Publications by authors named "Ligia D Araujo"
Article Synopsis
- - This study analyzes polycyclic aromatic hydrocarbons (PAHs) in the Santos Basin, Brazil, focusing on data gathered from research conducted since 2000, primarily in the sediment, which accumulates organic matter and PAHs.
- - The research utilizes a comprehensive review of existing literature from major scientific journals, highlighting a gap in studies concerning PAH bioavailability in water compared to sediment, as well as fewer investigations in regions like Santa Catarina.
- - Most studies are concentrated in southeastern Brazil, particularly São Paulo and Rio de Janeiro, indicating that areas near public university research centers are prioritized, leaving remote areas under-researched regarding PAH contamination.
Polycyclic aromatic hydrocarbons (PAHs) most likely derived from natural sources were observed in two sediment cores covering the last 100 years in an Amazon estuarine region. A considerable change in the PAHs main source was observed in the 1960s. Before the 1960s, the sources of PAHs seem to be related to biogenic and/or early-diagenetic processes.
View Article and Find Full Text PDFHistorical deposition of PAHs in mud depocenters from the Southwestern Atlantic continental shelf: The influence of socio-economic development and coal consumption in the last century.
Cristian Taboada Timoszczuk Felipe Rodrigues Dos Santos Lígia Dias Araújo Satie Taniguchi Rafael André Lourenço
Environ Pollut
September 2021
Article Synopsis
- Researchers analyzed polycyclic aromatic hydrocarbon (PAH) concentrations across four sediment cores from the southern Brazilian continental shelf, covering the years 1925 to 2017.
- Total PAH concentrations varied between 44.69 ng/g and 305.43 ng/g, with sources traced back to both natural (like perylene) and anthropogenic processes, including coal and fuel combustion.
- The historical trends in PAH levels linked closely to industrial development periods, indicating low levels before 1945 due to minimal industrialization, rising levels during the post-war industrial boom, and a decrease post-1990 linked to environmental regulations and shifts in coal usage.