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Accumulation of chromium in root tissues of Eichhornia crassipes (Mart.) Solms. in Cachoeira river—Brazil

2004; Elsevier BV; Volume: 231-232; Linguagem: Inglês

10.1016/j.apsusc.2004.03.195

1873-5584

Pedro Antônio Oliveira Mangabeira, L. Labéjof, Alessio Lamperti, A-A.F. de Almeida, Arno Heeren de Oliveira, F. Escaig, M. I. Severo, D.da C. Silva, Matheus Saloes, Marcelo Schramm Mielke, Emerson R Lucena, Maria C. Martins, Kaline Benevides Santana, Konstantin L. Gavrilov, Peter R. Galle, R. Levi‐Setti,

Heavy metals in environment

Heavy metals are not biodegradable and enter the food chain through a number of pathways causing progressive toxic actions due to the accumulation in different organs during a life span and long-term exposure to contaminated environments. Secondary ion mass spectrometry (SIMS) and inductively coupled plasma mass spectrometry (ICP-MS) were used to localize chromium in Eichhornia crassipes (Mart.) Solms. ICP-MS was used for the determination of Cr concentrations in water, sediments and plant samples in the Cachoeira basin, Bahia, Brazil. The results obtained by ICP-MS shows abnormally high values of Cr concentrations in water samples (0.38 μg/l), in soil samples (63 μg/g) and 70 μg/g in plant tissue. SIMS results show increased levels of Cr in the root cell wall and xylem vessel, these sites show high Cr accumulation. The ICP-MS data confirm E. crassipes like bioindicator plant. Chemical analysis using ICP-MS, confirms SIMS analysis on the presence of Cr in roots xylem cell walls. The use of ICP-MS, to investigate the same organs as the ones investigated by SIMS, provided complementary results on chromium study.