摘要
沸水溶解岩盐样品,过滤除去水不溶物,分取部分滤液在pH值5.2～5.6乙酸铵缓冲液中,硼可与甲亚胺-H酸生成可溶性的棕黄色络合物,吸光度与硼的浓度成正比。其标准回收率为94.9%～102.4%,相对标准偏差为0.79%～1.26%(RSD,N=5)。建立的分析方法准确度、灵敏度、精密度高,方法简便、快速,适用于各类岩盐中总硼含量的分析研究。
To dissolve halite sample in the boiling water, and disregard these substance which can not dissolve in the water by filtrate, then put this liquid into pH=5.2-5.6 acetic ammonium solution. Boron and azomethine-H acid become dissolubility of yellow complex compound. And its absorptivity and concentration of boron content are in direct proportion. Its normative recycle-rate was 94.9% to 102.4%, relative standard deviation was 0.79% to 1.26%（RSD, N=5）. This analysis method and its accuracy, sensitivity, exactitude,simple,speed are better. It can apply to determine totally boron content in all kinds of halites.
出处
《中国非金属矿工业导刊》
2009年第4期36-37,共2页
China Non-Metallic Minerals industry
关键词
甲亚胺-H酸分光光度法
岩盐
硼
azomethine-H acid by spectrophotometer
halite
totally boron content
