流动注射在线分离富集与石墨炉原子吸收光谱法联用的研究  

Flow Injection On -Line Preconcentration -Graphite Furnace Atomic Absorption Spectrometry for the Determination of Cadmium, Copper and Nickel

作　　者：苏星光[1] 张寒琦[1] 金钦汉[1] 陈明岩 邹明强 王大宁 

机构地区：[1]吉林大学化学系,长春130023 [2]吉林省进出口商品检验局,长春130062

出　　处：《分析化学》1998年第6期715-718,共4页Chinese Journal of Analytical Chemistry

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Ｃ１８反相键合硅胶为柱材料，以二乙基二硫代氨基甲酸钠为螯合剂，乙醇为洗脱液，以固定体积洗脱方式测定了Ｃｄ、 Ｃｕ和 Ｆｅ，富集倍数分别为 ４０、２９和 １８（与 ３０ ｕＬ进样量相比），检出限（３σ）分别为 ０． ４、３． ０和 ２２ ｎｇ／Ｌ。The flow injection on-line preconcentration system is combined with graphite furnace atomic absorption spectrometry. Bounded silica gel with octadecyl functional group (C18 ) was used as column-packing material. Sodium diethyldithiocarbamate was used as chelating agent and ethanol was used as eluant. Based on the way of volume-controlled eluate zone sampling, the enrichment factors for the determination of Cd,Cu and Fe are 40, 29 and 18, respectively. The detection limits(3σ) are 0. 4, 3. 0 and22 ug/L for Cd, Cu and Fe, respectively.

关 键 词：流动注射 石墨炉 原子吸收光谱 FI GFAAS 联用 

分 类 号：O657.31[理学—分析化学]