ICP-AES法在高品质硅石矿分析中的应用  

THE APPLICATION OF ICP-AES METHOD TO ANALYSIS OF HIGH GRADE SILICA ORE

作　　者：朱家群 王学伟 赵蓓蕾[2] 

机构地区：[1]云南省有色地质局测试中心,云南昆明650216 [2]云南国土资源职业学院,云南昆明650217

出　　处：《云南地质》2016年第2期273-277,共5页Yunnan Geology

摘　　要：传统的化学分析方法对高品质硅石矿(含量w≥96%)中的二氧化硅难以准确测定,使用电感耦合等离子体发射光谱法(ICP-AES)可对硅石中Al_2O_3等10种杂质元素进行准确测定,结合样品烧失减量,利用差减法即可准确计算出硅石矿中二氧化硅的精确含量。该方法检测范围在0.00002%~10%,检出限下线为0.0004μg/m L^0.051μg/m L,精密度为0.82%~4.39%,准确度高相对误差小于4.17%。The CO2 （W ≥ 96% ） in high grade silica ore can＇t be determined accurately with the traditional chemical analysis method. 10 impurities of A1203, etc, in silica ore can be determined accurately with ICP-AES method. The precise SiO2 in silica ore can be calculated accurately with difference reduction method, in combination with sample ignition loss. The detection range of method 0. 00002% -10% , lower detection limit 0. 00004μg/ mL-0. 051μg/mL, precision 0. 82%-4. 39% , accuracy high, relative error less than 4.17%.

关 键 词：ICP-AES法 差减法 样品前期处理 

分 类 号：O657.31[理学—分析化学]