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Table 1 Physico-chemical properties of the investigated substances

From: A combined experimental and modeling study to evaluate pH-dependent sorption of polar and non-polar compounds to polyethylene and polystyrene microplastics

Compound

CAS#

Molecular weight (g mol−1)

WSsub (mol L−1)

log KOW

pKa

Acid–base reaction

Atrazine

1912-24-9

215.69

5.43 × 10−3

2.61

1.60

Base

Benzotriazole

95-14-7

119.13

1.05

1.44

8.37

Base

Caffeine

58-08-2

194.19

1.65 × 101

0.07

 

Neutral

Carbamazepine

298-46-4

236.28

3.10 × 10−3

2.45

13.9

Acid

Carbendazim

10605-21-7

191.19

9.27 × 10−2

1.52

4.29

Base

DEET

134-62-3

191.28

Liquid

2.18

 

Neutral

Diazinon

333-41-5

304.35

1.31 × 10−3

3.81

2.60

Base

Diclofenac

15,307-86-5

296.15

1.87 × 10−4

4.51

3.99

Acid

Ibuprofen

15687-27-1

206.29

3.69 × 10−4

3.97

4.45

Acid

MCPA

94-74-6

200.62

3.13 × 10−2

3.25

3.13

Acid

Mecoprop

7085-19-0

214.65

1.62 × 10−2

3.20

3.78

Acid

4-Nonylphenol

104-40-5

220.36

4.78 × 10−5

5.76

10.7

Acid

Phenanthrene

85-01-8

178.24

3.95 × 10−5

4.46

 

Neutral

Propiconazole

60207-90-1

342.22

Liquid

3.72

1.09

Base

Tris(2-chloroisopropyl)-phosphate (TCPP)

13674-84-5

327.57

Liquid

2.59

 

Neutral

Tebuconazole

107534-96-3

307.83

7.78 × 10−4

3.70

1.76

Base

Terbutryn

886-50-0

241.36

7.15 × 10−4

3.74

4.30

Base

Torasemide

56211-40-6

348.42

2.10 × 10−2

3.37

6.68

Acid

Triclosan

3380-34-5

289.55

7.55 × 10−5

4.76

7.90

Acid

  1. Properties are either taken from EPISuite (molecular weight and log KOW of neutral species) or the PubChem database (pKa). Subcooled liquid solubilities (WS) were estimated based on melting points according to Kan and Tomson [18] and Liu et al. [24]