石墨炉原子吸收测定生物样品中痕量钴的基体改进剂的比较  

Graphite furnace atomic absorption spectrophotometry for determination of trace cobalt in biological sample and matrix modifier

作　　者：高振宗[1] 李玉琴[1] 

机构地区：[1]陕西师范大学实验中心

出　　处：《陕西师范大学学报（自然科学版）》1996年第3期57-59,共3页Journal of Shaanxi Normal University：Natural Science Edition

基　　金：陕西省卫生厅科研资助

摘　　要：在比较钴的基体改进剂的基础上，选定了ＮＨ４ＶＯ３为基体改进剂，拟定了用石墨炉原子吸收法测定人发中痕量钴的分析方法．结果表明，方法的线性范围为０～３２０ｎｇ／ｍＬＣｏ２＋，其特征量为１．３×１０－３μｇ／（ｍＬ·１％）．In determination of trace cobalt with graphite furnace atomic absorption spectrophotometry(GFAAS), the effect of matrix modifier of some reagents has been studied and compared. NH 4VO 3 is selected as the matrix modifier for changing the atomization process of sample of the biology. The sensitivity of the method is raised. The sensitivity is 1.3×10 -3 μg/(mL·1%). The calibration curve is linear for concentration 0～320 ng/mL Co 2+ . The relative error is ±2.7%. for the determination of trace Co in standard biological samples.

关 键 词：石墨炉原子吸收 生物样品 测定 基体改进剂 

分 类 号：Q581[生物学—生物化学] Q－331