潘立剛
摘 要:該研究以XRF便攜式X射線土壤重金屬測(cè)定儀Ⅱ代機(jī)的性能提高為目標(biāo),在不大幅增加儀器成本的前提下,開(kāi)展基于信息化技術(shù)的硬件集成和軟件開(kāi)發(fā),開(kāi)展基于信號(hào)響應(yīng)強(qiáng)度的定量模型研究、基于土壤理化性狀的定量干擾因素研究和儀器應(yīng)用示范等4個(gè)方面的研發(fā)工作。在硬件結(jié)構(gòu)上加入便攜式微處理電腦(PDA)和全球衛(wèi)星定位接收器(GPS),在X射線熒光分析儀應(yīng)用軟件上加入位置搜索功能,在分析結(jié)果報(bào)表中由軟件自動(dòng)加入測(cè)試樣品所在地的精確地理位置信息。集成以上單元后,使儀器具備了測(cè)試數(shù)據(jù)與同時(shí)記錄采樣地點(diǎn)精確信息相融合的新功能。采用B/S結(jié)構(gòu),應(yīng)用地理信息系統(tǒng)技術(shù)和網(wǎng)絡(luò)應(yīng)用程序開(kāi)發(fā)技術(shù),開(kāi)發(fā)了儀器上位機(jī)管理軟件《基于WebGIS的農(nóng)田環(huán)境監(jiān)測(cè)分析系統(tǒng)》,實(shí)現(xiàn)了對(duì)儀器采集數(shù)據(jù)進(jìn)行管理和分析。軟件包含數(shù)據(jù)瀏覽、數(shù)據(jù)管理、統(tǒng)計(jì)分析、插值分析、動(dòng)態(tài)對(duì)比、空間決策、污染評(píng)價(jià)、標(biāo)準(zhǔn)查詢和用戶權(quán)限等功能。在定量與校正模型研究方面,明確了土壤種類(lèi)、土壤粒徑、土壤含水量等主要影響因子,建立了土壤含水量校正模型和不同土壤種類(lèi)定量模型,使儀器性能得到提升。在儀器應(yīng)用驗(yàn)證方面,主要開(kāi)展了土壤樣本中有機(jī)質(zhì)干擾物靜電吸附去除方法和儀器操作規(guī)程編制。
Abstract:This study devoted on improving the performance of the Portable X-ray Fluorescence Detector for Soil Heavy Metal (XRF Detector). On the premise of not significantly increase the cost, hardware integration and software development based on the information technologies were provided, include new hardware implant, quantitative model, correction model, impact of soil physical and chemical properties, and the instrument performance in application. Personal Digital Assistant (PDA) and Global Position System (GPS) were implanted into the XRF Detector, in order to gain the new function of test data combining sampling location. Adopted B/S (Browser/Server) structure, the monitoring and analysis management system of farm land environment was developed. The function of the management system included data management,statistical analysis, interpolation analysis, dynamic contrast, spatial decision, pollution evaluation,standard query and user privileges.In quantitative and correction model research, main influence factors were proved, such as soil types,soil particle size distribution and soil water content.
Key Words:Soil Heavy Metal;X-ray Fluorescence;Quantitative Model;Correction Model
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