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- Author or Editor: I. Barcelo-Quintal x
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Abstract
A study was undertaken to determine experimentally the uptake of pollutants into of the different parts of the water hyacinth (Eichhornia crassipes) found in “José Antonio Alzate” dam in the State of México, México. There is evidence for efficient and significant root accumulation of Ti, Mn, Fe, and Ba; but in the upper parts concentrations was consistently determined by the degree of watering. However, a significant input could by derived from a common generic source, such as the atmospheric deposition. The experimental study would, therefore, indicate that water hyacinth species can be highly effective in providing a control and treatment buffer for toxic discharges to the dam.
Abstract
The S, K, Ca, Ti, V, Cr, Mn, Fe, Cu, Zn and Pb concentration and the elemental composition of particles in suspended matter from principal discharges to Lerma River, have been evaluated. The elemental concentration in suspended matter has been obtained by Energy Dispersive X-Ray Fluorescence Spectrometry. The elemental composition of particles has been obtained by means of Energy Dispersive X-Ray Spectrometry (EDS). The results show that K, Ca, Ti, Mn and Fe are mainly from natural origin in the Upper Course of the Lerma River (UCLR), where the principal contributions probably come from dragging of soils and sediments in the rainy season and Cr, Cu, Zn and Pb are mainly from anthropogenic origin where the principal contributions come from urban and industrial untreated discharge. The application of Energy Dispersive X-Ray Spectrometry plus Scanning Electron Microscopy is useful in the characterization of suspended matter in natural, anthropogenic and mixed water discharges.
Abstract
The metal distribution of Cr, Mn, Fe, Cu, Zn, and Pb, and the elemental composition, morphology and relative abundance of particles have been evaluated in suspended matter of the Upper Course of the Lerma River in Mexico. The metal concentrations in the suspended matter decrease in the sequence: Fe > Mn > Zn > Cu = Cr > Pb. The Fe and Mn concentrations in the suspended matter are produced principally by natural contributions whereas the Cu, Zn, Cr, and Pb concentrations are produced principally by anthropogenic contributions. In general, the particle groups decrease in the following sequence: aluminosilicate > silica > sulphur > metals > calcium > manganese > iron > calcium carbonate.
