【摘要】：多環(huán)芳烴(Polycyclic aromatic hydrocarbons,PAHs)在高壓條件下的物理化學(xué)性質(zhì)的研究對(duì)于探究地球早期有機(jī)物質(zhì)的來(lái)源、生命的起源具有十分重要的意義,同時(shí)對(duì)推動(dòng)超高壓合成技術(shù)的發(fā)展也有一定的積極意義。三維熒光光譜(Three dimensional fluorescence spectrum,3DFS)能夠同時(shí)反應(yīng)熒光強(qiáng)度隨著激發(fā)波長(zhǎng)和發(fā)射波長(zhǎng)的變化情況,相對(duì)于二維熒光可以提供多十倍或幾十倍以上的數(shù)據(jù),這對(duì)于分析熒光光譜的細(xì)微變化有重大意義。本文利用3DFS研究了PAHs的高壓熒光性質(zhì)。本文對(duì)處于室溫下、壓力范圍為0.1-60 MPa、濃度為10-6 mol L-1,10-5 mol L-1,和10-4 mol L-1的6種單一多環(huán)芳烴(萘、芴、菲、苊、熒蒽、蒽)的3DFS進(jìn)行了研究。根據(jù)得到的常壓下3DFS發(fā)現(xiàn),所選取的6個(gè)多環(huán)芳烴的特征峰數(shù)量有很大的差別,從2個(gè)(萘)到12個(gè)(蒽)不等。本實(shí)驗(yàn)通過分析在不同壓力下各個(gè)多環(huán)芳烴的熒光峰位置和峰強(qiáng)度來(lái)探討壓力對(duì)熒光光譜的影響。結(jié)果顯示,隨著壓力的不斷升高,6種多環(huán)芳烴的熒光峰位置并沒有發(fā)生改變,但是熒光強(qiáng)度發(fā)生了巨大的變化,并且熒光強(qiáng)度隨壓力的增加或減小隨著被測(cè)熒光物質(zhì)的改變有巨大的差別,同時(shí)發(fā)現(xiàn)熒光物質(zhì)的濃度變化也會(huì)對(duì)實(shí)驗(yàn)結(jié)果產(chǎn)生顯著的影響,濃度的增加加劇了壓力對(duì)熒光光譜的影響。本文還對(duì)處于常溫、壓力范圍為0.1-60 MPa、濃度比為1:1的蒽-芴、蒽-萘、蒽-菲、蒽-苊、蒽-熒蒽、萘-芴、萘-菲、萘-苊、萘-熒蒽、芴-菲、芴-苊、芴-熒蒽、菲-苊、菲-熒蒽、苊-熒蒽的二元混合溶液的3DFS進(jìn)行了測(cè)定。實(shí)驗(yàn)結(jié)果顯示,在常壓下,第二種PAHs的加入對(duì)原PAHs的熒光峰峰位置沒有影響,隨著壓力的上升,PAHs二元混合溶液中2個(gè)組分的熒光峰峰位置都沒有漂移,但是壓力的增加對(duì)PAHs二元混合溶液中2個(gè)組分的特征峰熒光強(qiáng)度產(chǎn)生了顯著影響,并且與該P(yáng)AHs二元混合溶液中2個(gè)組分單獨(dú)存在時(shí)的特征峰熒光強(qiáng)度-壓力變化曲線不同。
[Abstract]:The study of the physicochemical properties of polycyclic aromatic hydrocarbons (Polycyclic aromatic hydrocarbons,PAHs) under high pressure is of great significance for exploring the origin of early organic substances and the origin of life. At the same time, it has some positive significance to promote the development of ultra-high pressure synthesis technology. Three-dimensional fluorescence spectrum (Three dimensional fluorescence spectrum,3DFS) can reflect the change of fluorescence intensity with excitation wavelength and emission wavelength at the same time, and can provide more than ten or more times more data than two-dimensional fluorescence. This is of great significance to the analysis of subtle changes in fluorescence spectra. In this paper, the high pressure fluorescence properties of PAHs have been studied by 3DFS. The 3DFS of six single polycyclic aromatic hydrocarbons (naphthalene, fluorene, phenanthrene, acenaphthene, fluoranthene, anthracene) in the pressure range of 0.1 脳 60 MPa, 10 ~ 5 mol / L, and 10 ~ 4 mol / L ~ (1) have been studied at room temperature. According to the obtained 3DFS at atmospheric pressure, it was found that the number of characteristic peaks of the six polycyclic aromatic hydrocarbons (PAHs) selected varied greatly from 2 (naphthalene) to 12 (anthracene). The effect of pressure on fluorescence spectra was investigated by analyzing the position and intensity of fluorescence peaks of polycyclic aromatic hydrocarbons under different pressures. The results showed that the fluorescence peaks of the six PAHs did not change with the increasing pressure, but the fluorescence intensity changed greatly. With the increase or decrease of the pressure, the fluorescence intensity has great difference with the change of the measured fluorescent substance, and it is found that the concentration change of the fluorescent substance will also have a significant effect on the experimental results. The effect of pressure on fluorescence spectrum was increased with the increase of concentration. For anthracene-fluorene, anthracene-naphthalene, anthracene-phenanthrene, anthracene-fluoranthene, naphthalene-fluorene, naphthalene-phenanthrene, naphthalene-acenaphthene, naphthalene-fluoranthene, fluorene-phenanthrene, fluorene-acenaphthene, naphthene-fluoranthene, fluorene-acenaphthene, The 3DFS of fluorene-fluoranthene, phenanthrene-acenaphthene, phenanthrene-fluoranthene and acenaphthene-fluoranthene was determined by 3DFS. The experimental results show that the addition of the second PAHs has no effect on the position of the fluorescence peak of the original PAHs under atmospheric pressure. With the increase of the pressure, the fluorescence peaks of the two components in the binary mixed solution of PAHs do not drift, and there is no change in the fluorescence peak position of the two components in the binary mixed solution of PAHs. However, the fluorescence intensity of the characteristic peaks of the two components in the binary mixed solution of PAHs was significantly influenced by the increase of pressure, and the fluorescence intensity-pressure curves of the characteristic peaks were different from those of the two components in the binary mixed solution of PAHs.
【學(xué)位授予單位】：浙江工業(yè)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;O625.15

