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Depositional history of polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs) and polycyclic aromatic hydrocarbons (PAHs) in an Amazon estuary during the last century
- Source :
- Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual), Universidade de São Paulo (USP), instacron:USP
- Publication Year :
- 2018
-
Abstract
- The sources and depositional history of OCPs (organochlorine pesticides), PCBs (polychlorinated biphenyls) and PAHs (polycyclic aromatic hydrocarbons) over the last 100years were determined in two sediment cores collected in the Amazon region. It was possible to distinguish two depositional periods along the cores. The first period occurred before extensive anthropogenic effects were registered in the sediments. During this time interval, the concentrations of all OCPs and PCBs were below the detection limits (DL), and the PAH concentrations were low and essentially constant (58.19-124.28ngg-1). The second period starts in the mid-1960s and reflects the increased human influence in the area. The concentrations of OCPs, PCBs, and PAHs increased towards the top of the cores, varying between
- Subjects :
- Environmental Engineering
010504 meteorology & atmospheric sciences
ECOSSISTEMAS ESTUARINOS
010501 environmental sciences
01 natural sciences
Sedimentary depositional environment
Hydrocarbons, Chlorinated
Environmental Chemistry
Pesticides
Polycyclic Aromatic Hydrocarbons
Waste Management and Disposal
0105 earth and related environmental sciences
geography
geography.geographical_feature_category
Amazon rainforest
Organochlorine pesticide
Sediment
Estuary
Pollution
Polychlorinated Biphenyls
Diagenesis
Environmental chemistry
Environmental science
Estuaries
Brazil
Water Pollutants, Chemical
Environmental Monitoring
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual), Universidade de São Paulo (USP), instacron:USP
- Accession number :
- edsair.doi.dedup.....f622e8d3b978d191fe58b4645e0b0691