溶剂萃取-石墨炉原子吸收法测定地质样品中痕量碲  

Determination of Trace Te in Geological Samples by Solvent Extraction-GFAAS

作　　者：张佩瑜[1] 金义[1] 

机构地区：[1]中国有色金属工业总公司矿产地质研究院

出　　处：《岩矿测试》1990年第2期128-131,共4页Rock and Mineral Analysis

摘　　要：本文研究了塞曼石墨炉原子吸收光谱法测定痕量Te的各种条件;采用甲基异丁基酮于4.8mol/L HCI中萃取Te(Ⅳ)的氯化物;以Rh为基体改进剂石墨炉原子吸收法测定有机相中Te。Te的特征质量为7.6×10^(-11)g(0.0044 A),相对标准偏差为6.51％(2ng Te,n=10)。方法用于地质试样中痕量碲的测定,灵敏、快速、准确。Te(Ⅳ) is extracted with methyl isobutyl ketone(MIBK) from 4.8 mol/L hydrochloric acid solution in the presence of ascorbic acid. Rh is used as matrix modifer. The characteristic mass(0.0044 A) for Te is 7.6 × 10^(-11)g. The relative standard deviation is 6.51% (2ng Te,n = 10). The method has been applied satisfactorily to the determination of trace Te in geological samples.

关 键 词：碲 地质 样品 原子吸收法 石墨炉 

分 类 号：P575.3[天文地球—矿物学]