本文選題：多固相共存　切入點：生物膜　出處：《吉林大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：自然水體是一個復(fù)雜的多相共存體系。生物膜、懸浮顆粒物和表層沉積物等固相物質(zhì)是自然水體的重要組成部分,它們參與了自然水體中污染物的遷移轉(zhuǎn)化過程,并在很大程度上決定水體污染物的歸趨。由于污染物在水-固界面的吸附過程通常是影響污染物后續(xù)環(huán)境行為的決定性步驟,長期以來受到了研究人員的廣泛關(guān)注。而已有研究多關(guān)注污染物或共存污染物在單一固相水相體系中的吸附作用,鮮有關(guān)注水中多種固相物質(zhì)間的相互作用對它們吸附各種污染物的影響的研究。共存于同一自然水體中的生物膜、懸浮顆粒物和沉積物能夠進行物質(zhì)交換,通常對各自的組分及結(jié)構(gòu)造成影響甚至實現(xiàn)相互轉(zhuǎn)化。固相物質(zhì)間的相互作用必然會影響到水中污染物的環(huán)境行為。因此,開展固相物質(zhì)間的相互作用及其對水中污染物環(huán)境行為的影響研究有助于深入認識污染物在真實水環(huán)境中的遷移轉(zhuǎn)化行為。本文選擇在水環(huán)境中廣泛被檢出且受到人們廣泛關(guān)注的兩種有機污染物:典型有機氯農(nóng)藥——林丹和喹諾酮類抗生素——環(huán)丙沙星作為目標(biāo)物。通過構(gòu)建生物膜、懸浮顆粒物和表層沉積物三種固相物質(zhì)的不同組合體系,進行不同體系的等溫吸附實驗,分析了不同體系中林丹和環(huán)丙沙星吸附特征的差異;通過熒光光譜等分析手段,分析了固相物質(zhì)組分在多固相共存體系中的變化,初步探討了固相物質(zhì)間的相互作用對它們吸附有機污染物的影響作用機制。結(jié)果表明,單固相體系中固相物質(zhì)對林丹的吸附能力大小順序為:生物膜懸浮顆粒物表層沉積物;等質(zhì)量雙固相體系中固相組合對林丹的吸附能力最強的為生物膜和懸浮顆粒物的組合,其次為生物膜和表層沉積物的組合,表層沉積物和懸浮顆粒物的組合吸附能力最弱。單固相體系對環(huán)丙沙星的吸附能力與其吸附林丹的能力強弱順序相同;等質(zhì)量雙固相體系中固相組合對環(huán)丙沙星的吸附能力最強的組合為生物膜和表層沉積物,其次為生物膜和懸浮顆粒物的組合,吸附能力最弱的為表層沉積物和懸浮顆粒物的組合。在固相物質(zhì)質(zhì)量相同的情況下,共存體系對林丹的吸附能力與其體系中溶解性有機質(zhì)(Dissolved Organic Matter,DOM)的含量大小一致。等質(zhì)量雙固相體系中生物膜、懸浮顆粒物和表層沉積物對林丹的吸附貢獻分別為:45.4%,35.7%和18.9%;它們對環(huán)丙沙星的吸附貢獻分別為:44.6%,27.2%和28.3%。共存的固相物質(zhì)吸附林丹和環(huán)丙沙星時,不同固相物質(zhì)之間存在相互抑制作用,且DOM含量差距較大的共存體系對其吸附林丹和環(huán)丙沙星的抑制能力更強。在多固相共存體系中,固相物質(zhì)DOM中的類胡敏酸組分變化較大,DOM中的類胡敏酸等組分在共存體系中的重新分配導(dǎo)致了多固相吸附體系與單固相吸附體系中有機污染物吸附特征的差異。
[Abstract]:Natural water is a complex multiphase coexistence system. Solid matter such as biofilm, suspended particulate matter and surface sediment are important components of natural water body, which participate in the process of pollutant migration and transformation in natural water. The adsorption process of pollutants at the water-solid interface is usually the decisive step to influence the subsequent environmental behavior of pollutants. For a long time, researchers have paid much attention to the adsorption of pollutants or co-existing pollutants in a single solid-phase aqueous system. Little attention has been paid to the effects of interactions between solid substances in water on their adsorption of pollutants. Biofilms coexisting in the same natural water, suspended particulates and sediments can exchange matter, It usually affects and even transforms each other's composition and structure. The interaction between solid matter will inevitably affect the environmental behavior of pollutants in water. The research on the interaction between solid matter and its influence on the environmental behavior of pollutants in water is helpful to understand the migration and transformation behavior of pollutants in real water environment. To two organic pollutants of widespread concern: Lin Dan, a typical organochlorine pesticide, and ciprofloxacin, a quinolone antibiotic, as a target. The isothermal adsorption experiments of three kinds of solid materials, suspended particulate matter and surface sediment, were carried out, and the differences of adsorption characteristics between Lin Dan and ciprofloxacin in different systems were analyzed. The changes of the composition of solid matter in the system of multi-solid phase coexistence were analyzed, and the mechanism of the interaction of solid matter on the adsorption of organic pollutants was discussed. The order of adsorption ability of solid matter to Lin Dan in single solid phase system is as follows: surface sediment of suspended particulate matter in biofilm, and the combination of biofilm and suspended particle in the combination of solid phase and suspended particle in two-solid phase system of equal mass. Secondly, the combination of biofilm and surface sediment, the combination of surface sediment and suspended particulates was the weakest. The adsorption ability of single solid phase system to ciprofloxacin was the same as that of Lin Dan. The combination of biofilm and surface sediment was the most powerful combination of solid phase combination to ciprofloxacin, followed by biofilm and suspended particulates. The weakest adsorption capacity is the combination of surface sediment and suspended particulate matter. When the mass of solid matter is the same, The adsorption ability of the coexistence system to Lin Dan was consistent with the content of dissolved organic matter (Organic matter) in the system. The contribution of suspended particulates and surface sediments to Lin Dan adsorption was 35.7% and 18.9%, respectively, and their adsorption contribution to ciprofloxacin was 27.2% and 28.30.When they were adsorbed by the existing solid phase substances, respectively, the adsorptive contribution to ciprofloxacin was 27.2% and 28.30.When the coexisting solid phase substance adsorbed Lin Dan and ciprofloxacin, There were mutual inhibition among different solid phase substances, and the adsorption ability of Lin Dan and ciprofloxacin was stronger in the coexistence system with large difference in DOM content. In the system of multi-solid phase coexistence, the absorption of Lin Dan and ciprofloxacin was stronger than that of the co-existing system. The repartition of Hu Min-like acids in the solid phase DOM led to the difference of the adsorption characteristics between the multi-solid-phase adsorption system and the single-solid-phase adsorption system.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：X52

