重金属化学试剂的回收再利用——以“三氯化六氨合钴实验”为例  

Recycle of Heavy Metal Chemical Reagents: A Case Study of “Preparation and Analyses of Complex [Co（NH3）6]Cl3”

作　　者：田笑丛 芦昌盛[1] 王凤彬[1] 刘斌[1] 马海凤 王庆[1] TIAN Xiaocong;LU Changsheng;WANG Fengbin;LIU Bin;MA Haifeng;WANG Qing(National Demonstration Center for Experimental Chemistry Education(Nanjing University),School of Chemistry&Chemical Engineering,Nanjing University,Nanjing 210023,P.R.China)

机构地区：[1]南京大学化学化工学院化学国家级实验教学示范中心(南京大学)

出　　处：《大学化学》2019年第9期101-105,共5页University Chemistry

基　　金：国家基金委基础科学人才培养基金条件建设项目(J1210030);南京大学“十三五”实验教学改革研究课题(SY201703)

摘　　要：在三氯化六氨合钴制备和化学分析的原有实验基础上,我们设计了钴和银的回收再利用实验。钴和银都是重金属,对环境有污染;设计实验从产物三氯化六氨合钴中回收氯化钴,从化学分析氯含量实验产生的废弃物中回收硝酸银,最终实现重金属化学试剂的回收再利用。该实验设计有助于提高学生实验探究兴趣,降低实验室成本,以及通过实践增强学生的环保意识。A new experiment,Recycle of cobalt and silver,has been designed,based on the original experiment“Preparation and analyses of complex[Co(NH3)6]Cl3”.Both cobalt and silver are heavy metals,which can cause serious environmental pollution.In our experiments,cobalt chloride was recovered from the product[Co(NH3)6]Cl3,and silver nitrate was extracted from the byproduct in the process of chlorine content determination.Therefore,both the above-mentioned heavy metals can be recycled.Our experimental design has been proved to be able to promote studying interests of students,enhance environmental awareness of students,and in the meantime reduce experimental costs.

关 键 词：大学化学实验 重金属 试剂再利用 

分 类 号：G64[文化科学—高等教育学] O6[文化科学—教育学]