本文選題：液體 + 蜂蜜��； 參考：《南京航空航天大學(xué)》2017年碩士論文

【摘要】：液體中組分含量的檢測在實(shí)際應(yīng)用中是一個(gè)急需解決的問題,近年來相關(guān)的研究已經(jīng)成為熱點(diǎn)。復(fù)雜混合溶液成分及其含量的檢測涉及到食品、藥物、農(nóng)業(yè)、環(huán)境等領(lǐng)域,它不僅與相應(yīng)產(chǎn)品的品質(zhì)、生產(chǎn)效率息息相關(guān),而且也關(guān)系到食品安全等重大問題。隨著生活水平和社會(huì)需求的提高,檢測技術(shù)的要求也越來越高,人們希望檢測技術(shù)能夠更為方便、快捷、準(zhǔn)確并且低碳和綠色環(huán)保。液體組分檢測技術(shù)作為新的檢測技術(shù)而日益受到重視,并且逐步拓寬到建筑、結(jié)構(gòu)等諸多應(yīng)用領(lǐng)域。目前,用于檢測混合液體成分濃度的主要方法有密度瓶法、比重法、折光率法、高效液相色譜法、拉曼光譜法等等。密度瓶法由于其對實(shí)驗(yàn)環(huán)境條件要求較高,實(shí)現(xiàn)現(xiàn)場檢測難度較大;比重法儀器簡單,操作方便,但是計(jì)算復(fù)雜,結(jié)果誤差較大;高效液相色譜法測量精度高但是操作不便,成本較高;而拉曼光譜法由于容易受到拉曼散射面積、光學(xué)系統(tǒng)參數(shù)、熒光現(xiàn)象等因素干擾而造成曲線非線性。為此,設(shè)計(jì)和研制一種操作簡便并可用于現(xiàn)場的液體濃度檢測光電系統(tǒng)十分必要。當(dāng)前研究表明,使用熒光法檢測溶液濃度時(shí),在相同溶液厚度情況下,熒光強(qiáng)度與濃度成正比例關(guān)系;而測量其吸光度時(shí),濃度與以10為底電壓倒數(shù)的對數(shù)值成線性關(guān)系,基于此,本研究首先對現(xiàn)階段液體組分的熒光光譜、紫外-可見分光光度檢測技術(shù)與發(fā)展現(xiàn)狀做了概述;其次詳細(xì)闡述了熒光光譜法和紫外-可見分光光度法的原理,基于熒光光譜法,紫外-可見分光光度法設(shè)計(jì)并研制了新型的液體濃度光電檢測系統(tǒng),根據(jù)實(shí)際需要,在樣品池后使用光子計(jì)數(shù)檢測器構(gòu)成檢測熒光系統(tǒng);而采用光敏二極管模塊、數(shù)字式電壓表構(gòu)成測量吸光度系統(tǒng),最后以蜂蜜為對象,進(jìn)行了應(yīng)用研究,驗(yàn)證了該設(shè)計(jì)系統(tǒng)的可行性,設(shè)計(jì)的系統(tǒng)實(shí)現(xiàn)了濃度檢測的目的。論文主要研究內(nèi)容有:(1)通過實(shí)驗(yàn)確定了樣品溶液的最佳激發(fā)波長,分析得到了其濃度與熒光峰值之間的規(guī)律,建立了樣品濃度和熒光峰值之間的數(shù)學(xué)模型,分析實(shí)驗(yàn)結(jié)果得到其相關(guān)系數(shù),說明了本文所設(shè)計(jì)系統(tǒng)的可行性,隨后通過實(shí)驗(yàn)驗(yàn)證了該系統(tǒng)設(shè)計(jì)的合理與有效性。(2)設(shè)計(jì)了基于熒光測量的液體濃度光電檢測系統(tǒng),該系統(tǒng)以紫外LED為光源光子計(jì)數(shù)檢測器為檢測元件,可以通過對液體溶液的熒光檢測實(shí)現(xiàn)液體濃度檢測;還設(shè)計(jì)了基于紫外—可見分光光度法測量液體濃度檢測系統(tǒng),該系統(tǒng)主要由光敏二極管模塊和電壓表構(gòu)成,可通過對液體的吸光度檢測,實(shí)現(xiàn)液體濃度檢測。(3)對設(shè)計(jì)的基于檢測熒光的液體濃度光電檢測系統(tǒng)進(jìn)行調(diào)試,并以蜂蜜為研究對象進(jìn)行應(yīng)用研究,通過實(shí)驗(yàn)測量得到蜂蜜濃度與熒光峰值強(qiáng)度之間的關(guān)系,建立了它們之間的數(shù)學(xué)模型,通過相同實(shí)驗(yàn)條件驗(yàn)證該數(shù)學(xué)模型的合理性,結(jié)果表明相關(guān)系數(shù)為0.94549,實(shí)現(xiàn)了液體濃度檢測的目的;(4)對設(shè)計(jì)的基于吸光度測量液體濃度檢測系統(tǒng),進(jìn)行可行性驗(yàn)證與應(yīng)用研究。測量液體濃度與吸光度之間的關(guān)系,以蜂蜜為樣品建立了其濃度與以10為底電壓倒數(shù)的對數(shù)值的數(shù)學(xué)模型,在相同實(shí)驗(yàn)條件下驗(yàn)證其有效性,相關(guān)系數(shù)為0.98929,結(jié)果表明,該系統(tǒng)用于液體濃度檢測方法有效。本文設(shè)計(jì)的新型的液體濃度光電檢測系統(tǒng),可實(shí)現(xiàn)液體濃度檢測,采用該系統(tǒng)對典型液體-蜂蜜進(jìn)行了應(yīng)用研究,結(jié)果表明,該系統(tǒng)對液體濃度檢測是可行和快速有效的,與已有方法相比,不僅更加方便、快捷、準(zhǔn)確,并且操作簡單,價(jià)格低廉,可以用于現(xiàn)場測量,本文研究為液體濃度檢測與分析提供了新的途徑。
[Abstract]:The determination of component content in liquid is an urgent problem in practical application. In recent years, the related research has become a hot spot. The detection of the composition and content of complex mixed solution involves food, medicine, agriculture, environment and other fields. It is not only related to the quality of the corresponding products, the production efficiency is closely related, but also related to food safety. With the improvement of living standards and social needs, the requirements of testing technology are becoming higher and higher. People hope that detection technology can be more convenient, quick, accurate and low carbon and green. As a new detection technology, liquid component detection technology has been paid more and more attention, and it has gradually widened to building, structure and so on. At present, the main methods used to detect the concentration of mixed liquid components are density bottle method, specific gravity method, refractive index method, high performance liquid chromatography, Raman spectroscopy and so on. The density bottle method is difficult to realize field detection because of its high requirement on the experimental environment, and the weight method is simple and easy to operate, but the calculation is complicated, but the result is complex and the result is complicated. The high performance liquid chromatography (HPLC) has high precision but inconvenient operation and high cost, and Raman spectroscopy is easy to be nonlinear due to the interference of Raman scattering area, optical system parameters, fluorescence phenomena and other factors. Therefore, a kind of photoelectric system which is easy to operate and can be used in the field of liquid concentration detection is designed and developed. It is very necessary. The current study shows that the fluorescence