悬浮液进样-火焰原子吸收光谱法测定食用菌中的锰  

Direct Determination of Manganese in Edible Fungi Using Suspension Sample Introduction and Hypo-Sensitive Wavelength by Flame Atomic Absorption Spectrometry

作　　者：王元忠[1] 李涛[2] 刘鸿高[3] 李兴奎[3] 

机构地区：[1]云南英茂生物技术实验室,云南昆明650212 [2]玉溪师范学院,云南玉溪653100 [3]云南农业大学,云南昆明650201

出　　处：《光谱学与光谱分析》2007年第5期1021-1023,共3页Spectroscopy and Spectral Analysis

基　　金：云南省自然科学基金项目(2003C0006M)资助

摘　　要：介绍了一种悬浮液进样-次灵敏线火焰原子吸收光谱法(FAAS)测定食用菌中锰的方法。以琼脂为悬浮剂将食用菌样品均匀、稳定地悬浮于琼脂溶胶中,直接喷入空气-乙炔火焰中,采用锰280.1nm次灵敏线,工作曲线或标准加入法测定,省去了以往繁琐的样品化学前处理过程,解决了高锰样品测定中由于称样量小、稀释倍数过大所引起的分析误差。方法简便、快速。用该法测定美味牛肝菌和黑柄铦囊蘑标准样品,获得满意结果。A method for the direct determination of manganese in edible fungi using suspension sample introduction and hyposensitive wavelength by flame atomic absorption spectrometry（FAAS） was developed without chemical treatment. Agar sol was used as a suspending agent. Ground and sieved edible fungi sample was suspended homogeneously in the agar sol and introduced into air-acetylene flame, and manganese in the sample was determined directly. The results showed that the method was simple, and rapid with no interference. The linear range was 0-12μg·mL^-1. The relative standard deviation （RSD） was 0. 67% and the recovery was 97%-99%. It has been applied to the determination of manganese in edible fungi, standard boletus edulis and melanoleuca arcunta samples, and satisfactory results were achieved.

关 键 词：悬浮液进样 次灵敏线 火焰原子吸收光谱法 食用菌 锰 

分 类 号：O657.3[理学—分析化学]