摘要
采用离子色谱法测定危险固体废物—飞灰中残留的氯离子。样品用超声提取30min,过C18固相小柱净化,以Na_2CO_3/NaHCO_3混合溶液为流动相,IonPac AS14分析柱分离,流速:1.00mL/min;进样量:25μL;检测器:抑制型电导,检测限为0.02μg/mL。对比了采用直接用水提取过膜上机与过C18小柱除去有机杂质后上机测定两种样品处理方法的差异,最佳方法为后者。本方法重复性好,准确性高,方法的精密度、准确度满足分析要求。
An ion chromatography system for the determination of chloride ion in air pollution control residues was described. The mobile phase were sodium carbonate and sodium bicarbonate. The sample was extracted 30min by supersonic, then crossed the C18 column. The analytical column was Ionpac AS14, the examination limits was 0.02 g/mL. The recovery rate of the method was 97.5 % to 100.1%. The relative standard deviation was 1% （ n = 7）. The experimental results showed that the method is simple, reliable and inexpensive.
出处
《现代科学仪器》
2008年第4期118-119,共2页
Modern Scientific Instruments
关键词
离子色谱
飞灰
氯离子
ion chromatography
air pollution control residues
chloride ion