【相似文獻】

相關(guān)期刊論文 前10條

1 楊超,佟延功,崔國權(quán),呂松,范春;西泉眼水庫及周圍地區(qū)林丹環(huán)境污染調(diào)查[J];中國公共衛(wèi)生;2005年02期

2 陳維新;;用反萃取法試制林丹[J];遼寧化工;1980年04期

3 N.D.Westcott;李植生;;從土壤中提取林丹的新溶劑[J];農(nóng)業(yè)環(huán)境與發(fā)展;1987年01期

4 姜志毅,張國光,高大新;農(nóng)林害蟲的克星—林丹[J];天津化工;1990年04期

5 姚建仁;趙靜;王政國;鄭永權(quán);焦淑貞;周正修;張國光;高大新;韓廣珠;;國外林丹的使用方法與防治對象[J];農(nóng)業(yè)環(huán)境與發(fā)展;1990年01期

6 姚建仁;鄭永權(quán);趙靜;王政國;焦淑貞;張國光;高大新;韓廣珠;;林丹對環(huán)境的污染及其致癌作用[J];農(nóng)業(yè)環(huán)境與發(fā)展;1990年01期

7 張國光;高大新;韓廣珠;姚建仁;焦淑貞;趙靜;王政國;鄭永權(quán);;從林丹在國外林業(yè)上的使用談在我國擴大應(yīng)用的價值[J];農(nóng)業(yè)環(huán)境與發(fā)展;1990年01期

8 姚建仁;鄭永權(quán);趙靜;王政國;焦淑貞;張國光;高大新;韓廣珠;;林丹生物降解研究進展[J];農(nóng)藥譯叢;1990年03期

9 李巴;啟用林丹利國利民[J];湖南化工;1991年01期

10 鄭永權(quán);國外關(guān)于林丹生物代謝的研究[J];世界農(nóng)業(yè);1991年03期

相關(guān)會議論文 前3條

1 冷波;安忠鑫;周志輝;;林丹、李宗偉、陶菲克發(fā)接發(fā)以及前場技戰(zhàn)術(shù)運用的對比研究[A];2013年全國競技體育科學(xué)論文報告會論文摘要集[C];2013年

2 鄭永權(quán);姚建仁;倪漢祥;邵向東;屈振剛;張淑芬;;林丹防治成蟲期小麥吸漿蟲藥效、殘留及對天敵影響的研究[A];“植物保護21世紀展望”——植物保護21世紀展望暨第三屆全國青年植物保護科技工作者學(xué)術(shù)研討會文集[C];1998年

3 任明忠;劉相梅;彭平安;許振成;;環(huán)境有機組分對FeS-水體系下林丹非生物轉(zhuǎn)化的影響[A];持久性有機污染物論壇2006暨第一屆持久性有機污染物全國學(xué)術(shù)研討會論文集[C];2006年

相關(guān)重要報紙文章 前10條

1 本報評論員;向林丹同志學(xué)習(xí)[N];福建日報;2007年

2 記者　 林麗明;向林丹同志學(xué)習(xí) 做人民滿意的社區(qū)工作者[N];福建日報;2007年

3 本報記者　吳金W怠〗，

本文編號：1643338