改性硅胶分离富集-X射线荧光能谱法测定金精矿中的金  

Determination of Gold in Gold Concentrate after Preconcentration and Separation with Modified Silica Gel by Energy Dispersive X-ray Fluorescence Spectrometry

作　　者：潘飞[1] 姜晨阳 郝晓雯[1] 田宇纮[1] 刘永明[1] 邬旭然[1] PAN Fei JIANG Chen-yang HAO Xiao-wen LIU Yong-ming TIAN Yu-hong WU Xu-ran(School of Chemistry and Chemical Engineering of Yantai University, Yantai 264005, Chin)

机构地区：[1]烟台大学化学化工学院,山东烟台264005

出　　处：《烟台大学学报（自然科学与工程版）》2017年第4期356-360,共5页Journal of Yantai University(Natural Science and Engineering Edition)

基　　金：国家自然科学基金资助项目(21575122)

摘　　要：硅胶通过L-半胱氨酸修饰后得到改性硅胶,改性硅胶对金元素具有很强的吸附作用,将其作为分离富集手段,结合薄样技术-X射线荧光能谱法,可用于检测金矿中的金含量.本研究优化了包括pH值、洗脱液的种类、洗脱液的体积、最大吸附容量、最大富集倍数等参数.在最优条件下,金元素的最大富集倍数为100,检出限为0.017μg/mL.本方法可应用于金精矿样品中金的测定.The modified silica gel is prepored by L-cysteine functionalization, which has strong adsorption interaction with gold element, and can be served as an adsorbent combined with X-ray fluorescence spectroscopy（XRF） to detect gold elements in gold mine. The experimental parameters are optimized including pH value, elution volume, the type of eluent, and the maximum adsorption capacity, as well as concentration etc. Under the optimal conditions, the largest enrichment factor is 100 and the lowest detection limit is 0. 015 μg/mL. The method can be applied to determine the gold element in gold concentrate.

关 键 词：改性硅胶 L-半胱氨酸 X射线荧光能谱法 分离富集 金 

分 类 号：O65[理学—分析化学]