本文選題：消毒副產(chǎn)物 + -二氯丙酮��； 參考：《環(huán)境科學(xué)》2015年05期

【摘要】：采用氣相色譜/質(zhì)譜法,以甲基叔丁基醚為萃取劑,1,2-二溴丙烷為內(nèi)標(biāo)物,建立了消毒副產(chǎn)物1,1-二氯丙酮(DCAce)的測定方法.以L-亮氨酸為前體物,考察了DCAce的形成過程和影響因素.結(jié)果表明,當(dāng)氯胺投加量在5~30 mg·L-1范圍內(nèi),DCAce的生成量隨著氯胺投加量的增加而增加;DCAce的生成量隨著p H的增大而逐漸減小,在酸性條件下DCAce的生成量比中性和堿性條件下高;在15~35℃范圍內(nèi),溫度對DCAce生成量的影響較明顯,生成量隨著溫度的升高而增加;L-亮氨酸形成DCAce的過程包括8個步驟,經(jīng)過取代、氧化、斷鍵、氨基重氮化和還原等一系列復(fù)雜的反應(yīng)后,最終形成DCAce.
[Abstract]:A method was developed for the determination of disinfection by-product 1h2- dichloroacetone by gas chromatography / mass spectrometry with methyl tert Ding Ji ether as extractant and dibromopropane as internal standard. The formation process and influencing factors of DCAce were investigated with L-leucine as precursor. The results showed that when the dosage of chloramine was in the range of 5g / L, the amount of DCAce was increased with the increase of chloramine dosage, and the production of DCAce was higher than that of neutral and alkaline in acidic condition. The effect of temperature on DCAce production is obvious in the range of 15 ~ 35 鈩，

本文編號：1949221