石墨炉原子吸收光谱法直接测定饮料中痕量锰  

DIRECT DETERMINATION OF TRACE AMOUNTS OF Mn IN DRINKS BY GFAAS

作　　者：董发昕[1] 郎惠云[1] 袁宏安[1] 

机构地区：[1]西北大学化学系,西安710069

出　　处：《理化检验（化学分册）》2005年第11期818-819,822,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：提出了以硝酸为改进剂,石墨炉原子吸收光谱法直接测定饮料中痕量锰的方法,对试验条件进行了优化.方法具有简便、快速、检出限低等优点.检出限为0.65 μg·L-1,特征灵敏度为2.2×10-2pg.线性范围为1～15 μg·L-1,相关系数为0.998 8,回收率在101%～106%范围内.A new method for the direct determination of Mn in drinks by GFAAS was proposed in this paper. Nitric acid is used as a matrix modifier. The experimental conditions were optimizd. This method is simple, rapid and with low detection limit, which it is 0. 65μg·L^-1. The characteristic sensitivity is 2.2×10^-2pg for Mn. The linearity range is from 1 to 15μg·L^-1 , with correlation coefficient of 0. 998 8. Recoveries in the range of 101%- 106% were obtained.

关 键 词：石墨炉原子吸收光谱法 酒 饮料 锰 

分 类 号：O657.31[理学—分析化学]