• Journal of Yeungnam Medical Science
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• 제40권4호
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• pp.373-380
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• 2023

Background: The association between dental amalgam fillings and urine mercury concentrations was investigated in this study to assess the health risks associated with dental amalgams. Methods: This cross-sectional study included 99 women in their 20s who visited the dental clinic in Daegu, Korea. The 99 participants were composed of 68 subjects who had dental amalgam fillings (exposure group) and 31 subjects who did not have dental amalgam fillings (nonexposure group). Oral examinations were conducted by a single dental hygienist, sociodemographic features were investigated as confounding variables, and urine mercury concentrations were measured using an automatic mercury analyzer. Results: The mean±standard deviation of the urine mercury concentrations of the exposure and nonexposure groups were 1.50±1.78 ㎍/g creatinine and 0.53±0.63 ㎍/g creatinine, respectively. The exposure group showed significantly higher levels than the nonexposure group (p<0.01). The urine mercury concentration significantly increased with an increase in the number of teeth filled with amalgam, cavity surfaces involved, and number of defective amalgam fillings, and according to the latest exposure time (p<0.001). In the multiple regression analysis of amalgam-related factors and urine mercury concentrations after correction for confounding factors, the urine mercury concentration in the group with six or more amalgam-filled teeth, 11 or more cavity surfaces, and two or more defective amalgams was significantly higher than that in the nonexposure group (p<0.001). Conclusion: According to this study, exposure to dental amalgams was confirmed to significantly affect urine mercury concentrations.

• 분석과학
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• 제21권6호
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• pp.480-486
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• 2008

본 연구에서는 시중에 유통중인 광물성 생약에서의 중금속(Pb, Cd, As, Hg)에 대해 모니터링 하였다. Pb, Cd, As의 경우 시료 전처리는 습식분해법으로 하였으며, ICP-MS를 이용하여 검출하였고 Hg의 경우 AMA를 이용하여 모니터링 하였다. 모니터링의 결과 전체 시료(92)의 25.81%(24)가 Pb를 함유하고 있었으며 능자광(85.5 mg/kg), 부석(41.2 mg/kg), 진사(20.4 mg/kg)에서 기준치(0.5 mg/kg) 이상으로 검출되었다. Cd의 경우 전체 시료(92)의 9.68%(17)가 함유되어있었으며, 능자광(345 mg/kg), 부석(0.44 mg/kg), 진사(2.78 mg/kg)에서 기준치(0.3 mg/kg) 이상으로 검출되었고, 전체 시료(92)의 24.73%(23)가 As를 함유하고 있었으며, 능자광(5.72 mg/kg), 조산화납(22.2 mg/kg), 황화제이수은(10.0 mg/kg), 진사(12.5 mg/kg), 흑운모(14.6 mg/kg)에서 기준치(3 mg/kg)이상으로 검출되었다. Hg의 경우는 전체 시료(92)의 76.34%(78)가 함유되어 있었으며, 전체 13 종 광물 중 10종에서 기준치(0.2 mg/kg) 이상으로 검출되었다. 따라서, 국내에 유통되고 있는 광물성 생약재의 품질 평가와 안전관리를 보완하여 광물성 생약에 대한 신뢰성과 안전성을 확보할 필요성이 있는 것으로 판단된다.

• 한국환경농학회지
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• 제34권1호
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• pp.64-68
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• 2015

BACKGROUND: Heavy metals (Al, As, Cd, Cr, Cu, Li, Hg, Ni, Pb, and Zn) were analyzed to elucidate the impact of weir construction on their concentrations in sediments of Geum River, Korea. We also attempted to investigate the source of the heavy metals in sediments. METHODS AND RESULTS: For this study, sediments were collected from May through June in 2012. The concentrations of heavy metals except Hg were determined by inductively coupled plasma mass spectrometer, and Hg was measured by automatic mercury analyzer. More clay were accumulated in the furthest stations in the upstream direction starting from the weirs. Most of the heavy metals showed higher concentrations in the most upstream located station of Geumnam Weir. However, high concentrations were not observed in the most upstream stations of the other weirs. The concentrations of Hg and As were much higher in sediments of Gap Stream. CONCLUSION: Gap Stream may be a potential source for high deposits of As and Hg. Presence of the dams may not play an important role in controlling heavy metal concentrations in sediments. It is necessary to monitor heavy metal concentrations for a longer time period to study the effect of environmental changes on heavy metal distribution in Geum River.

• 분석과학
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• 제22권3호
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• pp.201-209
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• 2009

국내에서 유통 중인 동물성 생약 38개 품목 총 325개 시료를 대상으로 ICP-MS와 수은자동분석기기를 이용하여 납, 카드뮴, 비소, 수은의 오염실태 조사를 수행하였다. 검출된 농도 범위는 납 $0.02{\mu}gkg^{-1}$ $(D.L){\sim}11.29mgkg^{-1}$, 카드뮴 $0.01{\mu}gkg^{-1}$ $(D.L){\sim}2.50 mgkg^{-1}$, 비소 $0.12{\mu}gkg^{-1}$ $(D.L){\sim}5.27mgkg^{-1}$이었으며, 수은의 경우 검출 범위를 초과한 한 개의 시료를 제외하면 $0.01{\sim}77.11mgkg^{-1}$으로 나타났다. 전체 동물성 생약 38품목 중 납, 카드뮴, 비소, 수은 모두가 잔류허용기준치 이하로 검출된 동물성 생약은 별갑과 오배자 2개 품목이었고, 22개 품목에서 납의 오염이 가장 큰 비중을 차지하였다. 수은의 경우 농도 범위가 비교적 넓게 나타난 녹각 등 16개 품목뿐만 아니라 전체 시료의 54.46%가 잔류허용기준치를 초과하였다. 따라서 납과 수은에 대한 지속적인 실태조사를 실시하고 오염원인 추적을 위한 연구가 수행되어야 할 필요가 있는 것으로 나타났다.