Buscar
Mostrando ítems 1-10 de 2296
Isotopic and elemental determination of lead in particulate matter in the cities of Goiânia (GO) and Rio Claro (SP) using ICP-MS technique
(Universidade Estadual Paulista (Unesp), 2016-09-13)
The toxic metal lead (Pb) can be harmful to human health in various manners, but is also considered as a distinguished tracer of environmental pollution, since the relative abundance of its four stable isotopes with the ...
Isotopic and elemental determination of lead in particulate matter in the cities of Goiânia (GO) and Rio Claro (SP) using ICP-MS techniqueDeterminação isotópica e elementar de chumbo em material particulado nas cidades de Goiânia (GO) e Rio Claro (SP) utilizando a técnica ICP-MS
(Universidade Estadual Paulista (Unesp), 2016)
Evidence for a correlation between total lead concentrations in soils and the presence of geological faults
(2017-09-01)
The emission of radon gas in regions of geological faults, during the radioactive decay of uranium and thorium, results in the formation of lead isotopes 210Pb, 208Pb, 207Pb and 206Pb. As a consequence, the lead contamination ...
Different lead sources in an abandoned uranium mine (Urgeirica - Central Portugal) and its environment impact - isotopic evidence
(GEOLOGICAL SOC PUBL HOUSEBATH, 2012)
Different lead sources were identified in a large uranium tailings deposit (5Mton) in the Central Region of Portugal using lead isotopic ratios obtained by ICP-QMS. These ratios helped to clarify the different sources of ...
APPROXIMATE RADIOMETRIC DATING METHOD FOR A COMMON CHONDRITE USING THE PB206-PB207 ISOTOPIC SYSTEM BY ELECTRON MICROPROBECHEMICAL ANALYSIS OF METAMORPHIC PLAGIOCLASESMÉTODO DE DATAÇÃO RADIOMÉTRICA APROXIMADA DE UM CONDRITO COMUM UTILIZANDO O SISTEMA ISOTÓPICO PB206-PB207 ATRAVÉS DE ANÁLISE QUÍMICA DE MICROSSONDA ELETRÔNICA DE PLAGIOCLÁSIOS METAMÓRFICOS
(Instituto de Geociências e Ciências Exatas, Universidade Estadual Paulista, 2020)
LEAD DISTRIBUTION AND ISOTOPE SIGNATURE IN BOTTOM SEDIMENTS OF GUAMA RIVER AND GUAJARA BAY (BELEM - PARA)
(SOC BRASILEIRA QUIMICASAO PAULO, 2012-09)
LEAD DISTRIBUTION AND ISOTOPE SIGNATURE IN BOTTOM SEDIMENTS OF GUAMA RIVER AND GUAJARA BAY (BELEM - PARA). Lead analyses in bottom sediments from the hydrographic system of Belem (Para) indicated low contents of this metal ...
Intoxicación por plomo: diagnóstico diferencial de dolor abdominal crónico. Reporte de caso y revisión de tema
En este artículo se presenta el caso de un paciente con intoxicación crónica por plomo, cuya principal manifestación clínica fue dolor abdominal. Esta es una intoxicación que generalmente se presenta en pacientes que están ...
Lead and life
(Research Signpost, 2010)
Lead is naturally distributed in all ecosystems, but excessive use resulting from urbanization and industrial processes has increased its concentration in the environment. Lead is a persistent pollutant in nature; it cannot ...
Solid state NMR as a new approach for the structural characterization of rare-earth doped lead lanthanum zirconate titanate laser ceramics
(ELSEVIER SCIENCE BV, 2008)
To facilitate the design of laser host materials with optimized emission properties, detailed structural information at the atomic level is essential, regarding the local bonding environment of the active ions (distribution ...