本文選題：熱激活 + 硫酸根自由基��； 參考：《中南大學學報(自然科學版)》2016年01期

【摘要】：針對水環(huán)境中廣泛殘留的氟喹諾酮類抗生素污染問題,采用熱激活過硫酸鹽方式降解3種典型氟喹諾酮抗生素(環(huán)丙沙星、諾氟沙星、恩諾沙星),考察其在不同pH下的降解情況,構(gòu)建相關自由基動力學氧化模型,并將數(shù)學模型與實驗數(shù)據(jù)相耦合計算體系中特征自由基的濃度及目標物擬二級動力學反應常數(shù)。研究結(jié)果表明:建立的模型能夠較好地描述氟喹諾酮微觀反應動力學,反應體系中·SO_4~-及·HO濃度受pH影響較大,環(huán)丙沙星、諾氟沙星、恩諾沙星與·SO_4~-反應的二級動力學常數(shù)分別為6.96×107±2.31,2.52×10~7±4.47和8.55×10~7±1.98L/(mol·s)。
[Abstract]:In view of the contamination of fluoroquinolones widely residual in water environment, three typical fluoroquinolones (ciprofloxacin, norfloxacin) were degraded by thermal activated persulfate. The degradation of enrofloxacin at different pH was investigated and the kinetic oxidation model of related free radicals was constructed. The mathematical model was coupled with the experimental data to calculate the concentration of characteristic free radicals and the pseudo-second-order kinetic reaction constants of the target compounds. The results show that the model can describe the kinetics of fluoroquinolone reaction. The concentration of so _ 4 and Ho in the reaction system is greatly affected by pH, ciprofloxacin, norfloxacin, and norfloxacin. The second-order kinetic constants of enrofloxacin and so _ 4- reaction were 6.96 脳 107 鹵2.31 鹵2.52 脳 10 ~ (7) 鹵4.47 and 8.55 脳 10 ~ (7) 鹵1.98 L / mol / s, respectively.
【作者單位】： 四川大學建筑與環(huán)境學院;同濟大學水污染與控制國家重點實驗室;四川省醫(yī)學科學院四川省人民醫(yī)院;
【基金】：國家科技重大專項(2012ZX07403-001) 四川省環(huán)�？萍加媱濏椖�(2013HB08) 中央高�；究蒲袠I(yè)務費資助項目(2082604184026)~~
【分類號】：X131.2
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本文編號：2000853