The content of certain metals in 13 medicinal teas made from 16 plant species was measured by flame photometer and atomic absorption spectrometer with flame methods. The measurements were evaluated against metal intake levels recommended by health authorities. The results indicate that the medicinal teas...
Abstract Concentrations of ten elements (Cd, Cr, Cu, Fe, Ni, Pb, Se, Sr, V and Zn) were determinate in muscle tissues of 13 fish species from Aratu Bay, Bahia, Brazil by inductively coupled plasma optical emission spectrometry. The accuracy and precision of our results were checked by using two certified...
Abstract:Reports on the abundances and on metal concentrations in intertidal estuarine invertebrates from the Eastern Tropical Pacific are rare. Thus, the objectives of this report are to make accessible data on the abundances (1984-1987, 49 dates; 2013, 12 dates) of sipunculans, brachiopods and hemichor...
Distribución Animal,
Cordados no Vertebrados/fisiología,
Costa Rica,
Monitoreo del Ambiente/métodos,
Estuarios,
Sedimentos Geológicos,
Invertebrados/fisiología,
Metales/análisis,
Nematodos/fisiología,
Océano Pacífico,
Densidad de Población,
Valores de Referencia,
Estaciones del Año,
Agua de Mar/química,
Análisis Espacio-Temporal,
Especificidad de la Especie,
Espectrofotometría Atómica,
Contaminantes Químicos del Agua/análisis
In this work, samples of the medicinal plants: Boldo (Peumus boldus), Castanha da Índia (Aesculus hippocastanum), Chá Verde (Camelia sinensis), Erva Cidreira (Melissa officinalis), Espinheira Santa (Maytenus ilicifolia), Guaraná (Paullinia cupana), Maracujá (Passiflora sp.), Mulungu (Erythrina veluti...
A method to evaluate metal enrichment in marine sediments. In order to evaluate metal enrichment in sediments , a method is proposed and tested in Bahia Culebra and the Golfo de Nicoya, Costa Rica through the normalization of the elements against aluminum, and by linear regression of the logarithm of the...
Sio2, Li,Na,K,Ca,Mg,Cu,Zn,Fe,Pb, and ash content in equisetum bogotense HBK and equisetum giganteum L.(equisetaceae) in aerial parts were determined. These plants are used in natural and homoeopathic medice because of their therapeutic properties...
A indústria do petróleo caracteriza-se pela multiplicidade de exposiçöes potenciais a agentes tóxicos e, por causa disso, encontra-se em desenvolvimento o Programa de Toxicologia Industrial, previsto na Política de Saúde Ocupacional da PETROBRAS. Deste manual, que muito contribuirá para o desenvo...
Através de análise dos surfactantes determinados pelo método colorimétrico com azul de metileno, e dos metais pesados determinados por espectrofotometria de absorçäo atômica, como o cádmio, chumbo, cobre, cromo, mercúrio e zinco, foi caracterizada a poluiçäo na Represa Billings, SP (Brasil), e...
