摘要
采用氟硅酸钾容量法对硅肥中测定有效硅含量的实验条件进行了研究。氟硅酸钾容量法能够准确、快速、简便测定硅肥中有效硅含量。推荐沉淀冷却时间应控制在30min以上;沉淀的洗涤温度应控制在15℃以下;滴定指示剂可选用酚酞;通过对氟硅酸钾分析纯的水解,验证此方法水解完全。
The test conditions of determination method for available SiO_2 content in silicon-containing fertilizer with potassium fluorosilicate volumetric analysis were studied.The available SiO_2 content in silicon-containing fertilizer can be exactly determined with potassium fluorosilicate volumetric analysis. The recommendatory refrigerant time must be above 30 min ;the washing for deposit temperature must be controled under 15 degree;the indicator of titration shold be phenothalin.By the hydrolyzation of potassium fluorosilicate ,the hydrolyzation can be validated absolutely.
出处
《辽宁化工》
CAS
2005年第5期226-228,共3页
Liaoning Chemical Industry
关键词
硅肥
有效硅
氟硅酸钾容量法
测定方法
Silicon-containing fertilizer
Available SiO_2
Potassium fluorosilicate volumetric analysis
Analytical process
