Resin

model

Maternal

model

Structure

Functional

group

Appearance

Exchange capacity/(mmol·g⁻¹)

Particle size range/mm

Reference

001 × 7

styrene

gel

−SO₃H

brown to tan globular granules

≥4.5

0.40 - 0.70

[43] [44]

001 × 2.5

styrene

gel

−SO₃H

brown-yellow globular granules

≥4.30

0.400 - 1.250

[45]

D-151

acrylic acid

macropore

−COOH

milky opaque globular particles

≥9.50

0.315 - 1.25

[46]

D-152

acrylic acid

macropore

−COOH

milky opaque globular particles

≥9.00

0.315 - 1.25

[46] [47]