摘要
针对蔬菜基地存在的重金属污染,研制了一种重金属离子浓度检测仪.该检测仪运用离子选择电极和温度补偿原理,给出土壤重金属离子浓度的测量.进一步,基于STC89C52单片机和ICL7650运放器,设计了硬件检测电路和检测程序,实现了对离子浓度的测量、显示、存储、曲线绘制以及结果打印等操作.最后,通过对Cu+离子溶液的试验验证了该检测仪的精确性.由于该检测仪在相同的硬件条件下只需要更换相应的离子电极即可实现对不同重金属离子的浓度检测,因此具有良好的应用前景.
A detector of heavy metal ion concentrations is developed for vegetable base with heavy metal pollution.Base on the ion-selective electrode and the temperature compensation principle,heavy metal ion concentrations in soil are measured by the detector.Moreover,the hardware detecting circuits and detecting program are designed based on the STC89C52 SCM and the ICL7650 integrated amplifier.The ion concentrations can be detected,displayed,saved,drawed as curves and printed.Finally,the experiment of Cu＋ ion solution verifies the accuracy of the detector.Since the detector can detect different heavy metal ion concentration through changing the corresponding ion electrode under the same hardware condition,the detector has a good prospect.
出处
《浙江工业大学学报》
CAS
2012年第2期205-208,共4页
Journal of Zhejiang University of Technology
基金
国家自然科学基金资助项目(60901081)
国家大学生创新性实验计划资助项目(091033710)
关键词
蔬菜基地
重金属离子
离子选择电极
在线检测
vegetable base
heavy metal ion
ion selective electrode
on-line detection
