Desenvolvimento de dispositivo fotÃnico para monitoramento de metais poluentes em recursos hÃdricos

AUTOR(ES)
DATA DE PUBLICAÇÃO

2004

RESUMO

In this work they were studied some properties of a polymeric of the class of the superabsorbents (SAP), that is used broadly in the industry of products of personal care. This polymeric one that is a derived of the acrylic acid formed by reticulation of nets crosslink, an excellent agent complexante was shown, for presenting in its structure groups amids and carbonilics. Complexes contend Ãons lantanides they were produced proceeding broken of synthesis already known, being these complex ones quite efficient of the point of view of its luminecense. PSA was dopado with complex Eu(btfa)3terpy as well as the EuCl3 for they present a very well-known spectroscopy, with special attention for hipersensitive of its band 5D0τ7F2, being the same ones anchored in its interior by chemical interactions, that were confirmed by spectroscopy studies. Studies still gone back to the capacity of complexation of the polymeric they were made being used transition metals, with special attention for the copper. So much of the aspect colorimeter as of the spectroscopic, a accentuaty complexation is observed for this metal type. The systems of PSA with the complex and with europium salt they were placed in contact with samples of defined concentrations of transition metals, especially studies for interactions of the metals copper and manganese were made and they were shown quite promising, for they be inside different and selective of the standard spectroscopics for the ion Eu3+. A type of fingerprint it is registered in the several multipletos of the spectrum of the ion lantanides, for each metal. With base in that study will be possible to build a device with sensorial capacity for aqueous samples that contain these types of metals

ASSUNTO(S)

recursos hÃdricos quimica dispositivo fotÃnico metais poluentes

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