Quantitation of sodium mercaptoundecahydrododecaborate (cas 12294-22-3) by capillary isotachophoresis

Add time:08/10/2019    Source:sciencedirect.com

A simple, specific and accurate method for the quantitation of sodium mercaptoundecahydrododecaborate (cas 12294-22-3), which is a very hygroscopic agent for boron neutron-capture therapy, was developed by using capillary isotachophoresis with sodium p-toluenesulphonate as an internal standard. Compound 1a was separated and identified using 0.01 M hydrochloric acid and β-alanine as the leading electrolyte and 0.01 Mn-caproic acid as the terminating electrolyte. It could be resolved well from the oxidation products, sodium sulphidobis (undecahydrododecarborate) and sodium sulphidobis (undecahydrododecarborate) S-oxie, and the detection limit was 0.7 μmol/ml.

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