低分子量有机酸溶液分布曲线特征与应用  

Distribution curve characteristics of low-molecular-weight organic acids in the solution and its application

作　　者：李海斌 徐一洋[1] 翟红侠 董伟伟 孔维丽 李国莲 LI Haibin;XU Yiyang;ZHAI Hongxia;DONG Weiwei;KONG Weili;LI Guolian(School of Materials and Chemical Engineering,Anhui Jianzhu University,Hefei 230601,China;Key Laboratory of Functional Molecule Design and Interface Process,Anhui Jianzhu University,Hefei 230601,China;Anhui Key Laboratory of Water Pollution Control and Wastewater Resource,Anhui Jianzhu University,Hefei 230601,China)

机构地区：[1]安徽建筑大学材料与化学工程学院,安徽合肥230601 [2]安徽建筑大学功能分子设计与界面过程重点实验室,安徽合肥230601 [3]安徽建筑大学水污染控制与废水资源化安徽省重点实验室,安徽合肥230601

出　　处：《高师理科学刊》2022年第6期61-68,共8页Journal of Science of Teachers＇College and University

基　　金：安徽省高校省级自然科学研究项目(KJ2020JD13);安徽省先进建筑材料国际联合研究中心主任基金(JZCL014ZZ);住建部委托课题(2019-K-138);安徽省住建厅委托项目(2019YF-004)。

摘　　要：为解析低分子量有机酸(LMWOAs)溶液分布曲线(δ-pH)特征,以Origin软件为工具绘制草酸、水杨酸、柠檬酸、酒石酸、苹果酸分布曲线,并讨论其结构与形态在重金属光催化还原、有机酸吸附、重金属固化等方面的应用.结果表明,p H由0.00升高至14.00时,分子态δ随pH呈不断降低的趋势,离子态δ呈不断增加或先增加后降低的趋势.目前,衰减全反射-傅里叶变换红外光谱(ATR-FTIR)与电喷雾串联质谱(ESI-MS/MS)是表征LMWOAs分子形态的重要方法.此外,光催化还原Cr(Ⅵ)与吸附重金属过程中很少关注到LMWOAs形态分布对体系的影响,并且固化重金属过程中也很少考察重金属与LMWOAs的结合关系.因此,该研究不仅有助于控制LMWOAs参与的化学反应条件,而且能为LMWOAs参与的化学反应提供理论分析思路.In order to investigate the distribution curve characteristics of low-molecular-weight organic acids(LMWOAs)in the solution,the relation schemas of δ-p H of oxalic acid,salicylic acid,citric acid,tartaric acid and malic acid were drawn by the Origin software.In addition,the applications of structure and morphology of LMWOAs in photocatalytic reduction of heavy metals,adsorption of organic acids,solidification of heavy metals were also discussed.The results showed that the amount of δ in molecular phase decreased with the increase of pH value in the range of 0.00 to 14.00.However,the amount of δ in ion phase first increased,and then decreased.At the moment,ATR-FTIR and ESI-MS/MS are important methods for characterizing the molecular morphology of LMWOAs.In addition,the present researches have paid little attention to analyze the effect of the morphological distribution of LMWOAs on the reduction of Cr(VI)and the adsorption of heavy metals,and the binding relationship between heavy metals and LMWOAs was rarely investigated during the curing of heavy metals.Therefore,the study helps to control the chemical reaction conditions participated by LMWOAs,and it can also provide theoretical analysis ideas.

关 键 词：分布曲线 低分子量有机酸 草酸 水杨酸 柠檬酸 酒石酸 苹果酸 

分 类 号：O651[理学—分析化学]