3 documents found, page 1 of 1
A Single Digestion Procedure for Determination of Major, Trace, and Rare Earth ...
Carvalho, L; Reis, AT; Soares, E; Tavares, C; Monteiro, RJR; Figueira, P; Henriques, B; Vale, C; Pereira, EThe simultaneous determination of major, trace, and rare earth elements in sediments requires the development of specific procedures to prevent interferences. A single digestion method adapted from the EPA method 3051A is proposed for the quantification of 42 elements in sediments by inductively coupled plasma techniques associated with optical emission spectroscopy (ICP-OES) and mass spectrometry (ICP-MS). A c...
Simultaneous removal of trace elements from contaminated waters by living Ulva ...
Henriques, B; Teixeira, A; Figueira, P; Reis, AT; Almeida, J; Vale, C; Pereira, EThis work shows the capabilities of living seaweed, Ulva lactuca, to remove As, Cd, Pb, Cu, Cr, Hg, Mn and Ni from contaminated waters. Experiments were performed with three algal doses (1.5, 3.0 and 6.0 g L−1, FW), two ionic strengths (salinity 15 and 35), and trace element concentrations corresponding to the maximum allowed values in wastewaters. The highest removals were obtained with the algal dose of 6 g L...
Impact of mercury contamination on the population dynamics of Peringia ulvae (G...
Cardoso, P G; Sousa, E; Matos, P; Henriques, B; Pereira, E; Duarte, A C; Pardal, M AThe effects of mercury contamination on the population structure and dynamics of the gastropod Peringia ulvae (also known as Hydrobia ulvae) and its impact on the trophic web were assessed along a mercury gradient in Ria de Aveiro (Portugal). The gastropod was revealed to be a tolerant species to the contaminant, since the highest densities, biomasses and growth productivity values were recorded at the intermed...