阳离子交换树脂分离-离子色谱法测定多金属矿石中氯离子  

Determination of chloride ions in polymetallic ores by cation exchange resin separation ion chromatography

作　　者：吴永博 WU Yong-bo(Lanzhou Mineral Exploration Institute of Gansu Nonferrous Metals Geological Exploration Bureau,Lanzhou 730046,China)

机构地区：[1]甘肃省有色金属地质勘查局兰州矿产勘查院,甘肃兰州730046

出　　处：《世界有色金属》2024年第6期73-75,共3页World Nonferrous Metals

摘　　要：多金属矿石样品前处理用碳酸钠-氧化锌混合熔剂烧结,以水加热提取,提取液用阳离子交换树脂静态交换分离大量基体后,用离子色谱仪测定,测定时用碳酸钠和碳酸氢钠为淋洗液,在淋洗液携带下,氯离子与其他阴离子分离,经电导检测器测定氯离子电导率,以保留时间定性,峰面积定量,计算出样品中氯离子的含量。本方法测定的线性范围为10mg/kg~10000mg/kg,检出限为6.62mg/kg,测定灵敏度高,结果稳定性好。The samples of polymetallic ores were sintered with a mixed flux of sodium carbonate and zinc oxide,the extraction was heated with water,and a large amount of the matrix was separated with a Ion-exchange resin static exchange and determined by ion chromatography,sodium carbonate and Sodium bicarbonate were used as eluent.The chloride ions were separated from other anions in the eluent.The conductivity of the chloride ions was determined by conductivity detector to determine the retention time and the peak area,the content of chloride ion in the sample was calculated.The linear range of the method is 10mg/kg~10000mg/kg,and the detection limit is 6.62mg/kg.The method has high sensitivity and good stability.

关 键 词：多金属矿石 离子色谱法 氯离子 

分 类 号：O657.7[理学—分析化学]