3.13.2. Soil sample analysis
The developed method was also applied to the determination
of carbendazim in soil samples under the optimum conditions. The
results (Table 3) revealed that there are no residues of carbendazim
in soil samples No. 2 and 3 but for No. 1 soil sample,
carbendazim was found to be 0.218 mg g1
. The spectra of soil
sample with and without carbendazim are presented as Fig. 7.
The recovery tests for the soil samples were also performed by
spiking the soil samples with carbendazim concentrations of 50
and 100 ng mL1
. The analyzed results are shown in Table 3, as
can be seen, the recoveries were ranged from 95.4 to 104.6%. Also,
in order to investigate of the accuracy of the suggested method,
the obtained result from No.1 soil sample was compared with
HPLC using Sylvaine et. al method [31] for sample preparation. The
results are presented in Table 4. According to the Student's t-test