浙江省H市水处理及供水系统4种人工甜味剂的分布特征  

Distribution of Four Artificial Sweeteners in Water Treatment and Water Supply System in City H of Zhejiang Province

作　　者：马晓雁[1] 胡慧 陆思嘉 李青松 薛乐飞 李雪纯[1] 邓靖[1] MA Xiao-yan;HU Hui;LU Si-jia;LI Qing-song;XUE Le-fei;LI Xue-chun;DENG Jing(College of Civil Engineering,Zhejiang University of Technology,Hangzhou 310014,China;Fujian Engineering and Research Center of Rural Sewage Treatment and Water Safety,Water Resources and Environmental Institute,Xiamen University of Technology,Xiamen 361005,China)

机构地区：[1]浙江工业大学土木工程学院,杭州310014 [2]福建省农村污水处理与用水安全工程研究中心,厦门理工学院水资源环境研究所,厦门361005

出　　处：《环境科学》2020年第4期1629-1635,共7页Environmental Science

基　　金：国家自然科学基金项目(51678527,51208468);浙江省自然科学基金项目(LY19E080019);福建省农村污水处理与用水安全工程研究中心开放项目(RST201803)。

摘　　要：以浙江省某市的饮用水及污水处理系统为主要调研对象,通过固相萃取-高效液相色谱(solid phase extraction-high performance liquid chromatography,SPE-HPLC)法展开了生活污水处理系统、水源、饮用水处理及供水系统中常见人工甜味剂的浓度调查.结果表明,SPE-HPLC可准确测定水中安赛蜜、糖精、阿斯巴甜和纽甜,检测限分别为57、120、170和47μg·L^-1,定量限分别为190、400、567和157μg·L^-1;PWAX柱固相萃取优化后,安赛蜜与糖精的回收率分别提高到86.5%和97.7%,而纽甜的回收率略下降至66.5%.生活污水中安赛蜜、糖精与纽甜的检出率可达100.0%,阿斯巴甜检出率仅为33.3%,4种人工甜味剂的最高浓度为0.83、4.52、1.22和7.57μg·L^-1.水源水中安赛蜜、糖精、阿斯巴甜和纽甜最高检出浓度为22.94、39.17、0.73和8.92μg·L^-1,检出率为分别为72.7%、90.9%、18.2%和90.9%.预臭氧工艺对安赛蜜、糖精和纽甜去除率为67.7%~100.0%,深度处理工艺对4种人工甜味剂去除效果好,去除率为73.7%~100.0%,有效降低了饮用水水质风险,管网中未检测到4种人工甜味剂的存在.Taking the sewage and drinking water treatment system of two cities in Zhejiang Province as the main research target,a systematic investigation on the common artificial sweeteners was carried out by solid phase extraction-high performance liquid chromatography(SPE-HPLC).The results showed that SPE-HPLC can accurately determine micro acesulfame(ACE),saccharin(SAC),aspartame(ASP),and neotame(NEO)in water.The detection limits were 57,120,170,and 47μg·L^-1,and the quantification limits were 190,400,567,and 157μg·L^-1,respectively.After optimization of the solid phase extraction procedure when using PWAX columns,the recoveries of ACE and SAC were enhanced to 86.5%and 97.7%;however,it slightly decreased to 66.5%for NEO.The occurrence rates of ACE,SAC,and NEO in domestic sewage were 100.0%,and it was only 33.3%for ASP.The highest concentrations of four aforementioned artificial sweeteners in domestic sewage were 0.83,4.52,1.22,and 7.57μg·L^-1,respectively.The highest concentrations of acesulfame,saccharin,aspartame,and neotame in source water were 22.94,39.17,0.73,and 8.92μg·L^-1,respectively,and detection rates were 72.7%,90.9%,18.2%,and 90.9%,respectively.Most artificial sweeteners were removed by the prozone process;the removal efficiencies of ACE,SAC,and NEO ranged from 67.7%to 100.0%,and the removal efficiencies of ACE,SAC,and NEO by the advanced treatment process ranged from 73.7%to 100.0%,which effectively reduced the risk of drinking water quality.The four artificial sweeteners were not detected in the water supply network.

关 键 词：新型污染物 人工甜味剂 污水处理系统 饮用水处理系统 水质安全 

分 类 号：X131.2[环境科学与工程—环境科学]