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Table 3 Bio-concentration factor of BTEX in water-fish (Synodontis clarias)-parasite (Procamallanus laevionchus) transit

From: Comparative partition coefficients of BTEX and OCPs between host Synodontis clarias and parasite Wenyonia acuminata

Components (ppm) Water (ppm)
Mean ± SD
Intestine (ppm)
Mean ± SD
Parasite (ppm)
Mean ± SD
BAFI/W BAFP/I
Benzene 2.765 ± 0.60 18.3* ± 2.7 0.000 ± 0.00 6.000 0.000
Toluene 2.690* ± 0.61 3.369* ± 0.68 0.000 ± 0.00 1.000 0.000
Chlorobenzene 1.900 ± 0.64 4.231* ± 0.67 0.000 ± 0.00 2.000 0.000
Ethylbenzene 3.890 ± 0.73 6.342* ± 0.12 7.460* ± 0.38 2.000 1.000
m + p-Xylene 0.980 ± 0.33 7.409* ± 1.23 6.861* ± 0.23 7.000 1.000
O-xylene 1.890 ± 0.21 5.281* ± 1.09 5.824* ± 0.41 3.000 1.000
1,3-Dichlorobenzene 0.030* ± 0.52 0.000 ± 0.00 0.000 ± 0.00 0.000 0.000
1,4-Dichlorobenzene 0.290* ± 0.38 0.463* ± 0.11 0.000 ± 0.00 2.000 0.000
1,2-Dichlorobenzene 0.000 ± 0.29 0.000 ± 0.00 0.000 ± 0.00 0.000 0.000
Total BTEX 14.270 ± 0.12 45.429* ± 0.38 20.146 ± 0.68
  1. Asterisked (*) numbers imply significantly higher (p < 0.05). Numbers with same superscripts are no significantly different (p > 0.05). Italicized bioaccumulation factors imply significant figures (= or > 1). BAF I/W bioaccumulation factor of intestine relative to water, BAF P/I bioaccumulation factor of parasite relative to intestine