离子色谱抑制电导法测定铜氨浸出液中氯离子  

Determination of chloride in cuprammonium leaching solution by ion chromatography with suppressor conductivity detection

作　　者：张明星[1] 李华昌[2] 于力[2] 汤淑芳[2] 

机构地区：[1]北京师范大学化学学院,北京100875 [2]北京矿冶研究总院测试研究所,北京100044

出　　处：《冶金分析》2010年第12期44-47,共4页Metallurgical Analysis

基　　金：北京矿冶研究总院科研基金(YZ-2008-16)

摘　　要：研究了一种离子色谱抑制电导法测定冶金浸出液中氯离子的方法。以SH-AC-1型阴离子分离柱(10μm,4.6 mm×250 mm)为色谱柱,2.5 mmol/L碳酸钠+3.5 mmol/L碳酸氢钠的混合溶液为淋洗液,在柱温为25℃,流速为2.0 mL/min,进样量为100μL的条件下进行检测,氯离子检出限为0.51μg/L,线性范围为0.002～15.0 mg/L,线性方程为Y=1.2×106X-1.1×105(Y:峰面积;X:质量浓度mg/L),线性相关系数为0.999 8。将本方法应用于铜氨浸出液中氯离子的测定,相对标准偏差(n=11)为6.9%,加标回收率为104%。A determination method of chloride in metallurgical leaching solution was investigated by ion chromatography with suppressor conductivity detection .Using SH-AC-1 anion-exchange column（10 μm,4.6 mm×250 mm） as stationary phase and the mixed solution of 2.5 mmol/L of Na2CO3 and 3.5 mmol/L of NaHCO3 as leacheate,the determination was conducted at column temperature of 25 ℃,flow rate of 2.0 mL/min and sampling injection volume of 100 μL.The detection limit of chloride was 0.51 μg/L.The linear range was 0.002-15.0 mg/L for chloride.The linear equation was Y=1.2×106X-1.1×105（Y： peak area;X： mass concentration,mg/L） with linear correlation coefficient of 0.999 8.This method has been used in the determination of chloride in cuprammonium leaching solution with relative standard deviation（RSD,n=11） of 6.9 % and recoveries of 104 %.

关 键 词：铜氨浸出液 氯离子 离子色谱 

分 类 号：O657.75[理学—分析化学]