Distribution and Health Risk Assessment of Some Trace Elements in Runoff from Different Types of Athletic Fields

Table 1

Main characters of the underlying surface of the five athletic fields.

Sampling area	Filling materials	Catchment area (km^2)
Artificial turf	Polyethylene, rubber particles	16.3
Plastic runway	Polyurethane prepolymer; rubber particles	17.2
Basketball court	Rubber	2.90
Badminton court	Acrylic acid	1.45
Tennis court	Siloxane-modified polyurethanes	1.82