在线阴离子富集-石墨炉原子吸收光谱法的研究  

Studies on the On-line Anion Exchange Preconcentration for Graphite Furnace Atomic Absorption Spectrometry

作　　者：苏星光[1] 张寒琦[1] 梁枫[1] 金钦汉[1] 白锁柱[2] 

机构地区：[1]吉林大学化学系,长春130023 [2]内蒙古民族师范学院化学系,通辽028043

出　　处：《高等学校化学学报》1999年第8期1189-1193,共5页Chemical Journal of Chinese Universities

摘　　要：将流动注射在线预富集系统与石墨炉原子吸收光谱法联用 ,以强碱型阴离子交换纤维为柱填充材料 ,以浓盐酸为络合剂 ,以稀盐酸为洗脱液 ,用固定洗脱液体积方式测定了 Cd,Pb和 Zn,富集倍数分别为 1 9,1 7和 1 5(与直接引入 40 μL进样量相比 ) ,检出限 ( 3σ,ng L)分别为 1 1 ,8 2和 2 6 .Flow injection preconcentration system was introduced into graphite furnace atomic absorption spectrometry in this study. Strongly basic anion exchange fiber was selected as the absorption material, concentrated HCl as complex agent, diluted HCl as eluant. Volume\|based elution technique was proposed and applied in this study. Cd, Fe and Zn were determined by the proposed method. The enrichment factors are 19, 17 and 15 (compared with 40 μL sample), the detection limits for the Cd, Pb and Zn are 1.1, 8.2 and 2.6 ng/L, respectively.

关 键 词：注动注射 石墨炉 原子吸收光谱 在线富集 GFAAS 

分 类 号：O657.31[理学—分析化学]