Pourbaix Diagram을 통한 수체 내 납 이온에 대한 온도효과 연구

다국어 초록 (Multilingual Abstract)

The variation of the stable region of lead ion in aqueous environment has been studied according to the temperature change based on its stable region at standard state by constructing Pourbaix diagrams at different temperatures. The temperature range considered was between 278 ~ 338 K and the stable region of Pb2+ (aq) was observed to decrease as temperature rises, which was due to the decrease of the stable region of water and the increase of the stable region of solid lead hydroxide. The solid lead compounds considered were PbO(s), Pb3O4(s), and PbO2(s), and the pH at the boundary between the stable regions of PbO(s) and Pb2+ (aq) was observed to be lowered with temperature. For Pb3O4(s) and PbO2(s), their stable regions were estimated to be enlarged as temperature is raised. Considering the change of the stable region of lead ion with temperature, in the application of the precipitating method for the treatment of lead ion in water it was considered to be more desirable to treat lead ion as its hydroxide form rather than its elemental form at higher temperature.

참고문헌 (Reference)

1 Metcalf and Eddy, "폐수처리공학" 동화기술 534-542,

2 Johnson, F. M, "The Genetic Effects of Environmental Lead" 410 : 123-140, 1998

3 Beverskog, B., "Revised Pourbaix Diagram for Iron at 25-300oC" 38 (38): 2121-2135, 1996

4 Muñoz-Portero, M. J., "Pourbaix Diagram for Titanium in Concentrated Aqueous Lithium Bromide Solutions at 25oC" 53 : 1440-1450, 2011

5 Cook, W. G., "Pourbaix Diagram for Chromium, Aluminum and Titanium extended to High-Subcritical and Low-Supercritical Conditions" 58 : 291-298, 2012

6 Atkins, P., "Physical Chemistry" Oxford University Press 2010

7 Dai, X. Q, "Pb2+ Inhibits the Hyperpolarization-Activated Current in Acutely Isolated Dorsal Root Ganglion neurons" 120 : 57-63, 2003

8 Wu, T. N., "Lead Poisoning caused by Contaminated Cordyceps a Chinese Herbal Medicine : Two Case Reports" 182 : 193-195, 1996

9 Donnelley, R. R., "Lange's Handbook of Chemistry" McGraw-Hill 1992

10 García-Lestón, J., "Genotoxic Effect of Lead : An Updated Review" 36 : 623-636, 2010

11 Ahamed, M., "Environmental Lead Toxicity and Nutritional Factors" 26 : 400-408, 2007

12 Tsucekawa, M., "Effect of Water Addition on Centrifugal Treatment to Remove Lead Compounds from Polyvinylchloride in Electric Wires and Cables" 89 : 94-97, 2012

13 Wang, P., "Effect of Pb on the Oxidative Stress and Abtioxidant Responxe in a Pb Bioaccumulator Plant Vallisneria natans" 78 : 28-34, 2012

14 CRC, "CRC handbook of chemistry and physics" CRC press 2008

15 Pourbaix, M, "Atals of Electrochemical Equilibria in Aqueous Solutions" Pergamon Press Ltd 485-492, 1966