Surfactant Effects on Environmental Behavior of Pesticides - Reviews of Environmental Contamination and Toxicology - page 101

Table 5 Hydrolysis of functional moieties of organic chemicals in micelles
Functional moiety/structure Surfactant/medium T (°C)

K s a

k 2w b k 2m c Reference

Carboxylic ester
R 2

OC R 1

O

R 1 =CH 3 , R 2 =H HDTMA Br ( 30 mM)

+ 4.7 mM OH −

≤ 30 85 3.2 0.235 Broxton et al. (1988)

HDTMA SO 4 (<16 mM) 55 3.2 0.182

R 1 =C 11 H 23 , R 2 =H HDTMA Br (0.1-20 mM)

at pH 11.66

25 2.5 × 10 3

* 1.8 × 10 −6 * 4.6 × 10 −4

Al-Awadi and Williams (1990)

R 1 =C 11 H 23 , R 2 =4-Me (1-30 mM) 2.4 × 10 3

* 1.0 × 10 −6 * 4.0 × 10 −4

R 1 =C 11 H 23 , R 2 =4-Cl (1-20 mM) 2.6 × 10 3

* 4.6 × 10 −6 * 1.3 × 10 −3

R 1 =C 11 H 23 , R 2 =4-NO 2 (1-45 mM) 2.4 × 10 3

* 8.2 × 10 −5 * 2.2 × 10 −2

Amide and anilides

CH 3

N Ar

C
O

R

R=2-NO 2 , Ar=Ph HDTMA Br (<20 mM)

+ 4.7 mM OH −

70 200 1.69 × 10 −3 1.4 × 10 −3 Broxton et al. (1988)

HDTMA SO 4 (<30 mM) 90 1.69 × 10 −3 8.4 × 10 −4

R= H, Ar=Ph HDTMA Br (<10 mM)

+ 5.8 mM OH −

65.5 172 1.1 × 10 −4 1.3 × 10 −5 Broxton and Duddy (1979)