摘要
采用树脂分离技术对水体中的溶解性有机物(DOM)进行分离富集,得到疏水性中性物(HPON)、疏水性碱(HPOB)、疏水性酸(HPOA)、亲水性中性物(HPIN)、亲水性碱(HPIB)和亲水性酸(HPIA)等6种组分,以其中HPIN、HPIB、HPIA作为研究对象,考察了在高浓度溴离子的影响下,亲水性有机物形成三卤甲烷(THMs)的变化情况。结果表明,溴离子的加入,HPIN是加氯消毒时产生三卤甲烷(THMs)的主要前提物质,且形成THMs的活性HPIN≥HPIA>HPIB,而且三种亲水性有机物对THMs贡献因子n明显增加,同时大大增加了亲水性组分在氯消毒后的总致癌风险。
The water solubility of organic matter（DOM） was fractionated using DAX-8、WA-10、AG-MP-50 resins into six fractions： hydrophobic neutral（HPON）,hydrophobic base（HPOB）,hydrophobic acid（HPOA） hydrophilic neutral objects（HPIN）,hydrophilic base（HPIB） and hydrophilic acid（HPIA）.A study was conducted on the effect of brominde on trihalomethanes（THMs） formation of HPIN,HPIB,HPIA during the Chlorination Disinfection.With increasing bromide levels,the results showed：（1）HPIN was the main precursors for the enhanced the formation of THMs following chlorination,and HPIN≥HPIAHPIB.（2）The factor n of bromine incorporation into THMs was improved obviously.（3）There was a marked increase in the corresponding total cancer risk of THMs of the hydrophilic DOM during the Chlorination Disinfection.
出处
《江西化工》
2012年第2期57-62,共6页
Jiangxi Chemical Industry
关键词
溶解性有机物
亲水性组分
溴离子
氯消毒
三卤甲烷
dissolved organic matter hydrophilic bromide chlorination disinfection THMs
