第 49卷第 4期
2017年 8月
西安建筑科技大学学报(自然科学版) J.Xi an Univ.of Arch.8L Tech.(Natural Science Edition)
Vo1.49 No.4
Aug.2017
DOI:10.159861j.1006—7930.2017.04.014
西 北 某 水 厂 原 水 中 土 臭 素 和 二 甲 基 异 莰 醇
年 变 化 特 征 与 来 源 分 析
王 文 东 , 刘 国 旗 , 范 银 萍 , 张 轲
(1.西安建筑科技大学环境与市政工程学院,陕西 西安 710055;2.浙江清华长三角研究院生态环境研究所,浙江嘉兴 314006)
摘要:为了探究西北某水厂致嗅物质的来源及其变化规律,解决其饮用水嗅味问题 .选取我国西北某城市 A水厂第二系列
各工艺出水,以土臭素(Geosmin,GSM)和二甲基异莰醇(MIB)两种致嗅物质为研究对象,运用顶空一固相微萃取一气相色谱
法(HS-SPME—GC)进行检测 .结果表明:一年中 A水厂原水 GSM 和 MIB在 4—5月和 1l一12月两个时段浓度均明显升
高,最高浓度达到其嗅阈值的 4o~50倍 .其他时段 GSM均处于 10 ng/L以下 ,MIB则在 1o~50 ng/L之间 .通过比较两
种嗅味物质浓度变化得出:MIB为 A水厂水源的主要致嗅物质 ;原水的水温和浊度对两种嗅味物质浓度变化影响具有协同
作用;水厂净水工艺对 GSM和 MIB无明显的去除效果 .利用 BG11液体培养基对原水中的藻类进行培养后 ,发现优势藻
种为浮丝藻,属于蓝藻门;GSM、MIB浓度从最初的 10 ng/L以下分别升高到 28 ng/L和 1 317 ng/L.
关键词:土臭素 ;二甲基异莰醇;固相微萃取;蓝藻
中图分类号:X524 文献标志码:A 文章编号:1006—7930(2017)04—0548-07
Seasonal variation characteristic and source analysis of G SM and M IB
in raw w ater in a w ater plant of northw est China
WANG Wendong ,L UGuoqi ,FAN Yinping ,ZHANG Ke
(1.School of Environmental and Municipal Engineering,Xi an Univ.of Arch.& Tech.,Xi an 710055,China;
2.Department of Environmental Technology and Ecology,Yangtze Delta Region Institute of
Tsinghua Univ.,Jiaxing 314006,China)
Abstract:In order to explore the sources and variations of odor substances in a water plant of Northwest China,and
to solve the odor problem of drinking water,a water plant in a city of Northwest China was selected as monitor
object,using the method of headspace—solid phase microextraction-gas chromatography to do the detection.As a
result,the concentration of GSM and MIB in raw water of the water plant significantly increased between in the
April and May and also between November and December in a same year.The highest concentrations of both
materials are 4O~ 5O times when they are mentioned to each corresponding threshold odor number. At other
stages,the concentration of GSM is under 10 ng/L。while MIB is in 10~50 ng/L.Through comparison of these
two odor materials.MIB becomes the main odor substance in raw water of the water plant.The water temperature
and turbidity have a synergistic effect to the concentration of GSM and MIB.The traditional water treatment
process is no use for T 8L 0 compounds remova1.At the same time,BG1 1 liquid medium was used to cultivate
algae in the raw water in J une 2 5.and analysis on the change of algae and the concentrations of GSM and MI
西北某水厂原水中土臭素和二甲基异莰醇年变化特征与来源分析(论文).pdf