摘要
目的 研究应用离子色谱法测定净水剂中硫酸根的方法 ,探索该方法的实用意义。方法 离子色谱法 ,电导检测器 ,Altech阴离子分析柱。流动相 :pH1 0 ,1mmol/LNa2 CO3 及 1mmol/LNaHCO3 。流量 1 .2ml/min。结果 灵敏度 2 1 873ns·ml/mg ,检出限为 0 .0 2 2mg/L ,精密度 <7% ,相关系数 >0 .999,回收率85 .5 %～ 1 1 3%。
Objective In order to build a method for determining vitriol in water purifiers. Methods Ion chromatography combined with standard curve was used. Conditions of the method was as follow: flow-phase system: pH 10, 1 mmol/L Na 2 CO 3 and 1mmol/L NaHCO 3 , flow: 1.2 ml/min. Results The results showed that sensitivity was 21873ns *ml/mg. The detection limit was 0.022mg/L, RSD of the precision was less than 7%, the regressive codefficient was more than 0.999, recovery fraction was 85.5%～113%. Conclusions This method was suitable for determination of vitriol in water purifiers.
出处
《安徽预防医学杂志》
2004年第3期161-162,164,共3页
Anhui Journal of Preventive Medicine
关键词
离子色谱法
测定
硫酸盐
净水剂
ion chromatography
vitriol determination
water purifier
