是否问题

By fuming with sulfuric-phosphoric acid mixture the residual hydrofluoride was then expelled，and boron was finally determined by curcumin spectrophotometry after distillation.

同时，对所拟溶样条件下所得硼的分析是否为全硼行了一步探讨，证，所拟溶样条件下硼的测为全硼。