自动电位滴定法测定石煤浸出液中钒含量  

Determination of Vanadium in Leaching Solution of Stone Coal Containing Vanadium with Automatic Potentiometric Titration Method

作　　者：何东升[1] 徐雄依[1] 池汝安[1] 秦芳[1] 罗彤[1] 

机构地区：[1]武汉工程大学环境与城市建设学院,湖北武汉430073

出　　处：《有色矿冶》2012年第3期88-91,共4页Non-Ferrous Mining and Metallurgy

基　　金：国家"十二五"科技支撑计划资助项目(2012BAB07B03);国家自然科学基金资助项目(51144003);湖北省自然科学基金资助项目(2011CDB223);湖北省教育厅资助项目(Q20121504);武汉工程大学第七届校长基金资助项目

摘　　要：采用自动电位滴定的方法测定含钒石煤酸浸液中钒,准确度高,操作简便,分析时间短。考查了浓硫酸、浓磷酸、高锰酸钾、尿素、亚硝酸钠等试剂加入量对滴定结果的影响,试验结果表明,合适的加入量为浓硫酸5 mL,浓磷酸10 mL,0.2%高锰酸钾0.3 mL、10%尿素5mL、1%亚硝酸钠0.35 mL。The amounts of vanadium in leaching solution of stone coal containing vanadium could be determined with the method of automatic potentiometric titration, which has the advantages of ideal accuracy, ease of operation and high efficiency. It also gives insights into the investigation of the effects of certain reagents addition amounts, such as sulphurie acid, phosphoric acid , potassium permanganate, etc. Results indicate that the ideal determining con- dition could be achieved by adding 5 mL sulphuric acid, 10 mL phosphoric acid, 0.2% potassium permanganate solution 0.3 mL, 10% earbamide solution 5 mL and 1% sodium nitrite 0.35 mL.

关 键 词：电位滴定 石煤 钒 浸出液 

分 类 号：O657[理学—分析化学]