“Contamination Assessment of Abandoned Mines by Integrated Pollution Index in the Han River Watershed”

摘要

categorize the most polluted mine areas among 44 mine sites at the four cities of Chungcheongbuk-do provincein South Korea. Both water and soil samples were collected from the mine area. The pH of the water and soil ranged from3.6 to 8.5 and from 4.1 to 9.1 respectively. A significant amount of arsenic (As), cadmium (Cd), copper (Cu), nickel (Ni),lead (Pb), zinc (Zn) and mercury (Hg) occurred in soil samples collected from the mine areas (0.2 to 42.4, 0.7 to 8.6, 10.7to 430.2, 5.8 to 49.8, 2.1 to 122.8, 37.4 to 359.4 and 0.2 to 11.4 mg kg-1 respectively). The surrounding available watersalso carried high contents of Cd, Cu, Pb and Zn, generally exceeding the fresh water acute and chronic criteria. Each minesite was ranked according to the Integrated Pollution Index (IPI). The normalized pollution index (PIn) for water and soil, and the Survey Index (SI) were used to determine IPI. The highest polluted mine site exhibited an IPI value of 0.6394. IPI was introduced to prioritize the research sites for further precise investigation.