Heavy Metal Contents and Magnetic Properties of Playground Dust in Hong Kong

@article{Ng2003HeavyMC,
  title={Heavy Metal Contents and Magnetic Properties of Playground Dust in Hong Kong},
  author={Sai Leung Ng and Lung Sang Chan and Kin Che Lam and Wing Kan Chan},
  journal={Environmental Monitoring and Assessment},
  year={2003},
  volume={89},
  pages={221-232}
}
This study examined the levels of seven heavy metals (namelyzinc, copper, cadmium, chromium, lead, manganese and iron) andtheir associations with magnetic properties in playground dustof Hong Kong. Results showed that the playground dust containedhigh concentrations of Zn (mean = 1883 μg g-1), Cu(mean = 143 μg g-1) and Cr (mean = 263 μg g-1).Qualitative examination of dust samples under microscope indicated local traffic as one of the important pollutant sources. Magnetic measurements indicated… CONTINUE READING
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