微波溶样流动注射分光光度法在线测定金矿石中的金  

Study on the on-line measurement of Au in gold ores by microwave dissolving-flow injection-spectrophotometry

作　　者：张竹青[1] 佘振宝[2] 赵勇胜[1] 李俊峰[2] 张艳[2] 洪梅[1] 

机构地区：[1]吉林大学环境与资源学院,长春130026 [2]吉林大学化学学院,长春130026

出　　处：《分析试验室》2004年第3期12-14,共3页Chinese Journal of Analysis Laboratory

摘　　要：采用微波溶样 流动注射在线泡塑富集分离 分光光度联用技术建立了在线快速测定金矿石中金的方法。比较了微波溶样法与传统电热板溶样法,二者结果基本一致。前者溶样时间近似为后者的1 9。确定了两条工作曲线:校正曲线范围为0 1～1.0μg mL,检出限2.2×10-2μg mL;校正曲线范围为1.0～9 0μg mL,检出限1.6×10-1μg mL。FI SP系统分散系数为3.78。对管理样GBW(E) 070014平行11次测定,其RSD为1.3%,对所得结果进行t检验,置信度95%时,无系统误差存在。A method for measuring Au in gold ores by the combined technology of microwave-oven dissolving samples, flow injection on-line separation, preconcentration with foamed plastics as carrier, and spectrophotometry determination was established. Compared with the traditional method using the electric hot plate, the new method for dissolving samples with microwave oven showed almost the same results but with much less time. Two working curves were set up: the range of the first curve was 0.1～1.0 μg/mL with a detection limit(3 σ ) of 2.2×10^(-2) μg/mL; the range of the second one was 1.0～9.0 μg/mL with a detect limit of 1.6×10^(-1) μg/mL. The dispersion coefficient of this system was 3.78. The relative standard deviation( n =11) was 1.3% for the geological standard sample GBW(E)-070014.

关 键 词：金矿石 金 野外在线测定 微波溶解 流动注射 分光光度法 泡塑 

分 类 号：P578.11[天文地球—矿物学] P575.4[天文地球—地质学]