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.
出处
《中国药房》
CAS
CSCD
北大核心
2010年第27期2541-2543,共3页
China Pharmacy
基金
湖南省科技计划项目(06FJ4099)
关键词
石墨炉原子吸收光谱法
土牛膝
铅
镉
含量
产地
Graphite furnace atomic absorption spectrometry
Achyranthes？bidentata
Lead
Cadmium
Content
Habitats
