石墨炉原子吸收分光光度法测定不同产地土牛膝中铅、镉的含量  

Content Determination of Lead and Cadmium in Achyranthes bidentata form Different Habitats by Graphite Furnace Atomic Absorption Spectrometry

作　　者：马文杰[1] 黄志红[2] 刘伟[2] 黄秀英[2] 魏得良[2] 

机构地区：[1]湘南学院附一医院/郴州市第一人民医院,郴州市423000 [2]湘南学院化学与生命科学系,郴州市423000

出　　处：《中国药房》2010年第27期2541-2543,共3页China Pharmacy

基　　金：湖南省科技计划项目(06FJ4099)

摘　　要：目的:建立测定不同产地土牛膝中铅、镉含量的方法。方法:采用石墨炉原子吸收光谱法。结果:标样中铅、镉的浓度与吸光度各呈良好的线性关系。其中铅的线性范围为0～80.00μg·L-1(r=0.9996),相对标准偏差(n=10)为0～5.00%,加标回收率为95%～101%;镉的线性范围为0～7.000μg·L-1(r=0.9982),相对标准偏差(n=10)为1.00%～5.00%,加标回收率为98%～103%。结论:本法简单易行、方便快捷、灵敏度和精密度高、选择性好,结果令人满意。OBJECTIVE：To establish the methods for content determination of lead and cadmium in Achyranthes bidentata from different habitats.METHODS：Graphite furnace atomic absorption spectrometry was applied.RESULTS：There were a good linear relationship between the concentration and absorbance of lead and cadmium.The linear range of lead were 0～80.00 μg·L^-1（r=0.999 6） with recovery of 95%～101%（RSD ranged from 0% to 5.00%,n=10）.The linear range of cadmium were 0～7.000 μg·L^-1（r=0.998 2） with recovery of 98%～103%（RSD ranged from 1.00% to 5.00%,n=10）.CONCLUSION：The method is simple,accurate,convenient and sensitive and the results are satisfactory.

关 键 词：石墨炉原子吸收光谱法 土牛膝 铅 镉 含量 产地 

分 类 号：R282.1[医药卫生—中药学] R927.2[医药卫生—中医学]