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我们在研究橡椀栲胶单宁与四价钒络合物组成时,发现试剂单宁酸(即鞣酸,Tannic Acid)与四价钒所形成的蓝色络合物具有很好的稳定性,因而提出将这种试剂用于栲胶脱硫溶液中总钒的测定。在测定了络合物组成、稳定常数、克分子吸光系数的基础上,又进行了条件试验和分析方法对比试
When we studied the composition of rubber tannin tannin and tetravalent vanadium complex, we found that the blue complex formed by the reagent tannin (tannic acid) and tetravalent vanadium has good stability Therefore, it is proposed that this reagent be used for the determination of total vanadium in the desulfurization solution of viscose. Based on the determination of the complex composition, the stability constant and the molar absorptivity of molybdenum, the conditions of test and analysis methods were compared