Research and Application of Handheld Colorimetric System for Diffuse Transmission Water Quality Detection Tube Based on Android Phone
In order to meet the needs of on-site rapid monitoring,this article has developed a handheld colorimetric system for diffuse transmission water quality detection tube based on Android mobile phones.It adopts a reliable light source and optical path design,and uses 3 D printing technology to create accessories that are compatible with the mobile phone,achie-ving accurate and fast machine reading of the measurement results of the plastic sealed extrusion suction water quality detec-tion tube.The system can automatically select the response value calculation mathematics mathematical model for different test items to obtain the working curve of the best linear relationship.Validation experiments were conducted using ammonia nitrogen standard substances and environmental samples.The linear correlation coefficient of the work curve was 0.9991.Seven repeated measurements were performed on a 0.50 mg·L-1 standard sample,with a relative standard deviation of 2.68％and a detection limit of 0.08 mg·L-1.The recovery rate of industrial wastewater was 99％～100％.Using the same method,experiments were conducted on 7 items including COD,Cr6+,Cu,Fe,Mn,F-,and PO43- simultaneous-ly.The linear correlation coefficients of the work curves of the 7 items were 0.996,0.9998,0.9992,0.9995,0.9974,0.9993,and 0.9992,respectively.This research has high practical value in rapid detection of environmental water quality.
water quality testingdiffuse transmissioncolorimetric analysisintelligent mobile phoneapplication software
万方数据
维普
