基于PEDD的便携式亚硝酸盐检测仪  

Portable Nitrite Detector Based on PEDD

作　　者：黄利强[1] HUANG Li-qiang(Fisheries College,Jimei University,Water Environment and Fishery Resources Monitoring Center,Jimei University,Fujian Xiamen 361021,China)

机构地区：[1]集美大学水产学院,集美大学水域环境与渔业资源监测中心,福建厦门361021

出　　处：《广州化工》2022年第18期98-100,112,共4页GuangZhou Chemical Industry

基　　金：福建省自然科学基金项目(No:2022J01802)。

摘　　要：设计和制作了一款基于发光二极管对(paired emitter-detector diode,PEDD)的简易便携式亚硝酸盐检测仪,具有制作简单、成本低廉、迷你便携、使用方便的特点。检测仪使用主波长分别为530/600 nm的2个发光二极管作为光源和检测器,LM358进行信号处理,数字电压表直接显示水中亚硝酸盐的浓度值。使用自制的检测仪对亚硝酸盐水样进行了测试,测定结果与721分光光度计无显著差异,具有良好的线性度和准确度。A simple and portable nitrite detector based on paired emitter detector diode(PEDD) was designed and manufactured.It had the characteristics of simple manufacture,low cost,mini portability and convenient use.Two LEDs with main wavelengths of 530/600 nm were used respectively as light source and detector.A LM358 performed signal processing,and a digital voltmeter was used to display the concentration of nitrite directly.Nitrite water samples were tested using this self-made detector,results showed that there was no significant difference between it and 721 spectrophotometer,and it had the advantages of good linearity and accuracy.

关 键 词：亚硝酸盐 发光二极管 检测仪 

分 类 号：O657.3[理学—分析化学]