UNF 减水剂的紫外光谱分析  

ANALYSIS OF WATER REDUCING AGENT UNF BY ULTRAVIOLET SPECTROSCOPY

作　　者：何建波[1] 邓传芸[1] 庆卫星 陈宏伟 金世昌 

机构地区：[1]合肥工业大学化工学院

出　　处：《合肥工业大学学报（自然科学版）》1998年第2期50-53,共4页Journal of Hefei University of Technology：Natural Science

摘　　要：采用紫外光谱法定量分析ＵＮＦ高效减水剂，较好地解决了标准样的制备问题，并找到了符合Ｌａｍｂｅｒｔ－Ｂｅｒ定律的入射光波长。所选波长３６０ｎｍ，百分消光系数６．６０ｇ－１·（１００ｍｌ）·ｃｍ－１，精密度和回收率试验结果令人满意，操作简便快捷，干扰少。An ultraviolet spectroscopy method is developed for the quantitative analysis of water reducing agent prepared from β naphthalenasulfonic acid and formaldehyde.The absorption concentration curve at wavelength 360 nm instead of the maximum absorptive wavelength 340 nm gives the Lambert-Beer relation with a percent absorptivity 6.60g -1 ·(100ml)·cm -1 .This convenient method was used to quickly detect the content of the condensates of sodium β naphthalene sulfonate and formaldehyde with relative standard deviation less than 0.1% and recovery 97.5%～103.7%.

关 键 词：紫外光谱 减水剂 定量分析 UNF 混凝土 

分 类 号：TU528.042[建筑科学—建筑技术科学]