固相微萃取吸附水中有機(jī)污染物的研究

化工論文編號:HG197  論文字?jǐn)?shù):8831,頁數(shù):22

目  錄
中文摘要 I
英文摘要 II
目錄 III
1. 緒論 1
 1.1 固相微萃取技術(shù) 1
 1.1.1 裝置和使用模式 2
 1.1.2 萃取理論 3
 1.1.3 萃取介質(zhì) 3
 1.1.4 SPME在揮發(fā)有機(jī)物分析中的應(yīng)用研究進(jìn)展 4
 1.2 水中有機(jī)污染物的危害 6
 1.2.1 苯酚 6
 1.2.2 硝基苯 7
2. 實(shí)驗(yàn)部分 8
 2.1 主要試劑、材料、儀器 8
 2.1.1 主要試劑、材料 8
 2.1.2 主要儀器 8
 2.1.3 氣相色譜條件 8
 2.2 實(shí)驗(yàn)方法與步驟 8
 2.2.1 儲備液的配制 8
 2.2.2 實(shí)驗(yàn)裝置 9
 2.2.3 實(shí)驗(yàn)操作 9
3. 結(jié)果與討論 11
 3.1 不同電壓、吸附時(shí)間對石英纖維吸附苯酚的影響 11
 3.2 不同電壓、吸附時(shí)間對石英纖維吸附硝基苯的影響 12
 3.3 石英纖維對苯酚的吸附實(shí)驗(yàn) 13
 3.4 石英纖維對硝基苯的吸附實(shí)驗(yàn) 14
4．總結(jié)與展望 15
 4.1 結(jié)論 15
 4.2 存在的不足與建議 15
致謝 16
參考文獻(xiàn) 17

摘  要：本論文采用固相微萃取-氣相色譜法研究石英纖維對水中有機(jī)物吸附的行為，以及不同吸附時(shí)間、電壓、電解質(zhì)濃度、有機(jī)物濃度等不同參數(shù)對吸附的影響。實(shí)驗(yàn)結(jié)果表明：對硝基苯、苯酚，石英纖維吸附的能力不同，石英纖維對硝基苯的吸附較苯酚強(qiáng)。但石英纖維對兩種有機(jī)物的吸附量隨著目標(biāo)有機(jī)物濃度的增加而增加。在不同的電壓下，石英纖維對有機(jī)物的吸附量隨著時(shí)間的增加而增加。固相微萃取技術(shù)在國內(nèi)尤其是環(huán)境監(jiān)測中沒有很好的普及，但固相微萃取技術(shù)在水質(zhì)檢測中方法便捷、快速，可以實(shí)行現(xiàn)場檢測，具有很好的應(yīng)用前景。
關(guān)鍵詞：石英纖維；固相微萃取；氣相色譜

Abstract: In this artical, the equipment of solid phase micro—extraction was used to adsorb the organic contaminants in the water. And the adsorb time、voltage、electrolyte solution、organic concentration were considered to discuss whether they got the influence to the adsorbtion。According to the results, the phenol and the nitrobenzene were absorbed differently. The  nitrobenzene was absorbed much better by the quartz fiber. The absorbtion of the quartz fiber increased with the increase of the organic concentration. Under the different voltage, the absorbtion of the quartz fiber increased with the increase of time.
SPME wasn’t used widely in China,especially in the area of environment monitoring. But it can be used very conveniently and quickly in the water testing, and also be used in the working field.So the prospect of SPME will be fantastic!
Keywords: quartz fiber;Solid-Phase Microextraction;gas chromatography