Micro-pollutant

Log D_OW at pH 7.0¹

Molecular weight (g/mol)

Benzotriazole

1.33

120

Diclofenac

1.39 to 3.2

298

Guanylurea

−2.08

104

Iopamidol

−2.6

779

Iopromide

−2.3

793

Melamine

−2.2

128

Metformin

−4.2 to −3.4

131