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半夏中铜和锰的原子吸收光谱直接测定方法
引用本文:王元忠,李涛,方波,方向京,苏为耿,张全英.半夏中铜和锰的原子吸收光谱直接测定方法[J].光谱学与光谱分析,2008,28(3):690-692.
作者姓名:王元忠  李涛  方波  方向京  苏为耿  张全英
作者单位:1. 云南大学生命科学学院生态遗传学实验室,云南,昆明,650091
2. 玉溪师范学院地理科学系,云南,玉溪,653100
3. 云南大学生命科学学院生态遗传学实验室,云南,昆明,650091;云南省林业科学院,云南,昆明,650204
4. 云南省林业科学院,云南,昆明,650204
摘    要:报道了用次灵敏线原子吸收光谱法直接测定半夏中高含量Cu和Mn的分析方法;解决了以往高Cu和Mn半夏测定中,由于称样量小、稀释倍数过大所引起的分析误差;Cu和Mn的线性范围分别为0~25mg·L-1和0~12mg·L-1,相对标准偏差分别为0·42%和0·66%,加标回收率分别为96%~103%和97%~102%;该方法简便、快速、实用性强,已广泛应用于实际半夏样品的分析,获得满意结果。

关 键 词:次灵敏线  原子吸收光谱法  半夏  Cu和Mn
文章编号:1000-0593(2008)03-0690-03
修稿时间:2006年11月16

Direct Determination of Copper and Manganese in Pinellia Ternata by Atomic Absorption Spectrometry Using Secondary Sensitive Wavelength
WANG Yuan-zhong,LI Tao,FANG Bo,FANG Xiang-jing,SU Wei-geng,ZHANG Quan-ying.Direct Determination of Copper and Manganese in Pinellia Ternata by Atomic Absorption Spectrometry Using Secondary Sensitive Wavelength[J].Spectroscopy and Spectral Analysis,2008,28(3):690-692.
Authors:WANG Yuan-zhong  LI Tao  FANG Bo  FANG Xiang-jing  SU Wei-geng  ZHANG Quan-ying
Institution:Laboratory of Ecological Genetics, College of Life Science, Yunnan University, Kunming 650091, China.
Abstract: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.
Keywords:Secondary sensitive wavelength  Atomic absorption spectrometry  Pinellia ternata  Copper and Manganese
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