2 documents found, page 1 of 1
The impact of urbanization on tropical mangroves (Fortaleza, Brazil): Evidence ...
Cavalcante, Rivelino M.; Sousa, Francisco W.; Nascimento, Ronaldo F.; Silveira, Edilberto R.; Freire, George S. S.This investigation represents the first environmental diagnosis of the distribution and sources of polycyclic aromatic hydrocarbons (PAHs) in sediments from a tropical mangrove in Fortaleza, northeastern Brazil. Sediment cores from six sampling stations in the Coco´ and Ceara´ Rivers were retrieved in JuneJuly 2006 to determine 17 priority PAHs. The total PAH concentrations (SPAHs) ranged from 3.04 to 2234.76 m...
Utilização da extração em fase sólida (SPE) na determinação de hidrocarbonetos ...
Cavalcante, Rivelino M.; M. Filho, Nilton S.; Viana, Rommel B.; Oliveira, Isadora R. N.; Nascimento, Ronaldo F.; Silveira, Edilberto R.Polycyclic aromatic hydrocarbons (PAHs) are a great environmental concern mainly because of their toxic, mutagenic and carcinogenic potential. This paper reports utilization of the solid-phase extraction (SPE) technique to determine PAHs in environmental aqueous matrices. The recovery from environmental aqueous matrices fortified with PAHs varied from 63.7 to 93.1% for atmospheric liquid precipitation, from 38....