Environmental Engineering Reference
In-Depth Information
FISH
160 000
140 000
120 000
100 000
80 000
60 000
40 000
20 000
0
EPTC
2,4-D
Diuron
Diazinon
Malathion
Chlorpyrifos
atrazine
alachlor
DAPHNIDS
400 000
350 000
300 000
250 000
200 000
150 000
100 000
50 000
0
EPTC
2,4-D
diruon
diazinon
malathion
chlorpyrifos
atrazine
alachlor
Figure 5.1.
Comparison of available ecotoxicity data for some commonly monitored
parent pesticides and their transformation products.
The available data demonstrate that, in most cases, degradates have
similar toxicity to, or are less toxic than, their parents (Grasso et al.
2002
;
degradates can be more toxic (Sinclair & Boxall
2003
). For example, of the
degradates investigated by Sinclair and Boxall (
2003
), 41% were less toxic than
their parent, 39% had a similar toxicity to their parent (to account for inter-
laboratory differences it was assumed that EC50 values within a factor of
