Wang Yuan-Zhong, Li Tao, Fang Bo, Fang Xiang-Jing, Su Wei-Geng, Zhang Quan-Ying
Laboratory of Ecological Genetics, College of Life Science, Yunnan University, Kunming 650091, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2008 Mar;28(3):690-2.
A method for the direct determination of copper and manganese in Pinellia ternata by flame atomic absorption spectrometry with secondary sensitive wavelength was developed. This method can greatly decrease the analytical errors caused by small amount of samples orbig dilution multiple, so its accuracy is better than that with normal atomic absorption spectrometry using sensitive line when determining Cu-rich and Mn-rich Pinellia ternata samples. The detection limits of Cu-rich and Mn-rich are 0-25 mg x (-1) and 0-12 mg x L(-1), the relative standard deviations are 0.42% and 0.66%, and the recovery rates 96%-103% and 97%-102%, respectively. It was found that the method is simple, rapid, useful, accurate and free from the interference of coexistent ions. It has been widely applied to the determination of Pinellia ternata samples with satisfactory results.
建立了一种采用火焰原子吸收光谱法在次灵敏波长下直接测定半夏中铜和锰的方法。该方法可大大减少因样品量少或稀释倍数大而引起的分析误差，因此在测定富铜和富锰半夏样品时，其准确度优于使用灵敏线的常规原子吸收光谱法。富铜和富锰的检出限分别为0 - 25 mg·L⁻¹和0 - 12 mg·L⁻¹，相对标准偏差分别为0.42%和0.66%，回收率分别为96% - 103%和97% - 102%。结果表明该方法简便、快速、实用、准确，且不受共存离子的干扰。已广泛应用于半夏样品的测定，结果令人满意。
