Zn originating from paint, fuel additives, tyres and particulates
from moving parts. Most researchers [15–17] consider
that the heavy metals caused by combustion, such as copper,
chromium, arsenic, zinc and lead, are always accompanied
by iron oxide, and magnetic particles are strongly adsorbent
and carriers of heavy metals, so the magnetic parameters
may be an effective indicator of the content of certain pollutants.
Environmental magnetism has become one of the main
focuses of current research in pollution history reconstruction,
monitoring the present environmental pollution, and
tracing and separating the sources of pollution. The atmosphere
[18–21], street dustfall [22–25], soil [1–11], sediment
[12–14], leaves [26–29] and tree rings [30] are usually used
as the research targets. Analysis is developed from a single