文献类型：会议论文

英文题名：Separation of carcinogenic aromatic amines in the food colourants plant wastewater treatment

作者：Ye, Shengquan[1];Wu, Hui[1];Zhang Chaohua[2];Fu, Huang[3]

机构：[1]S China Univ Technol, Coll Light Ind & Food, Guangzhou 510640, Peoples R China;[2]Guangdong Ocean Univ, Coll Food Sci & Technol, Zhanjiang 524005, Guangdong, Peoples R China;[3]Guangdong Ocean Univ, Dept Appl Chem, Zhanjiang 524005, Guangdong, Peoples R China

会议论文集：Conference on Desalination and the Environment

会议日期：APR 22-25, 2007

会议地点：Halkidiki, GREECE

语种：英文

外文关键词：wastewater treatment; separation; lower electroosmotic flow; micellar electrokinetic capillary chromatography; aromatic amine

外文摘要：A new method of separation of carcinogenic aromatic amines in wastewater is given. With SDS (C(12)H(25)O(4)SN(a)) and beta-CD (beta-cyclodextrin) addition, it is effective to improve separation. At the same time, it forms mixed micelle. As a result, a micellar electrokinetic capillary chromatography (MECC) system was established. Nine aromatic amines were separated by the MECC with added lower concentration of beta-CD. In the system, the sample entered the capillary at the in positive electrode and was detected at the negative electrode. The experiment revealed that the separation of aromatic amines increased quickly with a slight increase in beta-CD concentration in MECC. Nine analytes reach the baseline separation in 13 min. The retention order of peaks of aromatic amines is related to the number of carbon atoms of the solute molecules and the numbers of amino. When the number of amino groups gets larger, the number of carbon atoms of the solute molecules becomes smaller, and the peaks elute earlier, the 110 mmol/L SDS and 10 mmol/L P-CD were chosen. When the NaH(2)PO(4) concentration is from 20 to 60 mmol/L, the separation of aromatic amines increased quickly. And then the 40 mmol/L is chosen. The optimal conditions were 40 mmol/L NaH(2)PO(4) (pH 9.6).