Table 1.

Specifications of the six macroporous resins.

Macroporous Resin	Polarity	Material	Particle Size (mm)	Surface Area (m2/g)	Average Pore Diameter (Å)
HPD-100	Non-polar	Polystyrene	0.3~1.2	650~700	85~90
D4020	Non-polar	Polystyrene	0.30~1.25	540~580	100~105
ADS-8	Non-polar	Polystyrene	0.30~1.25	450~500	120~160
AB-8	Weak-polar	Polystyrene	0.30~1.25	480~520	130~140
ADS-17	Moderately-polar	Polystyrene	0.30~1.25	90~150	250~300
NKA-II	Polar	Polystyrene	0.30~1.25	160~200	145~155