Abstract:
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
