本文關(guān)鍵詞：實(shí)驗(yàn)室模擬大氣中醛類與硫酸銨及胺類的液相反應(yīng)研究　出處：《山東大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 二次有機(jī)氣溶膠 乙醇醛 苯甲醛 異丁烯醛 硫酸銨

【摘要】：大氣中氣溶膠根據(jù)來(lái)源分為一次氣溶膠和二次氣溶膠。大氣中揮發(fā)性有機(jī)物可以通過(guò)氣相反應(yīng)或者云霧水及顆粒物的液相反應(yīng)形成二次有機(jī)氣溶膠。實(shí)驗(yàn)選取乙醇醛、苯甲醛及異丁烯醛作為研究對(duì)象,分別模擬研究云水或顆粒相中與硫酸銨、甲胺及甘氨酸的液相反應(yīng)。乙醇醛、苯甲醛及異丁烯醛是大氣中揮發(fā)性有機(jī)物(異戊二烯、甲苯等)光氧化反應(yīng)的重要產(chǎn)物。硫酸銨是大氣環(huán)境中含量較大且化學(xué)性質(zhì)穩(wěn)定的無(wú)機(jī)鹽。甘氨酸是大氣氣溶膠中含量最多的游離氨基酸。烷基胺是大氣中較為普遍的含氮化合物,甲胺是其中最簡(jiǎn)單的有機(jī)含氮化合物。研究乙醇醛、苯甲醛及異丁烯醛與硫酸銨、甲胺及甘氨酸液相反應(yīng)產(chǎn)生二次有機(jī)氣溶膠,一方面可以進(jìn)一步完善液相反應(yīng)生成二次有機(jī)氣溶膠過(guò)程的相關(guān)內(nèi)容,另一方面可以加深對(duì)反應(yīng)產(chǎn)物的形成過(guò)程及產(chǎn)物的光學(xué)性質(zhì)的理解,對(duì)于預(yù)測(cè)大氣環(huán)境中的二次有機(jī)氣溶膠的液相形成及研究其對(duì)能見(jiàn)度及氣候影響具有重要意義。本研究的主要內(nèi)容為：模擬大氣云水或顆粒相中乙醇醛、苯甲醛及異丁烯醛分別與硫酸銨、甲胺及甘氨酸反應(yīng)產(chǎn)生二次有機(jī)氣溶膠的過(guò)程及產(chǎn)物的光學(xué)性質(zhì)。具體包括：(1)研究不同濃度乙醇醛與硫酸銨、甲胺和甘氨酸的反應(yīng),通過(guò)紫外-可見(jiàn)吸收譜研究產(chǎn)物的光學(xué)性質(zhì),通過(guò)質(zhì)譜分析可能的產(chǎn)物。此外,為了研究硫酸銨、甲胺及甘氨酸之間的相互影響,研究了硫酸銨、甲胺及甘氨酸混合后與乙醇醛的反應(yīng)。(2)研究苯甲醛與硫酸銨、甲胺及甘氨酸的反應(yīng)。(3)研究異丁烯醛與硫酸銨、甲胺及甘氨酸的反應(yīng)。結(jié)果表明,相同濃度下乙醇醛與甘氨酸反應(yīng)產(chǎn)生吸光產(chǎn)物的速度最快,且量最大,甲胺次之,硫酸銨最慢,其中主要發(fā)生醇醛縮合、縮醛及生成亞胺反應(yīng)。苯甲醛可以與硫酸銨、甲胺及甘氨酸發(fā)生反應(yīng),但反應(yīng)速度較慢,對(duì)二次有機(jī)氣溶膠的貢獻(xiàn)較小。異丁烯醛與硫酸銨、甲胺沒(méi)有反應(yīng),與甘氨酸的反應(yīng)較為緩慢,對(duì)二次有機(jī)氣溶膠的形成貢獻(xiàn)很小。
[Abstract]:Aerosols in the atmosphere can be divided into primary aerosol and secondary aerosol according to their source. Volatile organic compounds in the atmosphere can be formed by aerosol reaction or liquid phase reaction of cloud water and particulate matter. Aldehydes. Benzaldehyde and isobutenaldehyde were used to simulate the liquid phase reaction of ammonium sulfate, methylamine and glycine in cloud water or granular phase. Benzaldehyde and isobutenaldehyde are volatile organic compounds (isoprene) in the atmosphere. Toluene et al.). Ammonium sulfate is an inorganic salt with high content and stable chemical properties in the atmospheric environment. Glycine is the most abundant free amino acid in atmospheric aerosol. Alkylamine is the most common amino acid in the atmosphere. Nitrogen compounds. Methylamine is the simplest organic nitrogen-containing compound. The secondary organic aerosol was produced by the reaction of ethanol aldehyde, benzaldehyde and isobutenal with ammonium sulfate, methylamine and glycine in liquid phase. On the one hand, it can further improve the content of the formation of secondary organic aerosol from liquid phase reaction, on the other hand, it can deepen the understanding of the formation process of the reaction products and the optical properties of the products. It is of great significance to predict the formation of secondary organic aerosols in the atmosphere and to study their effects on visibility and climate. The main contents of this study are as follows: modeling glycolaldehyde in cloud water or granular phase. The reaction of benzaldehyde and isobutenaldehyde with ammonium sulfate, methylamine and glycine to produce secondary organic aerosol and the optical properties of the product were studied. The reaction of methylamine with glycine was studied by UV-Vis absorption spectroscopy, and the possible products were analyzed by mass spectrometry. In addition, the interaction among ammonium sulfate, methylamine and glycine was studied. The reaction of ammonium sulfate, methylamine and glycine with ethanol aldehydes was studied. The reaction of benzaldehyde with ammonium sulfate, methylamine and glycine was studied. The reaction of methylamine and glycine. The results showed that the reaction of glycine with glycine at the same concentration had the fastest rate and the largest amount, followed by methylamine and ammonium sulfate, among which the condensation of alcohol and aldehydes occurred mainly. Benzaldehyde can react with ammonium sulfate, methylamine and glycine, but the reaction rate is slower and the contribution to secondary organic aerosol is small. Isobutenal has no reaction with ammonium sulfate and methylamine. The reaction with glycine is slow and has little contribution to the formation of secondary organic aerosols.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X513

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 金山;大力開(kāi)發(fā)高純異丁烯的應(yīng)用[J];上�；�;2003年05期

2 王敏;異丁烯應(yīng)用開(kāi)發(fā)值得重視[J];上�；�;2004年12期

3 王玉芝;彭剛;;異丁烯應(yīng)用開(kāi)發(fā)值得重視[J];精細(xì)與專用化學(xué)品;1992年04期

4 王玉芝,彭剛,曹成才;異丁烯的開(kāi)發(fā)和應(yīng)用[J];湖北化工;1992年02期

5 韓秀山;;應(yīng)大力開(kāi)發(fā)高純異丁烯的應(yīng)用[J];化工文摘;2003年05期

6 王q，

本文編號(hào)：1376515