92 Organic compounds in soils, sediments & sludges
80
60
40
20
0
80
60
40
20
0
80
60
40
20
0
Artemisinin (% left)
Artemisinin (% left)
Artemisinin (% left)
(a)
(b)
(c)
Time (days)
0
0
0
0
10
20
30
40
50
60
Figure 3.10 Degradation in (a) sandy soil, (b) clayey soil and (c) humic soil at 60% of WHC and 22
◦ C.
Artemisinin in percent left of initial added concentration as a function of time in days,
given as average of four replicates (error bars represents standard deviations). The open
circles represent recovery at time zero. X. Wang et al, International Journal of Environmental
Analytical Chemistry, 2005, 85, 1999, © 2005 Taylor and Francis [269].
persistence time in soil increased the risk of toxic effects on non target organisms in
soil as well as in water.
Dimou et al [273] studied the photodegradation and determination of Trifluralin
in soils using degradation kinetics
The photochemical degradation of the herbicide Trifluralin, a dinitroaniline was
investigated in different types of natural waters (ground, marine, river, lake) and in
distilled water as well as in soils characterised by different textures and compositions.
Degradation kinetics was monitored under natural sunlight while the effect of humic