摘要
本文建立了超声萃取—离子色谱法快速准确测定建设用砂中氯离子含量,参照并优化了GB/T14684-2011中规定的前处理方法,大大缩短了试验时间,本方法的检出限为0.01 mg﹒L-1,在两个浓度水平上对方法的精密度作了考核,测得其相对标准偏差（n=6）均小于1%,用标准加入法,以实样为基体作回收试验,测得回收率在95.0%~105.2%之间。
This research sets up a method,which is rapid and accurate for determination the chlorine ion in Construction sand through ultrasonic extraction-ion chromatography.According to and optimized the pre treatment method in GB/T14684-2011,the test time is greatly shortened,with detection limit（S/N=3）of 0.01 mg ﹒ L-1,Precision of the method was tested at 2 concentration levels,value of RSD ′ s（n=6）found were less than 1%.Values of recovery found by standard addition method were in the range from 95.0% ~ 105.2%.
出处
《中国建材科技》
2015年第5期1-2,共2页
China Building Materials Science & Technology
关键词
超声萃取—离子色谱法
建设用砂
氯离子
small volume injection ion chromatography
gypsum
sulfur trioxide
