OBTENÇÃO DE RESULTADOS QUANTITATIVOS PARA CONCENTRAÇÃO DE CHUMBO EM SOLO COM EQUIPAMENTO XRF PORTÁTIL.

Determining quantitative lead concentration in soil with portable XRF equipment

Abstract

Lead is an element considered a contaminant by various national and international environmental agencies. Tests with portable x-ray fluorescence equipment (XRF-P) are performed in soil for the detection of this element, since these devices have many advantages, such as portability, ease of use, low cost, through linear regressions and statistical tests between the results obtained by XRF-P and standardized laboratory tests performed on high speed, high accuracy and non destructive detection. The possibility of using this equipment to perform quantitative surveys of Pb in surface soils in the interior and neighborhoods of an area under environmental investigation was verified in this study. Such verification was made paired samples. With the statistical treatment applied to the data, it was possible to develop a regression equation that allows the calculation of reliable quantitative Pb concentrations in the soil from the results obtained by the XRF-P for the studied area. The data obtained by XRF-P was classified as definitive according to USEPA (1988) and quantitative according to Shuttleworth et al. (2014).