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Table 3 KPS,n and KPS,i values derived from the model fit (Eq. 2) to measured DP values and compared to the log KOW

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

Compound

log KOW

KPS,n (L kg−1)

KPS,i (L kg−1)

% variation coefficients of DP

pH 4

pH 7

pH 10

Atrazine

2.61

< 5 × 101

< 5 × 101

244.2

335.9

257.3

Benzotriazole

1.44

< 5 × 101

< 5 × 101

444.7

88.4

213.7

Caffeine

0.07

< 5 × 101

n.a. (no ionic species)

1785.7

428.3

1199.7

Carbamazepine

2.45

< 5 × 101

< 5 × 101

172.2

175.6

283.2

Carbendazim

1.52

< 5 × 101

< 5 × 101

471.1

598.5

117.5

DEET

2.18

< 5 × 101

n.a.

177.1

240.7

500.2

Diazinon

3.81

2.15 × 103

2.09 × 103

93.6

82.5

53.5

Diclofenac

4.51

2.70 × 102

< 5 × 101

93.0

214.2

6101.7

Ibuprofen

3.97

2.05 × 102

< 5 × 101

45.9

184.0

161.0

MCPA

3.25

< 5 × 101

< 5 × 101

699.7

1564.9

196.7

Mecoprop

3.20

< 5 × 101

< 5 × 101

138.6

609.1

2206.8

4-Nonylphenol

5.76

9.18 × 103

3.74 × 103

18.7

49.8

31.2

Phenanthrene

4.46

7.21 × 103

n.a.

29.8

21.5

40.4

Propiconazole

3.72

1.17 × 102

< 5 × 101

44.5

169.0

48.9

TCPP

2.59

1.06 × 102

n.a.

42.5

61.5

30.6

Tebuconazole

3.70

9.89 × 101

< 5 × 101

57.3

97.0

85.7

Terbutryn

3.74

< 5 × 101

< 5 × 101

158.7

166.8

90.2

Torasemide

3.37

< 5 × 101

< 5 × 101

2502.6

95.4

70.5

Triclosan

4.76

5.12 × 103

< 5 × 101

95.6

123.4

241.9

  1. K values below 50 L kg−1 are not reported due to too large uncertainties