利用电石渣制备轻质碳酸钙浸渍液中主组分的测定
Determination of Main Components in Impregnation Solution of Light Calcium Carbonate Prepared by Calcium Carbide Residue
摘 要
对用电石渣制备轻质碳酸钙工艺过程的浸渍液中钙(Ⅱ)、氯离子、游离氨和铵离子的测定方法进行系统试验.提出了煮沸蒸发使游离氨直接被硫酸溶液吸收,然后用碱滴定法间接测得游离氨的含量;氯离子采用硝酸根标准溶液沉淀滴定法;铵离子采用在碱溶液中使铵根离子转化氨气蒸馏逸出,用硫酸溶液吸收后氢氧化钠标准溶液滴定的方法;钙(Ⅱ)采用EDTA滴定法.方法的相对标准偏差(n=5)在1.4%~2.4%之间.
浸渍液
电石渣
Calcium carbonate
Impregnation solution
Calcium carbide residue
Abstract
A systematic analysis on the methods for measurement of calcium(Ⅱ),chloride ions,free ammonia and ammonium ions in impregnation solution of light calcium carbonate prepared by calcium carbide residue was performed.The following method was proposed:free ammonia was absorbed by sulfuric acid solution directly in the process of boiling evaporation,then measured indirectly by alkalis titrimetric method;chloride ion was measured by silver nitrate titration;ammonium ions escaped during distillation were converted to NH3 in alkali solution,was then absorbed by sulfuric acid solution and titrated with sodium hydroxide standard solution;calcium(Ⅱ) was detected by EDTA titrimetry.RSD (n=5) of the method found was in the range of 1.4%-2.4%.
中图分类号 O655.2 DOI 10.11973/lhjy-hx201508017
所属栏目 工作简报
基金项目
收稿日期 2014/8/1
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备注冯冬梅(1975-),女,新疆人,高级工程师,博士,研究方向为材料科学与工程及固体废弃物综合利用.
引用该论文: FENG Dong-mei,LIU Yuan,TANG Sheng-liang,CAI Yu-liang,YE Xu-chu. Determination of Main Components in Impregnation Solution of Light Calcium Carbonate Prepared by Calcium Carbide Residue[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2015, 51(8): 1113～1115
冯冬梅,刘渊,汤升亮,蔡玉良,叶旭初. 利用电石渣制备轻质碳酸钙浸渍液中主组分的测定[J]. 理化检验－化学分册, 2015, 51(8): 1113～1115
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