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Fe3+ > Cu2+ > Mn2+ > Ni2+ > Cd2+ and D-(+)-Lactose > Imidazole > L-Tyrosine > L-Histidine > D-(+)-Sucrose. Dynamic range and detection limit of all quencher were determined. Sucrose has the best dynamic range and low detection limit, so sucrose considered as an analyte and then the total sucrose extracted from sugar beet as real sample was measured by this proposed method. Dynamic range, detection limit, mean intra-day and inter-day relative standard deviation (RSD%) were 6.67×10-7- 1.20×10-5, 1.0×10-8, 5.62%, 7.25% (n=3) respectively. For accuracy determination, the percentage recovery was found 97.4%- 104.3%. All interferences were investigated and Co2+, D-(+)-Lactose had most interference. Sucrose percentage of the measured sample was 17 percent. These results are comparable with the results of the standard method to determine the sucrose and is acceptable.]]>
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