193
Isotopic, elemental and molecular composition of Lago Coari, AM, Brazil
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of the possible impacts from Coari City and its anthropogenic activities pushed by exponential population
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the inlet and inside the lake. This approach intends
to understand the spatial and seasonal distribution
of organic matter from natural and anthropogenic
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ZHUHIRXQGZLWKLQWKHODNHVXJJHVWLQJDSUHGRPLnance of autochthonous organic matter. Higher lignin
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vascular plants material input during intense rainfalls.
This could also be related to increased soil erosion
from exposed areas due to land cover changes. AnRWKHU HYHQW FKDUDFWHUL]HG E\ D VWHURO FRQFHQWUDWLRQ
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predominance of n-alkanes C29 and C31, typical of
vascular plants. The mean carbon preference index
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The absence of unresolved complex mixture and the
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contamination. The organic compounds distribution
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neighbor activities the possible impacts measured by
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a
Instituto de Engenharia Nuclear (IEN), Laboratório de Impactos Ambientais (LIMA), Ilha do Fundão, Rio de Janeiro, RJ, CEP:21941-972
([email protected])
b Instituto Federal de Ciência e Tecnologia do Rio Grande do Sul (IFRS), Campus Feliz, RS, Brasil, CEP:95770-000
c Universidade Federal do Rio de Janeiro, Programa de Engenharia Civil (UFRJ-PEC-COPPE), Ilha do Fundão, Rio de Janeiro, RJ, Brasil, CEP:24941-909
d
Universidade Federal Fluminense, Departamento de Geoquímica, Instituto de Química 5 andar, Campus Valonguinho, Niterói, RJ, Brasil,
CEP:24020-141
9th International Symposium on Environmental Geochemistry