 산업의학과)
  • Hong, Yun-Chul (Department of Occupational Medicine, Inha University College of Medicine) ;
  • Lee, Kwan-Hee (Department of Occupational Medicine, Inha University College of Medicine) ;
  • Kwon, Ho-Jang (Department of Preventive Medicine, Dankook University College of Medicine) ;
  • Jang, Jae-Yeon (Department of Preventive Medicine, Ajou University College of Medicine) ;
  • Leem, Jong-Han (Department of Occupational Medicine, Inha University College of Medicine)
  • 발행 : 2003.12.01

초록

Objectives : In this study, the exposure status of the hazardous substances from incinerators, such as polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs), were studied , and the relationship between the exposure of these hazardous substances and their heath effects on the workers and residents near municipal solid waste (MSW) incinerators and an industrial incinerator investigated. Methods : Between July 2001 and Jure 2002, 13 workers at two MSW incinerators, 16 residents from the area around the two MSW incinerators, 6 residents from the control area, and further 10 residents near an industrial incinerator, estimated to emit higher levels of hazardous substances, were interviewed. Information, including sociodemographic information, personal habits, and work history, detailed gynecologic and other medical history were collected through interviews. Blood samples were also collected from 45 subjects, and analyzed for PCDD/DFs, by high resolution gas chromatography -high resolution mass spectrometry, using the US EPA 1613 method. In addition to the questionnaire survey, urinary concentrations of 8-hydroxydeoxyguanosine (8-OH-dG) and malondialdehyde (MDA) were measured as oxidative injury biomarkers. The urinary concentrations of 8-OH-dG were determined by in vitro ELISA, and the MDA by HPLC, using u adduct with thiobarbituric acid. Results : The PCDD/DFs concentrations in the residents near the industrial incinerator were higher than those in the controls, workers and residents near the MSW incinerators. The average TEQ (Toxic Equivalencies) concentrations of the PCDD/DFs in residents near the industrial incinerator were 53.4pg I-TEQs/g lipid. The estimated daily intakes were within the tolerable daily intake range (1-4 pg I-TEQ/Kg bw/day) suggested by WHO (1997) in only 30% to the people near the industrial incinerator. Animal studies have already shown that even a low body border of PCDD/DFs, such as 10 ng TEQ/kg bw, can cause oxidative damage in laboratory animals. Our study also showed that the same body burden of PCDD/DFs can cause oxidative damage to humans. Conclusions : The exposures to PCDD/DFs and the oxidative stress of residents near the industrial incinerator, were higher than those in the controls, workers and residents near the MSW incinerators. Proper protection strategies against these hazardous chemicals are needed. Because a lower body burden of PCDD/Fs, such as 10ng TEQ/kg bw, can cause oxidative damage, the tolerable daily intake range should be restrictedly limited to 1pg I-TEQ/kg bw/day.

키워드

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