Determination and Evaluation of the Metals and Metalloids in the Chapeu-de-couro (Echinodorus macrophyllus (Kunth) Micheli)

Abstract

The Chapeu-de-couro (Echinodorus macrophyllus (Kunth) Micheli) is a native plant from Brazil, which has been mainly used in medicinal application being a potent antirheumatic and diuretic, in the production of soft drinks, and also in the ornamentation of aquariums. In this paper, the metals and metalloids for the leaves of chapeu-de-couro collected in the Paraguacu River from the city Cachoeira, Bahia State, Brazil, was determined and evaluated using multivariate analysis. The samples were digested using nitric acid and hydrogen peroxide and were analyzed using inductively coupled plasma mass spectrometry. The accuracy of the method was confirmed by analysis of a certified reference material of apple leaves, furnished by National Institute of Standard and Technology. The study involved 15 samples of the Paraguacu River. The results expressed as milligrams of element per kilogram of sample demonstrated that the concentration ranges varied: 1.39-5.27 for chromium, 44.85-165.39 for manganese, 0.55-0.84 for arsenic, 0.01-3.94 for antimony, and 0.18-0.31 for lead. The principal component analysis and hierarchical cluster analysis evidenced that the concentrations of the metals and metalloids varied according with the variations in the water of the Paraguacu.

Marcadores químicos em espécies de <i>Echinodorus</i> (Alismataceae) utilizadas como chapéu-de-couro

“…O chapéu-de-couro é importante para o paisagismo, várias espécies pertencentes são importadas para países da Europa com essa finalidade [10]. Também, pode ser utilizado na descontaminação de aquíferos poluídos [11,12], uma vez que este demonstra-se eficiente na fitorremediação de chumbo a níveis de traços [13][14][15].…”

Determination of micro and macro elements in iron supplements used for treatment of anemia and evaluation employing chemometric analysis tools

“…Barbosa et al proposed the evaluation of metals and metalloids content in the Chapeu-de-Couro (Echinodorus macrophyllus (Kunth) Micheli) employing chemometric analysis tools. 14 Froes et al proposed the use of exploratory analysis for evaluate of microelements in fruit juice determination by ICP OES. Other papers describe the application of these statistic tools for evaluation of chemical dates.…”