Browsing Exact and Earth Sciences by Author "Scheffler, Guilherme Luiz"
Now showing items 1-3 of 3
-
A comparative study of sheathing devices to increase robustness in inductively coupled plasma optical emission spectrometry via a nitrogen flow
Scheffler, Guilherme Luiz; Pozebon, Dirce; Beauchemin, Diane (2018) [Journal article]Five different glass sheathing devices were used to introduce 20 mL min 1 N2 sheathing gas around the effluent from the spray chamber to see the effect of their dimensions on plasma robustness as measured using the Mg II ... -
Risk assessment of trace elements in airborne particulate matter deposited on air filters using solid sampling ETV-ICPOES to measure total concentrations and leaching with simulated saliva, gastric juice and lung fluid to estimate bioaccessibility
Scheffler, Guilherme Luiz; Sadiq, Nausheen; Pozebon, Dirce; Beauchemin, Diane (2018) [Journal article]Potentially toxic elements (PTEs) in airborne particulate matter (APM) can cause adverse effects on human health, especially in urban and (current and former) industrial areas. The severity of health effects depends on the ... -
A teoria dos campos conceituais de Vergnaud e o ensino de radioatividade
Scheffler, Guilherme Luiz; Del Pino, Jose Claudio (2013) [Journal article]Este trabalho consiste na utilização da teoria dos campos conceituais de Vergnaud como referencial teórico para as aulas de química. O principal objetivo foi avaliar as contribuições do uso desta teoria no ensino de ...