微波高压硝酸消化原子荧光法测定微量砷  

ATOMIC FLUORESCENCE SPECTROMETRY DETERMINATION OF ARSENIC IN COAL WITH MICROWAVE AND HIGH-PRESSURE DIGESTION TECHNIQUE

作　　者：谢锋[1] 何锦林[2] 谭红[2] 邓秋静[1] 宋春然[1] 陈安宁[1] 吉玉碧[1] 

机构地区：[1]贵州大学,贵州贵阳550003 [2]贵州省理化测试分析研究中心,贵州贵阳550001

出　　处：《贵州科学》2005年第1期17-19,40,共4页Guizhou Science

基　　金：国家自然科学基金项目(20067001);贵州省跨世纪人才工程资助项目;黔科合人字(2000)9807号。

摘　　要：采用微波消化测定煤和土壤中微量元素砷.用硝酸高压消解,然后用原子荧光仪测定.方法的检出限0.011ng/L,线性范围0～40 ng/L,其回收率为90.95～104.25%.该方法简便了煤和土壤中砷的消化和测定,精密度高,检出限低.Determination of arsenic applies microwave and high-pressure digestion technique. It is determined with nitric acid in a high-pressure microwave oven and then analyzed by atomic fluorescence spectrometry .The detection limit is 0.011ng/L,The calibration lines are linear in the range of 0~40 ng/L,and the recoveries of these materials range from 90.95% to 104.25%.The method is simple, rigid and low on the detection limit.

关 键 词：荧光法测定 硝酸 微量砷 中微量元素 原子荧光仪 微波消化 高压消解 线性范围 检出限 回收率 精密度 土壤 

分 类 号：O613.63[理学—无机化学] S153.62[理学—化学]