摘要
采用铋磷钼蓝分光光度法测定氮化钒铁中的磷含量。研究了显色体系稳定性、显色体系酸度、显色剂用量等对测定结果的影响。结果表明,显色时间为20min,在4%~7%的硝酸介质中,钼酸铵加入量为4~10mL范围内吸光度值最大且稳定。确立了氮化钒铁中磷含量的检测条件;同时对方法准确性和精密度进行研究。研究与应用实践表明,该方法操作简便、测定结果准确、具有较强的实用性。
The amount of phosphate in iron vanadium nitride was determined by the bismuth phosphomo- lybdate blue spectrophotometric method. The effect of the stability of the coloring system, the acidity and the amount of coloring agent was studied. As a result, the optinum conditions for the test were obtained, and the accuracy and precision of the method were ascertained. The results show that the method is sim- ple, fast, precise and accurate.
出处
《化学世界》
CAS
CSCD
北大核心
2013年第11期649-651,658,共4页
Chemical World
基金
河北省科技支撑项目(12214903)
关键词
氮化钒铁
磷
分光光度法
ferrovanadium nitride~ phosphorus~ spectrophotometry