논문 상세보기
pp.685-690
The pollution characteristics of groundwaters in Taegu City and correlation coefficients(r) between water pollution indicators were investigated for two years from January 1996 to December 1997.
Volatile organic compounds such as TCE(tri-chloroethylene), PCE(tetrachloroethylene), 1,1,1-trichloroethane, THM(trihalo-methane), dichloromethane, pesticides such as diazinon, parathion, malathion, and toxic inoganic matters such as As, Hg, Se, Pb, Cd, Cr6+ , CN were not detected in the groundwaters.
Mean values of groundwater pollution indicators were below drinking-water standards, but hardness, KMnO4-C(potassium permanganate consumption), evaporate residues, SO4-2, Fe, NO3- -N, color and turbidity exceeded a little in some samples. As groundwater became deeper, hardness and evaporate residues remarkably increased, but KMnO4-C, NO3- -N, Cl-, color, turbity and bacteria decreased. KMnO4-C, evaporate residues, Cl- and SO4-2 were very high at industrial and commercial areas, and NO3- -N and NH4+-N were very high at agricultural and forest areas.
It showed high positive significances in the relationships between hardness and each of evaporate residues, SO4-2, Zn and Mn, KMnO4-C and each of color, turbidity and Zn, color and each of turbidity, Cu, Zn and Mn, turbidity and each of Fe, Cu, Zn and Mn, and evaporate residues and each of Cl-, SO4-2 and Zn.
