Accumulation and Distribution of Heavy Metals in

Authors: Candy CarranzaÁlvarez Angel Josabad AlonsoCastro María Catalina AlfaroDe La Torre Ramón Fernando GarcíaDe La Cruz

Publish Date: 2007/11/20

Volume: 188, Issue: 1-4, Pages: 297-309

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Abstract

The concentrations of Pb Cd Cr Mn and Fe were evaluated in leaves stem and root of the Scirpus americanus and Typha latifolia aquatic macrophytes which were collected from Tanque Tenorio an artificial lagoon highly polluted by municipal and industrial wastewater Some S americanus and T latifolia plants were collected from four different sites within Tanque Tenorio The sites were chosen regarding their proximity with the main channel discharging wastewater into the lagoon The results showed that S americanus and T latifolia have the ability to extract Pb Cd Cr Mn and Fe from their water surroundings on the whole the roots presented higher concentrations of heavy metals than the stem and the leaves The highest accumulation of heavy metals was observed in plants growing at the site near the channel entering the lagoon S americanus accumulated more Pb Cr Mn and Fe than T latifolia Cd concentrations were comparably the same in both species This study provides information in relation to aquatic plants growing in polluted waters which accumulate heavy metals These findings are of interest pertaining to the removal processes for treating aquatic systems with heavy metal contentThis work was carried out with the financial support from Sistema de Investigación Miguel Hidalgo SIHGO no2002020605 CCA was awarded a graduate fellowship from the Consejo Nacional de Ciencia y Tecnología CONACYT no173383 and the SIHGO AJAC was also granted with a fellowship from the SIGHO We wish to express our gratitude to Secretaría de Ecología y Gestión Ambiental SEGAM and MC Joel Milán Navarro Universidad Autónoma de San Luís Potosí for his technical assistance

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