GEO Brasil - UNEP

o estado dos recursos hídricos
drained hydro carbonate leak from
service positions mainly, among
the state of the environmet in Brazil
Figure 3 - H ydrogeologic P rovinces in B razil
1
10
others The fundamental physical
difference of pollutant density
has great implication on costs
and methods of sample
collection and on the monitoring
of underground water quality
On the other hand, these
compounds usually have
different anthropic origins and
affect public health in the ppb
order content-parts for every
billion and even of ppt-parts for
every trillion, with mutating or
carcinogenic effects (Rebouças,
2
3
4
1999)
However, the most preoccupying issue
is that there are few laboratories in
Brazil with phycal resources and,
above all, human resources to
1
Northern
Shield
2 Amazonas
3 Central Shield
9
5
6
determine these micro pollutants in
lower patterns of water purity required
for drinking water
4 Parnaíba
5 São Francisco
7
25
Hydro-Geological
Provinces in Brazil
6 East Shield
7 Paraná
8 South Shield
9 Midwest
8
10 Coastal
Source: Hydrogeological Map of Brazil - 1:5,000,000 - DNPM/CPRM - 1983
Nowadays, in the lit logic, tectonic
and structural, geological complex
Brazilian scenery, one may identify 10
domains where stockpiling conditions
(porosity), flow (permeability) and
natural recharge (infiltration of rains)
are relatively similar Such domains
constitute the 10 hydro-geological
provinces of Brazil (Figure 3)
c) synthetic organic compounds from the BTEX group -benzene, toluene,
ethylbenzene and xylene, aromatic compounds, phenols, several volatile organic
chlorides, denser than water compounds -DNAPL’s-Dense Non Aqueous Phase
Liquids, or less dense than water-LNAPL’s-Light Non Aqueous Phase Liquids,
In the case of water ground domains
of primary interstitial porosities /
permeability, there are two main types:
alluvial sediments and dunes and
sedimentary rocks
In sedimentary basins, the deposits
constitute layers or rocky bodies,
relatively extensive and quite
92