Measurement Of Fats, Oil And Grease By
Spectro-photometry And Its Application On
Different Sites At São Paulo State, Brazil
Author(s)
D. M. Bonotto, L. Caprioglio, M. Torres, H. K. Itoman
& R. Dalmora
Abstract
This investigation was carried out within the Paraná sedimentary basin, Brazil,
involved the sampling of effluents and groundwater from monitoring stations
situated at different sites at São Paulo State, and was realized with the purpose of
evaluating the presence of fats, oil and grease (FOG) in different matrices.
Several tests were realized with very distinct materials (cooking oil, butter,
margarine, pig fat, vacuum pump oil) in order to properly calibrate the
spectrophotometric system. Each matrix was dissolved with 1,1,1-trichloroethane
and from the stock solutions it was prepared working standards from different
dilutions. The data obtained were plotted on absorbance vs. concentration graph
that yielded a successful calibration curve when a mineral oil for vacuum pump
was utilized in the experiments at a wavelength corresponding to 410 nm. The
results obtained for the analyzed samples were compared with the limiting value
established by the São Paulo State legislation on the prevention and pollution
control of the environment that was established in 8th September 1976 by Rule
No. 8468.
Keywords: fats, oil, grease, spectrophotometry, vinasse, dairy effluents,
groundwater, São Paulo State.
1 Introduction
The fats, oil and grease (FOG) found in food ingredients such as meat, cooking
oil, shortening, butter, margarine, baked goods, sauces and dairy products is a
Keywords
fats, oil, grease, spectrophotometry, vinasse, dairy effluents,
groundwater, São Paulo State.
Related Book
Other papers in this volume
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