MA Sheng-qian, ZHOU Rong, CHEN Yan, et al. COD detection based on photometric measurement[J]. 2010, 29(9): 116-118. DOI: 10.13873/j.1000-97872010.09.032.
基于光度测量的COD检测
摘要
本系统以集成电路模块
A/D和AT89C52为核心
利用硅光电池和运放实现光电转换
测量入射和透射光的强度
依据朗伯—比耳比色原理
微控器可自动计算出溶液的化学需氧量(COD)值。系统还具有测试数据的打印
实时时钟
超量程报警等功能。同时系统还提供PC串口通信与数据库管理系统
便于测量结果的保存和分析。
Abstract
This system takes the IC
A/D and AT89C52 as key module
according to Lambert-Bill’s law and colorimetric principle
uses silicon photovoltaic cells and operational amplifier to realize photoelectric conversion.Incident light and transmitted light intensity of liquid are measured.COD of the liquid sample can be automated calculated by microcontroller.Additionally
the system still has the function of print
clock and alarm etc.And the system still offers PC communication and database management subsystem to store and analyze the result of COD measurement.
An automated instrument for monitoring oxygen demand in polluted waters [J] . A.J. Guwy,L.A. Farley,P. Cunnah,F.R. Hawkes,D.L. Hawkes,M. Chase,H. Buckland. Water Research . 1999 (14)