本文選題：水污染 + 重金屬�。� 參考：《農(nóng)業(yè)工程學(xué)報》2017年S1期

【摘要】：該研究以水環(huán)境中重金屬鉛離子(Pb2+)為研究對象,簡化現(xiàn)有的Pb2+比色體系,基于比色法和光譜法,開發(fā)了一款用于Pb2+快速檢測的便攜式測定儀。該研究簡化了繁瑣復(fù)雜的前期處理,完成了比色試驗。該測定儀主要分為光路模塊與電路模塊,光路模塊將鉛離子的濃度轉(zhuǎn)化為光信號,電路模塊實現(xiàn)了光信號的轉(zhuǎn)換、放大、數(shù)據(jù)處理以及查看管理數(shù)據(jù)、上傳數(shù)據(jù)等功能。檢測儀完成后,對其進行了若干項系統(tǒng)性能分析,采取了低功耗、抗干擾以及重復(fù)性測試,以驗證測量的精確度。試驗結(jié)果表明:經(jīng)比色反應(yīng)的建模集中預(yù)測值與化學(xué)值的決定系數(shù)R2=0.934,檢測線性范圍0.01~0.2 mg/L,鉛含量指標(biāo)變異系數(shù)低于1.0%,測試結(jié)果表明該測定儀具有良好的準確度與重復(fù)性。
[Abstract]:In this study, lead ion (PB2) in water environment was used as the research object, and the existing PB2 colorimetric system was simplified. Based on colorimetric method and spectral method, a portable detector for rapid detection of PB2 was developed. This study simplifies the complicated preliminary treatment and completes the colorimetric test. The instrument is mainly divided into optical path module and circuit module. The optical path module converts the concentration of lead ion into optical signal. The circuit module realizes the functions of optical signal conversion, amplification, data processing, viewing and management data, uploading data and so on. After the instrument is finished, the system performance is analyzed, and low power consumption, anti-interference and repeatability are adopted to verify the accuracy of the measurement. The experimental results show that the determination coefficient of the predicted value and chemical value is 0.934, the linear range is 0.01 ~ 0.2 mg / L, and the coefficient of variation of lead content index is less than 1.0%. The test results show that the instrument has good accuracy and repeatability.
【作者單位】： 中國農(nóng)業(yè)大學(xué)信息與電氣工程學(xué)院;農(nóng)業(yè)部農(nóng)業(yè)信息獲取技術(shù)重點實驗室;北京農(nóng)業(yè)物聯(lián)網(wǎng)工程技術(shù)研究中心;
【基金】：國家國際科技合作專項項目(2014ZZCX0710) 國家重點研發(fā)計劃項目(2016YFD0800900)
【分類號】：X85

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本文編號：2079260