Fluvial Transports of Mercury Pollution in the III River Basin (Northeastern France)
509
a- High flows of February 1996
114
-~~'
--Tham
~~ :'~'~
-- Oomhcim
1166.4f1&.'-'
b- Low flows of July 1996
6$.4
~:q«=' ~ ~-~ --- 11wm I-~
~
U27
~
u_m' .... '270 I
Enoiohoim
10 - : · · · . 3 8 8 . 1
[
........ _ .... - Obcrhcr&hcim
43.6
·······l..Idhof
'-2'
............... IlhIcuscrn
La,:,~.:.:-7
Obe,hc ~
~
FCC;:;~ 4232 413.2 l..adhof
+....
.~
=
131
Gicuen river
.. IIhacUlelll
+ ....
182.8
"""" . . . . ,.l-_ ............... ochnhcim
Ochnhcim
210.3 PI.I· 1
S9B 1'& .• "'
Fig. 6. Spatial evolution of mercury fluxes (in ~lg.S-I) in particulate (left side) and dissolved (right
side) phases in the upper III river basin during high (a) and low (b) water periods. rda: Residual
drainage area
be observed in the spatial behaviour of total suspended sediment transports
(Messaitfa 1997). On the contrary, during the low flows, the particulate fluxes of
mercury increase in the downstream part, from Oberhergheim to Oehnheim,