水环境重金属铜离子光学检测仪器的设计

针对水质污染中的重金属污染设计了一种自动化检测仪器,能够特异性检测水环境中重金属铜离子.仪器采用光学方法进行检测,具有检测速度快,操作简单,重复性好等优点.仪器能够自动控制水路实现了溶液进样自动化,同时设计了水路闭环检测模块,实现了精确进样以及故障检测.仪器能够自动调节激光器光强适应于不同浓度样品的检测.实际检测结果表明本仪器检出限达到0.006 mg/L,在0.1 mg/L到2.00 mg/L具有良好的线性度,检测准确度小于6.4%,精密度小于4.52%.

Design of an Optical Instrument for Copper Ion Detection in Water Environment

An automated instrument was designed for heavy metal determination due to severe heavy metal contami-nation in water environment. The instrument can be used to specifically detect copper ion in water based on spectro-photometry. The instrument has the advantages of fast detection,simple operation and good repeatability,etc. Be-sides,specific fluid module was designed to implement auto-sampling during the detection. The waterway closed-loop detection module was also designed to achieve precise injection and error warning. In samples with different concentration,the instrument can adjust the laser intensity automatically based on the response of different sam-ples. The experiment result shows that the detection limit of the instrument is 0.006 mg/L,with good linearity in the range from 0.1 mg/L to 2.00 mg/L. Extraordinary performance was also obtained with both good accuracy less than 6.4%and precision less than 4.52%.