intensity is proportional to the concentration in the same solution thickness when the concentration of the solution is measured by the fluorescence method, and the concentration is linearly related to the value of the inverse of the bottom voltage inversion of 10. Based on this, the fluorescence spectra of the liquid components at the present stage are first studied. The visible spectrophotometric detection technology and the development status are summarized. Secondly, the principle of fluorescence spectrometry and ultraviolet visible spectrophotometry is described in detail. Based on the fluorescence spectrometry and ultraviolet visible spectrophotometry, a new photoelectric detection system for liquid concentration is designed and developed. According to the actual needs, the photon counting detection is used after the sample pool. The measuring apparatus forms the fluorescence system, and the light diode module and the digital voltmeter constitute the measuring absorbance system. Finally, the application research is carried out with honey as the object. The feasibility of the design system is verified. The designed system realizes the purpose of concentration detection. The main contents of the paper are as follows: (1) the sample solution was determined by the experiment. The optimum excitation wavelength of the liquid is obtained. The law between the concentration and the peak value of the fluorescence is obtained. The mathematical model between the concentration of the sample and the peak value of the fluorescence is established. The correlation coefficient is obtained by the analysis of the experimental results. The feasibility of the design of the system is illustrated. Then the design of the system is proved to be reasonable and effective. (2) the design is designed. Based on the fluorescence measurement system of liquid concentration photoelectric detection system, the system uses ultraviolet LED as the light photon counting detector as the detection component, can detect the liquid concentration by the fluorescence detection of liquid solution, and designs a measurement system of liquid concentration based on ultraviolet visible spectrophotometric method. This system is mainly light sensitive diode. The composition of the module and voltmeter can detect the liquid concentration by detecting the absorbance of liquid. (3) debugging the designed photoelectric detection system based on the detection of fluorescence, and using honey as the research object, the relationship between the concentration of honey and the peak intensity of the fluorescence is obtained by experimental measurement, and it has been established. The mathematical model between them verified the rationality of the mathematical model through the same experimental conditions. The results showed that the correlation coefficient was 0.94549, and the purpose of measuring the liquid concentration was realized. (4) the feasibility and application of the designed liquid concentration measurement system based on absorbance measurement. The relationship between liquid concentration and absorbance was measured. The mathematical model of its concentration and the inverse number of 10 as the bottom voltage is set up with honey as the sample. The validity of the model is verified under the same experimental conditions and the correlation coefficient is 0.98929. The result shows that the system is effective for the detection of liquid concentration. The new liquid concentration photoelectric detection system designed in this paper can realize the liquid concentration detection, The application of this system is applied to the typical liquid honey. The results show that the system is feasible, fast and effective for the detection of liquid concentration. Compared with the existing methods, it is not only more convenient, fast and accurate, but also simple in operation and low in price. It can be used in the field measurement. This paper provides a new method for the detection and analysis of liquid concentration. Way.

【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：O657.3;S896.1

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本文編號(hào)：1814135