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AbstractAbstract
[en] The main sources of direct lead intake are studied, and metal concentrations in several medium are examined. Lead was extracted by dithizone in C Cl4, being determined by optical spectrophotometry. 212 Pb was used as a radioactive tracer in low concentration measurements of the metal, and analysis of its 239 KeV peak was done by a Ge-Li detector. In blood samples, the metal was complexed and extracted with APDC in MIBK, being measured by flame less atomic absorption spectrophotometry. Air samples were also collected for periods of 24 hours and 90 minutes. Representative street dust samples were examined, showing a strict correlation with lead in air. It was also estimated the amount of lead in some human blood samples. (author)
Original Title
Estudos iniciais da poluicao por chumbo na Guanabara
Primary Subject
Secondary Subject
Source
1973; 123 p; Tese (M.Sc.).
Record Type
Miscellaneous
Literature Type
Thesis/Dissertation
Report Number
Country of publication
BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BIOLOGICAL MATERIALS, BODY FLUIDS, CARBAZONES, CARBONIC ACID DERIVATIVES, CHELATING AGENTS, CONTROL, ELEMENTS, EVALUATION, EVEN-EVEN NUCLEI, FLUIDS, GASES, GE SEMICONDUCTOR DETECTORS, HEAVY NUCLEI, HOURS LIVING RADIOISOTOPES, HYDROGEN COMPOUNDS, ISOTOPES, KETONES, LEAD ISOTOPES, LI-DRIFTED DETECTORS, MATERIALS, MEASURING INSTRUMENTS, METALS, NUCLEI, ORGANIC COMPOUNDS, ORGANIC NITROGEN COMPOUNDS, ORGANIC SULFUR COMPOUNDS, OXYGEN COMPOUNDS, RADIATION DETECTORS, RADIOISOTOPES, REAGENTS, SEMICONDUCTOR DETECTORS, SPECTROSCOPY, WATER
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