摘要
利用自动电位滴定法测定化工产品吡啶－三苯基硼中硼的含量。对消解体系中硝酸－硫酸比例、温度、消解时间等条件，以及硼酸酸性强化剂甘露醇用量等进行了优化。在优化的消解和电位滴定条件下，测得本批次产品中硼的平均值含量为3．32％，纯度为98．52％。方法标准偏差为9．97％，回收率91．9％～109．6％。此方法简单、方便可行，测定结果稳定。
The determination of the contents of boron in the pyridine triphenylborane was studied by the method of automatic potentiometric titration. The experimental conditions such as the rate of nitric acid and sulfuric acid, temperature, digestion time and dosage of mannitol were investigated in this paper. The results show that the average content of boron in the samples is 3.32% and the purity of the samples 98.52%. The relative standard deviation of the method is 9.97% and the average recovery is 98.09% .This method is simple, convenient and accurate.
出处
《丽水学院学报》
2012年第5期49-51,共3页
Journal of Lishui University
关键词
湿式消解法
吡啶-三苯基硼
电位滴定法
硼
wet digestion
pyridine-triphenyl borane
potentiometric titration
boron
