경산지역 토양 및 수질오염에 관한 연구

Abstract

In order to provide the basic information on the environmental pollution of Kyungsan province, the contents of Pb, Cd, Cr, Cu, Mn and Zn in soil, stream water, aquatic sediment and groundwater were investigated, and also the values of pH, COD, <TEX>$KMnO_4-C$</TEX>,\;NH_3-N,\;NO_2-N,\;NO_3-N$</TEX> and <TEX>$Cl^-$</TEX> of stream water and groundwater were determined. The results were as follows. The values of COD, <TEX>$NH_3-N,\;NO_2-N$</TEX> and <TEX>$NO_3-N$</TEX> of the stream waters were very low. The contents of Pb, Cd, Cr, Cu and Zn in the stream waters were respectively at range of <TEX>$0.014~0.063 mg/{\ell},\;0.004~0.007 mg/{\ell<TEX>$\mid$</TEX>, 0~0.045 mg/{\ell},\;0~0.008 mg/{\ell}$</TEX>\;and\;<TEX>$0.001~0.175 mg/{\ell}$</TEX>, and these values were much lower than those of contaminated stream water in Korea. The contents of Cd, Cr, Cu and Zn in the soils were respectively at range of 0.12~O.71 ppm, 0.88~2.65 ppm, 2.86~22.33 ppm and 3.89~26.39 ppm, and these values were much lower than those of ordinary polluted areas in Korea. The contents of Cd, Cr, Cu, As, Zn and Mn in the aquatic sediments were respectively at range of 3.05~3.81 ppm, 14.6~70.6 ppm, 13.74~61.59 ppm, 76.8~465.5 ppm, 12.56~190.83 ppm and 333.3~l188.3 ppm. The values of pH, <TEX>$KMnO_4-C,\;NH_3-N$</TEX>, and <TEX>$NO_3-N$</TEX> of the groundwaters were respectively at range of 7.6~8.4, <TEX>$0~3.95{\ell}$</TEX>, 0.05~0.15 mg/{\ell}$</TEX> and 0.05~0.42 <TEX>$mg/{\ell}$</TEX>. The contents of Pb, Cd and Cr in the groundwaters were respectively at range of 0.015~0.061 <TEX>$mg/{\ell}$</TEX>, 0.O06~0.009 <TEX>$mg/{\ell}$</TEX> and 0.005~0.045 <TEX>$mg/{\ell}$</TEX>.