TITLE:
Assessment of Calcimetric and Titrimetric Methods for Calcium Carbonate Estimation of Five Soil Types in Central Sudan
AUTHORS:
Jamal T. Elfaki, Mohamed O. Gafei, Magboul M. Sulieman, Mushtaha E. Ali
KEYWORDS:
Ecological Regions, Central Sudan, Calcimeter, Titration Method
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.4 No.1,
January
22,
2016
ABSTRACT: Despite
the CaCO3 estimation using titration method was not reliable, but up
to the present time, some soil laboratories in Sudan still used this method.
The objective of this study was to compare and assess the results of calcimetric
and titrimetric methods of quantitative estimation for soil calcium carbonate
of different soils in Sudan. 26 soil samples from five soil profiles were
collected from different climatological and ecological regions in central
Sudan. CaCO3 equivalent was estimated using calcimeter and titration
methods in order to find accurate, rapid and suitable method for soils of Sudan.
The results revealed that there are no significant differences between calcimeter
and titration methods for calcium carbonate estimation in all studied samples
except in samples from Gedaref area. We concluded that when the Calcimeter
method used for CaCO3 estimation, the differences between one person
and another in detecting titration end point would be avoided, rapid and
accurate results would be obtained compared to titration method. Additionally,
time would be saved; fewer amounts of chemicals would be used. From this study,
we highly recommend using calcimeter method for CaCO3 estimation for
soils of Sudan.