摘要
3 氯 4 (二氯甲基 ) 5 羟基 2 ( 5H) 呋喃酮 (MX)及二氯乙酸 (DCA)和三氯乙酸 (TCA)是氯化消毒副产物 (DBPs)研究的重点。水体中的腐殖质 ,特别是富里酸 ,是饮用水消毒副产物的重要前驱物。从太湖底泥中提取富里酸 ,进行模拟氯化 ,用GC/MS测定生成的MX和氯代酸 ,研究氯化条件对MX、DCA及TCA生成量的影响。结果发现 ,MX、DCA、TCA的生成量与总有机碳 (TOC)浓度呈正性相关 ;与其它氯化条件如反应时间、投氯量、pH值。
MX (3 Chloro 4 (dichloromethyl) 5 hydroxy 2(5H) furanone) and chlorinated acetic acids such as DCA and TCA have always been the focus of Disinfection by products(DBPs) study. In order to find out the influences of reaction time, TOC, chlorine dose, pH and temperature on the formation of MX, DCA and TCA, we extracted fulvic acid(FA) from the sediment of Tai Lake, and conducted simulated chlorination of samples rich in FA, with GC/MS as analyzing instrument. Results showed positive relationship between TOC and the yields of MX, DCA and TCA. But the influences of pH, chlorine dose, reaction time, and temperature on the formation of MX, DCA and TCA are quite different and complex.
出处
《南京林业大学学报（自然科学版）》
CAS
CSCD
2000年第2期11-15,共5页
Journal of Nanjing Forestry University：Natural Sciences Edition
基金
国家自然科学基金资助项目! (No .2 99770 7)
