离心分离-酚酞溴酚蓝双指示剂中和法测定土壤中的碳酸根和碳酸氢根
Determination of Carbonate and Bicarbonate in Soil Samples by Centrifugal Separation and Dual Indicator Method
角文升 1王应平 1蒲利国 1刘兴龙1
作者信息
- 1. 云南省有色地质局测试中心,云南 昆明 650000
- 折叠
摘要
通过优化土壤浸出液的制备方法和指示剂的选择,选择离心分离作为浸出液制备方法,酚酞作为碳酸根滴定终点的指示剂,溴酚蓝作为碳酸氢根滴定终点的指示剂,在测定土壤中CO2-3 和HCO-3 时,取得了较好的效果.为正在开展的土壤三普检测工作提供重要的参考依据.
Abstract
This article optimizes the preparation method and indicator selection of soil leaching solution,selecting centrifugal separation as the preparation method of leaching solution,phenolphthalein as the indicator for carbonate titration endpoint,and bromophenol blue as the indicator for bicarbonate titration endpoint.Good results have been achieved in the determination of CO-23 and HCO-3 in soil.The resutls provide impor-tant reference basis for the ongoing soil popularization testing work.
关键词
双指示剂中和法/碳酸根/碳酸氢根/离心分离Key words
dual indicator method/carbonate/bicarbonate/centrifugal separation引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据