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 袁園;蔣春躍;潘浩宇;;酪氨酸高壓在線三維熒光光譜研究[J];井岡山大學(xué)學(xué)報(bào)(自然科學(xué)版);2012年04期

2 傅平青,劉叢強(qiáng),尹祚瑩,吳豐昌;腐殖酸三維熒光光譜特性研究[J];地球化學(xué);2004年03期

3 李宏斌;劉文清;張玉鈞;丁志群;趙南京;陳東;劉建國(guó);;三維熒光光譜技術(shù)在水監(jiān)測(cè)中的應(yīng)用[J];光學(xué)技術(shù);2006年01期

4 王志剛;劉文清;張玉鈞;李宏斌;趙南京;劉建國(guó);司馬偉昌;楊立書;;不同來(lái)源水體有機(jī)綜合污染指標(biāo)的三維熒光光譜法與傳統(tǒng)方法測(cè)量的對(duì)比研究[J];光譜學(xué)與光譜分析;2007年12期

5 王志剛;劉文清;張玉鈞;殷高方;劉建國(guó);;三維熒光光譜法分類測(cè)量水體浮游植物濃度[J];中國(guó)環(huán)境科學(xué);2008年02期

6 金丹;張玉鈞;李國(guó)剛;肖雪;王志剛;殷高方;劉文清;;菲的三維熒光光譜特性研究[J];光譜學(xué)與光譜分析;2009年05期

7 劉璐;;微生物代謝產(chǎn)物的三維熒光光譜分析[J];化學(xué)工程與裝備;2010年02期

8 于海斌;王業(yè)耀;宋存義;;三維熒光光譜法測(cè)定水中氯苯的研究[J];光譜學(xué)與光譜分析;2011年07期

9 黃文丹;周立e，

本文編號(hào)：2433204