Resumo

CARTAYA, O; REYNALDO, Inés; MARRERO, Oraima  e  PENICHE, C. Adsorción de iones Cu2+ por quitosana y su aplicación al suelo para la protección de las plantas ante la toxicidad del metal. cultrop [online]. 2008, vol.29, n.3, pp. 87-91. ISSN 0258-5936.

Some chemical properties of metal adsorption by chitosan are evaluated in this research work. Thus, the power of chitosan adsorption by Cu2+ metallic ion was comparatively studied at different pH values and stirring times. The adsorbed Cu2+ ion content was determined by atomic absorption, pH 5 being the most appropriate one for its adsorption. On the other hand, several trials were performed to analyze the possibility of chitosan to protect tomato plantlets from toxic levels of Cu2+, so proving a bigger root growth and a height decrease of plants treated with the product, effects counteracting toxicity by Cu2+.

Palavras-chave : bioproducts; chitosan; ions; tomatoes.