中碳锰铁矿中锰和铁的连续测定研究  

Study on Continuous Titration Detemination of Manganese and Iron in the Manganese Ore

作　　者：赵小波[1] 王京平[1,2] 杨兴裕[1,3] 孔祥燕[1,3] 

机构地区：[1]江苏省滩涂生物资源与环境保护重点建设实验室,江苏盐城224002 [2]盐城师范学院应用化学与环境工程研究所,江苏盐城224002 [3]江苏五洲焊接有限公司,江苏盐城224002

出　　处：《广东化工》2009年第6期159-161,267,共4页Guangdong Chemical Industry

基　　金：江苏省滩涂生物资源与环境保护重点建设实验室项目资助(JLCBE06001);江苏省高等学校大学生实践创新训练计划项目资助

摘　　要：文章就中锰矿中锰和铁的测定进行了研究。在pH为5.4的六亚甲基四胺-盐酸缓冲介质中,以Cu-EDTA-PAN-6S作混合指示剂,用EDTA络合滴定锰;在pH为5.0的HAc-NaAc缓冲介质中,以PAN-6S为指示剂,用EDTA络合滴定铁;终点变色敏锐,准确度高,锰、铁比例在1∶10～10∶1范围之间相互无影响。此方法可用于中锰矿中锰和铁的连续测定,结果令人满意。In the paper, a continuous titration method for the determination of manganese and iron in center manganese mine by EDTA was studied .In the medium of hexamethylene-tetramine-hydrochlorie acid at pH 5.4 for Cu-EDTA-l-（2-pyridylazo）-2-naphthol-6-sulphonic acid as the mixed indicator and HAc-NaAc buffer solution at Ph 5.0 for PAN-6S as indicator, the titration end points for both manganese and iron were sharp. The amounts of manganese and iron did not interfere with each other in the suitable concentration range. The method had been used for the determination of manganese and iron in the center manganese mine with satisfactory results.

关 键 词：中锰矿 Cu.EDTA-PAN-6S PAN-6S EDTA络合滴定 连续滴定 

分 类 号：TQ172.621[化学工程—水泥工业] X832.02[化学工程—硅酸盐工业]