지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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This study was performed to find the problems according to interference factors (organic matter, pH, Cr, Mn, Fe, clay, and etc.) when we analyzed the hexavalent chromium [Cr(VI)] in soils using UV/VIS spectrometer (US EPA 7196A), attempted to evaluate the domestic applicability of analytical method (US EPA 7199) using IC-UV/VIS spectrometer as alternative method. The recovery rate of certified reference materials was 75.0% (US EPA 7196A) and 101.4% (US EPA 7199) by the analytical methods. As the results of performing QA/QC about US EPA 7199, method detection limit (MDL) and limit of quantification (LOQ) were 0.062 mg/kg, 0.196 mg/kg, respectively. The LOQ of US EPA 7199 was lower than that of the current soil official testing method in Korea (0.5 mg/kg). Cr(VI) contents in 23 soil samples were compared by the analytical methods of EPA 7196A and 7199. Cr(VI) was detected in 13 of 23 soil samples by EPA 7196A, while EPA 7199 was not detected in any soil samples. The Cr(VI) content in 23 soil samples by EPA 7196A was not clearly correlated with Cr, Fe, Mn and clay content in the soil samples. However, the contents of Cr(VI) and organic matter of the soil samples had the highest coefficient of determination ($R^2$) of 0.80. In order to evaluate the correlation between the recovery rates of Cr(VI) and organic matter contents in the soil samples, the recovery rates of 5 soil samples added Cr(VI) standard solution were analyzed by the analytical methods. According to the results, the higher the organic matter contents in soil samples, the lower the recovery rates of Cr(VI) by US EPA 7196, while in case of US EPA 7199, the recovery rates were stable regardless of the organic matter contents.
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참고문헌 (29)
참고문헌 신청
ACGIH (American Conference of Governmental Industrial Hygienists)
ASI / 1985 / Soils of korea and their Improvement :71
Bowen, H.J.M. / 1979 / Environmental chemistry of the elements / Academic press :60~61
Chen, J. / 1994 / Use of denaturing - gradient gel electrophoresis to study chromium - include point mutations in human cells / Environ Health Perspect 102:227~229
Daugherty, M.L. / 1992 / Toxicity summery for chromium / Oak Ridge National Laboratory, U.S. Department of Energy
ASI / 1985 / Soils of korea and their Improvement :71
Bowen, H.J.M. / 1979 / Environmental chemistry of the elements / Academic press :60~61
Chen, J. / 1994 / Use of denaturing - gradient gel electrophoresis to study chromium - include point mutations in human cells / Environ Health Perspect 102:227~229
Daugherty, M.L. / 1992 / Toxicity summery for chromium / Oak Ridge National Laboratory, U.S. Department of Energy
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