어린이놀이터 바닥재 오염도 평가 연구

A study on the Evaluation of the Pollution Level on Flooring Materials of Children’s Playgrounds

This study was performed to measure pH, heavy metals, volatile organic compounds(VOCs) and parasites and to evaluate the pollution level in sands and rubber flooring materials of children’s playgrounds. The samples of sands and rubber flooring materials were collected from 45 and 15 different sampling sites in Gyeonggi-do respectively. pH in sands ranged from 6.4 to 7.4. Average concentrations of heavy metals in sands were Cd 0.705 mg/kg, Hg 0.011 mg/kg, As 2.467 mg/kg, Pb 9.814 mg/kg, Cu 3.633 mg/kg, Ni 9.601 mg/kg and Zn 23.445 mg/kg. Cr6+ and parasites in sands were not detected. All the average concentrations were found to be lower than the standard of soil pollution. VOCs in sands and rubber flooring materials were not detected. Average concentrations of heavy metals in rubber flooring materials were Zn 16,978.13 mg/kg, Cu 159.90 mg/kg, Pb 90.51 mg/kg, Ni 6.47 mg/kg, As 4.50 mg/kg, Cd 1.91 mg/kg, Cr6+ 0.57 mg/kg, Hg 0.44 mg/kg. The average SPS(soil pollution score) was 42.9 and the SPC(Soil Pollution Class) was 1st grade. Therefore soil quality of most of children’s playgrounds investigated indicated healthy state.