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Table 2 Mean sorption coefficients of phytotoxins to the clay minerals kaolinite and montmorillonite

From: Phytotoxin sorption to clay minerals

ID log Dkao [L kg−1] log Dkao,CEC [L mol−1] log Dmont [L kg−1] log Dmont,CEC [L mol−1]
AIL  < 0.1    < 0.5  
ANI  < 0.1    < 0.5  
BAC  < 0.1    < 0.5  
BIC 0.89 ± 0.02 (8) 2.59 ± 0.02 2.82 ± 0.19 (4) 2.90 ± 0.19
BRU 1.09 ± 0.11 (8) 2.79 ± 0.11 3.05 ± 0.03 (6) 3.12 ± 0.03
CAF  < 0.1   2.08 ± 0.01 (4) 2.15 ± 0.01
CEV 0.94 ± 0.07 (4) 2.64 ± 0.07 2.01 ± 0.02 (4) 2.08 ± 0.02
CIN 0.23 ± 0.15 (4) 1.93 ± 0.15  < 0.5  
COL  < 0.1   2.07 ± 0.02 (4) 2.14 ± 0.02
CON  < 0.1    < 0.5  
COS  < 0.1    < 0.5  
CUE  < 0.1    < 0.5  
CYT 0.25 ± 0.01 (8) 1.95 ± 0.01 2.13 ± 0.01 (4) 2.21 ± 0.01
DAB  < 0.1    < 0.5  
DIG  < 0.1    < 0.5  
ECH 0.16 ± 0.01 (8) 1.86 ± 0.01 2.20 ± 0.18 (5) 2.27 ± 0.18
ERU 0.57 ± 0.10 (8) 2.27 ± 0.10 2.70 ± 0.06 (10) 2.77 ± 0.06
ERUNO  < 0.1    < 0.5  
GAL 0.38 ± 0.02 (8) 2.08 ± 0.02 2.98 ± 0.01 (4) 3.05 ± 0.01
GEL  < 0.1   2.39 ± 0.01 (4) 2.47 ± 0.01
GRA 0.21 ± 0.11 (4) 1.91 ± 0.11 2.01 ± 0.08 (4) 2.08 ± 0.08
HEL  < 0.1   2.17 ± 0.01 (2) 2.24 ± 0.01
HOR 0.54 ± 0.05 (4) 2.24 ± 0.05 2.10 ± 0.08 (4) 2.17 ± 0.08
ISC 0.89 ± 0.05 (8) 2.59 ± 0.05 3.00 ± 0.04 (4) 3.07 ± 0.04
JAC 0.97 ± 0.07 (8) 2.67 ± 0.07  < 0.5  
LAS 0.37 ± 0.03 (8) 2.07 ± 0.03 2.44 ± 0.19 (8) 2.51 ± 0.19
LASNO  < 0.1   1.19 ± 0.01 (2) 1.26 ± 0.01
LAT  < 0.1    < 0.5  
LYC  < 0.1   1.77 ± 0.01 (2) 1.84 ± 0.01
LYO  < 0.1   1.58 ± 0.01 (4) 1.65 ± 0.01
MAT 0.75 ± 0.12 (8) 2.45 ± 0.12 2.61 ± 0.01 (3) 2.68 ± 0.01
MON 0.26 ± 0.16 (4) 1.96 ± 0.16 2.15 ± 0.23 (5) 2.22 ± 0.23
NIC 0.60 ± 0.14 (4) 2.30 ± 0.14 2.38 ± 0.03 (4) 2.45 ± 0.03
NUC 1.13 ± 0.01 (8) 2.83 ± 0.01 2.91 ± 0.09 (8) 2.98 ± 0.09
OLE  < 0.1   1.37 ± 0.06 (8) 1.45 ± 0.06
PAR  < 0.1    < 0.5  
PIC  < 0.1    < 0.5  
PIL 0.74 ± 0.09 (4) 2.43 ± 0.09 2.67 ± 0.03 (3) 2.75 ± 0.03
PRO 1.17 ± 0.01 (8) 2.86 ± 0.01 2.96 ± 0.14 (8) 3.04 ± 0.14
PTB  < 0.1    < 0.5  
QUI 0.61 ± 0.11 (8) 2.31 ± 0.11 2.33 ± 0.05 (8) 2.40 ± 0.05
REC  < 0.1   1.63 ± 0.01 (2) 1.71 ± 0.01
RET 1.02 ± 0.09 (4) 2.72 ± 0.09 2.40 ± 0.02 (3) 2.48 ± 0.02
SAT  < 0.1    < 0.5  
SEK 0.14 ± 0.09 (4) 1.84 ± 0.09 2.41 ± 0.21 (6) 2.49 ± 0.21
SEN 0.89 ± 0.10 (8) 2.59 ± 0.10 2.81 ± 0.01 (4) 2.88 ± 0.01
SENNO  < 0.1    < 0.5  
SOP 0.45 ± 0.07 (4) 2.15 ± 0.07 2.53 ± 0.01 (4) 2.60 ± 0.01
STR  < 0.1    < 0.5  
STY 1.11 ± 0.08 (4) 2.81 ± 0.08 2.96 ± 0.03 (4) 3.04 ± 0.03
VIN  < 0.1   2.09 ± 0.05 (4) 2.16 ± 0.05
YOH 0.82 ± 0.02 (4) 2.52 ± 0.02 NA  
  1. log Dkao = sorption coefficient to kaolinite; log Dmont = sorption coefficient to montmorillonite; subscript CEC depicts the sorption coefficients normalized to the cation exchange capacity of the different clay minerals; values < 0.1 or < 0.5 are below the operational range of the method; errors are expressed by the standard deviation of experiments; numbers in parentheses = the number of individual retention measurements with quantifiable sorption coefficient for each phytotoxin; for explanation of abbreviations in column “ID” see Table 1; NA = not analyzed