微波消解离子色谱法测定锂云母中铷、铯  

Determination of Rubidium and Cesium in Lepidolite Using Microwave Digestion-ion Chromatography

作　　者：邹娟[1] 杨清[1] 刘雨星[1] 杨三妹[1] 罗稳[1] 梁晓玲 ZOU Juan YANG Qing LIU Yu-xing YANG San-mei LUO Wen LIANG Xiao-ling(Changsha Design ＆ Research Institute, the Ministry of Chemical Industry Changsha, Hunan Engineering Research Center of Potassium and its Co-existed Resources, Changsha 410116, China)

机构地区：[1]化工部长沙设计研究院湖南省钾及伴生物工程技术研究中心,湖南长沙410116

出　　处：《精细化工中间体》2017年第4期68-70,76,共4页Fine Chemical Intermediates

摘　　要：建立了微波消解离子色谱法测定锂云母中铷、铯含量的方法。通过实验确定了样品处理条件、淋洗液浓度和淋洗液流速。方法对铷和铯的检出限分别为0.012 mg/L和0.013 mg/L,线性相关系数r大于0.999 9。对实际锂云母样品进行重复6次测定,并做了加标回收实验,相对标准偏差RSD为0.38%,加标回收率为97.39%~102.8%。经国家标准品验证,测定值与标准值相符。该方法快速准确,能达到测定锂云母中铷、铯含量的分析要求。A method of microwave digestion-ion chromatography was established, which could determine rubidium and cesium in lepidolite. The processing conditions of the sample, the amount of hydrochloric acid, the eluent concentration, and the flow rate of eluent were confirmed via experimental tests. The results showed that the limit of detection was 0.012 mg/L and 0.013 mg/L, The correlation coefficient of calibration curve was over 0.999 9. The determination of actual lepidolite samples was repeated six times, which indicated that the relative standard deviation was 0.38 %, and the recovery was ranged from 97.39 % to 102.8 %. The result of national standard material agreed with the recommended value. This method was fast with good accuracy, which was able to meet the requirements for determination of rubidium and cesium in lepidolite samples.

关 键 词：锂云母 微波消解 离子色谱法 铷 铯 

分 类 号：O657.7[理学—分析化学]