大学化学 >> 2019, Vol. 34 >> Issue (9): 101-105.doi: 10.3866/PKU.DXHX201903034

化学实验 上一篇    下一篇

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

田笑丛,芦昌盛,王凤彬,刘斌,马海凤,王庆*()   

  • 收稿日期:2019-03-31 录用日期:2019-05-15 发布日期:2019-06-12
  • 通讯作者: 王庆 E-mail:wangqing@nju.edu.cn
  • 基金资助:
    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)

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

Xiaocong TIAN,Changsheng LU,Fengbin WANG,Bin LIU,Haifeng MA,Qing WANG*()   

  • Received:2019-03-31 Accepted:2019-05-15 Published:2019-06-12
  • Contact: Qing WANG E-mail:wangqing@nju.edu.cn
  • Supported by:
    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)

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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。

关键词: 大学化学实验, 重金属, 试剂再利用

Abstract:

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.

Key words: General chemistry experiment, Heavy metal, Recycling of reagents