發(fā)布時(shí)間：2018-11-01 15:11

【摘要】：海洋中的硝酸鹽濃度是海洋環(huán)境檢測(cè)時(shí)的重要參數(shù),獲取海水中硝酸鹽的時(shí)空分布數(shù)據(jù)對(duì)海洋生態(tài)系統(tǒng)研究、海洋水質(zhì)評(píng)估等具有非常重要的意義。國(guó)內(nèi)的海洋硝酸鹽檢測(cè)主要依靠人工采樣到實(shí)驗(yàn)室進(jìn)行實(shí)驗(yàn),達(dá)不到原位檢測(cè)的需求；而購買國(guó)外的原位檢測(cè)儀器需要花費(fèi)大量財(cái)力,且儀器維護(hù)不方便。因此研制出具有我國(guó)自主知識(shí)產(chǎn)權(quán)的高精度、低功耗、高穩(wěn)定性的原位硝酸鹽檢測(cè)儀器具有重要的意義。 本論文在分析了國(guó)內(nèi)外先進(jìn)的硝酸鹽檢測(cè)儀器技術(shù)發(fā)展現(xiàn)狀的基礎(chǔ)上,綜合運(yùn)用光學(xué)、物理學(xué)、機(jī)械學(xué)、電子學(xué)以及計(jì)算機(jī)科學(xué)技術(shù)等各個(gè)學(xué)科知識(shí),基于紫外分光光度法檢測(cè)方法進(jìn)行原位檢測(cè)儀器的設(shè)計(jì),包括機(jī)械光路、電子電路、算法以及軟件界面,自主研制出基于紫外分光光度法的精度高、功耗低、穩(wěn)定性好的硝酸鹽原位檢測(cè)裝置。 實(shí)驗(yàn)結(jié)果表明：海洋硝酸鹽原位檢測(cè)儀器的檢測(cè)精度可達(dá)0.5μmol/1；線性度高達(dá)0.9988,檢測(cè)線性范圍為1-320μmol/1；穩(wěn)定性好,均方差為0.009551。該系統(tǒng)具有很好的性能,達(dá)到同類硝酸鹽原位檢測(cè)儀的國(guó)際水平。 本論文一共六章： 第一章首先闡述了論文的研究背景以及意義,介紹了硝酸鹽的常用檢測(cè)方法,以及運(yùn)用于水體的硝酸鹽檢測(cè)方法,最后提出了一套基于紫外分光光度法的海洋硝酸鹽原位檢測(cè)方案。 第二章介紹了紫外分光光度法進(jìn)行物質(zhì)的光譜分析的原理,以及常見海洋物質(zhì)的紫外光譜。 第三章介紹了海洋硝酸鹽原位檢測(cè)系統(tǒng)的設(shè)計(jì),包括系統(tǒng)總設(shè)計(jì)、機(jī)械設(shè)計(jì)、硬件設(shè)計(jì)等。 第四章介紹了海洋硝酸鹽原位檢測(cè)系統(tǒng)軟件的設(shè)計(jì),包括軟件需求說明、系統(tǒng)軟件設(shè)計(jì)、界面設(shè)計(jì)、通訊設(shè)計(jì)、數(shù)據(jù)的算法設(shè)計(jì)等。 第五章介紹了實(shí)驗(yàn)設(shè)計(jì)部分,以及實(shí)驗(yàn)結(jié)果分析等。 第六章是總結(jié)與展望。
[Abstract]:The concentration of nitrate in the ocean is an important parameter in the detection of marine environment. It is very important to obtain the temporal and spatial distribution data of nitrate in sea water for the study of marine ecosystem and the evaluation of marine water quality. In China, the detection of marine nitrate mainly depends on manual sampling to the laboratory for experiments, which can not meet the demand of in-situ detection, but it takes a lot of money to purchase foreign in-situ detection instruments, and the maintenance of the instruments is not convenient. Therefore, it is of great significance to develop a high precision, low power consumption and high stability in situ nitrate detection instrument with independent intellectual property rights in China. On the basis of analyzing the development of advanced nitrate detection instruments at home and abroad, this paper synthetically applies the knowledge of optics, physics, mechanics, electronics and computer science and technology, etc. The design of in situ detection instrument based on ultraviolet spectrophotometry, including mechanical optical circuit, electronic circuit, algorithm and software interface, has been developed with high precision and low power consumption. A stable in-situ nitrate detection device. The experimental results show that the detection accuracy of the marine nitrate in situ detection instrument is as high as 0. 9988 渭 mol/1;, the linear range of detection is 1-320 渭 mol/1; and the mean square deviation is 0. 009551. The system has good performance and reaches the international level of the same kind of nitrate in situ detector. There are six chapters in this paper: the first chapter describes the research background and significance of the thesis, introduces the common detection methods of nitrate, and the nitrate detection method used in water body. Finally, a set of marine nitrate in situ detection scheme based on ultraviolet spectrophotometry is proposed. In the second chapter, the principle of ultraviolet spectrophotometry and the ultraviolet spectrum of common marine substances are introduced. The third chapter introduces the design of marine nitrate in situ detection system, including system design, mechanical design, hardware design and so on. The fourth chapter introduces the software design of marine nitrate in-situ detection system, including software requirement description, system software design, interface design, communication design, data algorithm design and so on. The fifth chapter introduces the design of the experiment and the analysis of the experimental results. The sixth chapter is the summary and prospect.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TH766.5

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