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| Guerra,Fernando; Trevizam,Anderson Ricardo; Fior,Rafael Carvalho; Muraoka,Takashi. |
| Large areas of land are nowadays contaminated by heavy metals and, it is therefore, important to monitor their levels in soils. Vegetables act as transfer mechanisms of such contaminants from soils to higher levels in the food chain. In this study, we aimed to evaluate the effectiveness of chemical extractants by the L-value method for Cd phytoavailability using the 109Cd radionuclide. In a greenhouse experiment, rocket plants (Eruca sativa L.) were cultivated in pots with samples from Typic Hapludox and Typic Quartzipsamment soils. Cadmium concentrations ranging from 0 to 16 mg kg-1 were added to a 200 mL solution containing 148 kBq 109Cd. The available Cd in the soil was extracted by DTPA, Mehlich-1, Mehlich-3, and a mixture of organic acids (acetic,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Potentially toxic element; L-value; Radioactive tracer; Weathered tropical soils; Soil contamination. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000500010 |
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| Bailly Du Bois, Pascal; Rozet, M; Thoral, K; Salomon, Jean-claude. |
| New tools are now available to make more accurate deteminations of radio-tracer distribution : - Repositioning of station locations at the same tide reference-time, giving a homogeneous spatial data set, coupled with the possibility of interpolating and quantifying the amounts of dissolved radioactivity flowing through the English Channel. - The first measurements of tritium (3H) in seawater on a large scale in the English Channel demonstrate that this fully conservative radionuclide is a clearly identifiable marker of industrial releases. Recent campaigns carried out during the FluxManche II CCE (1994) programme show the general distribution of dissolved radionuclides 137Cs, 134Cs, 125Sb and 3H in the English Channel and Irish Sea. The re-utilization of... |
| Tipo: Text |
Palavras-chave: English channel; Tritium; Radioactive tracer; Watre mass circulation. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/1997/acte-559.pdf |
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