本文選題：氟喹諾酮　切入點：抗生素　出處：《環(huán)境污染與防治》2016年11期 　論文類型：期刊論文

【摘要】：氟喹諾酮(FQs)在環(huán)境中經(jīng)常被檢出,會誘導(dǎo)抗藥細菌和人體抗性基因的產(chǎn)生。自然水體中溶解性物質(zhì)對FQs的光解具有顯著影響。以氙燈作為光源,測定了9種FQs在5個黃河河口水樣中的光解速率常數(shù),并研究了NO_3~-、Cl~-和溶解性有機質(zhì)(DOM)對巴洛沙星的光解速率常數(shù)的復(fù)合影響。結(jié)果表明,9種FQs的水解和生物降解等過程可以忽略不計,其在水樣中的光解過程都可以用一級動力學(xué)方程來描述,但速率常數(shù)差異很大。其中,洛美沙星的光解速率常數(shù)最大,巴洛沙星的光解速率常數(shù)最小,因此巴洛沙星可能的環(huán)境風(fēng)險最大。NO_3~-對巴洛沙星的光解過程具有顯著的促進作用,Cl-具有顯著的抑制作用,而DOM對巴洛沙星的光解過程影響不顯著。NO_3~-、Cl~-和DOM對巴洛沙星的光解過程的復(fù)合影響不是簡單的線性關(guān)系,而是存在一定的交互作用。
[Abstract]:Fluoroquinolones are often detected in the environment and induce the production of drug-resistant bacteria and human resistant genes. Soluble substances in natural water have a significant effect on the photolysis of FQs. The photolysis rate constants of nine kinds of FQs in five water samples of the Yellow River estuary were determined. The compound effects of no _ 3H _ 3C _ (-) and dissolved organic matter (DOM) on the photolysis rate constants of balofloxacin were studied. The results showed that the hydrolysis and biodegradation of nine kinds of FQs were negligible. The photolysis process in water samples can be described by first-order kinetic equation, but the rate constant is very different. Among them, the photolysis rate constant of Lomefloxacin is the largest, and that of Barrofloxacin is the smallest. Therefore, the possible environmental risk of barlofloxacin is the greatest. No _ 3s-has a significant promoting effect on the photolysis process of balofloxacin and has a significant inhibitory effect on the photolysis process of aloxacin. However, the effect of DOM on the photolysis process of balofloxacin is not significant. The compound effect of DOM and Nos on the photolysis process of balofloxacin is not a simple linear relationship, but a certain interaction.
【作者單位】： 大連理工大學(xué)環(huán)境學(xué)院工業(yè)生態(tài)與環(huán)境工程教育部重點實驗室;
【基金】：國家自然科學(xué)基金資助項目(No.21137001) 國家重點基礎(chǔ)研究發(fā)展計劃項目(No.2013CB430403)
【分類號】：X522

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