Abstract
Detailed investigations have been carried out on the well-known method of spectrophotometric determination of boron particularly in uranium compounds as boron-curcumin complex after extraction into 2-ethyl hexane 1,3-diol (EHD) to understand a number of parameters, which have not been addressed earlier in the literature. These include (i) effect of different acid media on analytical results of boron which are employed for dissolution of nuclear fuel samples, (ii) effect of diluents namely ethyl alcohol and N,N-dimethyl formamide on sensitivity of method which are employed for final dilution, and (iii) studies on loss of boron, if any, during conversion of uranium compounds to U3O8. Based on the present studies, the existing procedure has been suitably modified to improve the sensitivity in the measurements. In addition, this paper also describes about interference studies with Al, Cr, Mg, Ca, Fe, Mn, Mo, F− and W and amount of EHD on modified method. Absolute detection limit was found to be 10 ng. The precision and accuracy of the method, is 3% at level 100 ng·g−1 of boron.
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