地质样品中铜的四个相态的同时测定  

Simultaneous Determination of Four Phases of Copper in Geological Samples

作　　者：陈淑桂[1] 詹天荣[2] 王英华[1] 扬兵[1] 王洪艳[1] 

机构地区：[1]吉林大学朝阳校区化学系,长春130026 [2]中国科学院海洋研究所,青岛266071

出　　处：《分析化学》2003年第9期1093-1096,共4页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金资助项目 (No .2 9975 0 0 4)

摘　　要：根据铜矿物各相的浸取特性 ,确定了自由氧化铜相、结合氧化铜相、次生硫化铜相及原生硫化铜相的浸取体系及浸取条件 ;确定了稳定的浸取率常数。利用铜各相态的浸取常数建立数学模型 ,采用目标约束遗传算法 (GA)对一次性浸取测得的浸取总量进行计算 ,求得铜各相态的含量。方法的相对标准偏差 (% )为 :自由氧化铜相 1 .5 ,结合氧化铜相 1 7.6,次生硫化铜相 1 .9,原生硫化铜相 2 .7,总铜 0 .8。According to the specific property of respective phases in copper ore, optimal extracting condition for, tour phases of copper with five infusion was examined. After a series of experiments, for example, different weight Of sample, artificial mixed single phases sample and repeated experiment, the extracting ratio constants foil all phases in different infusions were obtained. The mathematical model which is on the basis of the stable extracting constant is established. Based on the purpose-control genetic algorithms, we only need to determine the total copper in the sample in different infusions under the selected condition, then the value of respective phase could be calculated. The-relative standard deviation are (%) free oxidized copper phase:1.5, conjunction oxidized copper phase: 17.6,, secondary copper sulfide phase: 1.9, primary copper sulfide phase : 2.7,total copper: 0.8.

关 键 词：地质样品 铜 相态分析 数学模型 同时测定 遗传算法 

分 类 号：P618.41[天文地球—矿床学]