络合滴定法测定钾钙肥中有效CaO指示剂的探讨  

Discussing Effective CaO Indicator in Potassium and Calcium Fertilizer Measured by Complex Titration Method

作　　者：江鸥[1] 朱云勤[1] 赵云端[1] 

机构地区：[1]贵州大学理学院化学系,贵州贵阳550025

出　　处：《化肥设计》2009年第6期56-58,共3页Chemical Fertilizer Design

基　　金：贵州省科技成果重点推广计划项目"钾钙肥工业生产示范"。合同编号:黔科合成字(2006)5005

摘　　要：以钾钙肥中钙含量的测定方法为研究对象,分别将CMP、K-B和钙指示剂用于EDTA络合滴定法测定钾钙肥中有效氧化钙,比较了3种指示剂的精密度和准确度,讨论了实验数据和测定结果。结果表明,3种指示剂都可用于络合滴定法中测定钾钙肥中有效氧化钙的含量,其中CMP和K-B指示剂测定结果优于钙指示剂。Taking the measure method of calcium content in potassium/calcium fertilizer as a research object, respectively adopting the CMP, K- B and calcium indicators in the EDTA complex titration method to measure the effective calcium-oxide in potassium/calcium fertilizer, author has compared the precision and accuracy for the three kinds of indicators, has discussed the experimental data and the measuring results. The result indicates that three kinds of indicators can be all used in the complex titration method to measure the effective calcium-oxide in potassiunt/calcium fertilizer; however the re- sult measured by CMP, K- B indicators is better than that measured by calcium indicator.

关 键 词：络合滴定法 钾钙肥 钙含量 测定 指示剂 

分 类 号：TQ444.9[化学工程—化学肥料工业]