摘要
氟硅酸钾容量法测定含氟废水中的氟硅酸含量是依据氟硅酸在有过量钾离子存在下的强酸性溶液中与氟离子作用形成氟硅酸钾(KSi F)沉淀。该沉淀在热水中水解并生成氢氟酸。因而可用氢氧化钠标准溶液进行滴定,进而求得样品中氟硅酸的含量。
The basis of potassium fluosilicate volumetric method is the formation of potassium silicofluoride(KSi F) precipitation in strongly acidic solution containing excess potassium and fluoride.The fluosilicic acid content in the sample can be calculated by titrated with sodium hydroxide standard solution,since this precipitate will be hydrolyzed in hot water and produce hydrofluoric acid.
作者
蒋捷
沈艳
廖晓斌
廖松
JIANG Jie;SHEN Yan;LIAO Xiaobin;LIAO Song(Comprehensive testing center of Xinyu,Jiang Xi,Xin Yu 338000)
出处
《江西化工》
2022年第4期56-58,共3页
Jiangxi Chemical Industry
基金
江西省市场监管局科技项目(GSJK201922)。
关键词
含氟废水
氟硅酸
碱滴定
Fluoride wastewater
Fluosilicic acid
Base tritation
