简便快速分离测定卤水中的钙镁钡锶  

DETERMINATION OF OF CALCIUM,MAGNESIUM,BARIUM AND STRONTIUM IN BRINE WETH SIMPLE AND RAPID SEPARATION

作　　者：冯正光[1] 汪淼 

机构地区：[1]成都理工学院,成都勘察测绘研究院

出　　处：《矿物岩石》1994年第1期97-100,共4页Mineralogy and Petrology

摘　　要：本文用氢氧化钠溶液ρ（ＮａｏＨ）＝３５０ｇ／Ｌ在９０℃左右将钙镁沉淀分离后，用盐酸溶解其沉淀，以ＥＤＴＡ配位法滴定测得钙和镁的含量。滤液经盐酸酸化后，加适量硫酸将钡沉淀而与锶分离。以重量法测定钡，ＥＤＴＡ配位法测定锶。本法简便、快速，通过多批量样品实测应用，其结果均合符生产要求。Calcium and magnesium are separated from brine sample with ρ(NaOH)=350g/L as precipitant at the temperature of about 90℃,then the sample is determined by EDTA complexom-etry. After the filtrate is aciuified by hydrochloric acid,add appropriate amount of sulfuric acid to precipitate barium so as to separate barium from strontium. Barium is determined by gravimetric analysis and strontium is determined by EDTA copmlexometry.This is a simple and rapid analy-sis method. The applieation of this method in the analysis of lots of brine samples shows that the analytical results are satisfactied the requirement of routine analysis of brine sample.

关 键 词：卤水 沉淀分离 钙 镁 钡 锶 

分 类 号：P641.5[天文地球—地质矿产勘探]