雾相反应蒸气发生原子吸收光谱法测定茶叶样品中铜、银和锌
AAS Determination of Copper,Silver and Zinc in Tea with Nebulous Phase Reaction-Vapour Generation
摘 要
将自制的双通道雾化器组装于蒸气发生-原子吸收光谱仪的系统中,应用此双通道雾化器,使处于蒸气状态的反应物的反应效率得到提高,而在传输过程中的损失得以降低.将此改进后的蒸气发生原子吸收光谱法应用于测定茶叶中铜、银及锌的含量,其检出限(S/N=3)依次为3.6,1.6及0.18 μg·L-1.以3个茶叶样品为基体对铜、银及锌的回收进行了试验,所得回收率在93%~105%之间.
原子吸收光谱法
雾相反应
铜
银
锌
茶叶
Vapour generation
Atomic absorption spectrometry
Nebulous phase reaction
Copper
Silver
Zinc
Tea
Abstract
A self-made bi-channel nebulizer was used in combination with instrumentation of vapour-generation atomic absorption spectrometry (VG-AAS).Raising of reaction efficiency and lowering of loss during transmission of the hydrides in vapour state were achieved by using this bi-channel nebulizer.In the application of the proposed method to determination of copper,silver and zinc in tea,detection limits (S/N=3) found were 3.6,1.6 and 0.18 μg·L-1 respectively.Tests for recovery were made with 3 tea samples,giving values of recovery in the range from 93% to 105%.
中图分类号 O657.3
所属栏目 试验与研究
基金项目 国家自然科学基金资助项目(No.20675074)
收稿日期 2007/6/18
修改稿日期
网络出版日期
作者单位点击查看
备注张世娟(1981-),女,山东日照人,硕士研究生,研究方向为原子光谱分析.
引用该论文: ZHANG Shi-juan,GAN Wu-er. AAS Determination of Copper,Silver and Zinc in Tea with Nebulous Phase Reaction-Vapour Generation[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2008, 44(8): 705～707
张世娟,淦五二. 雾相反应蒸气发生原子吸收光谱法测定茶叶样品中铜、银和锌[J]. 理化检验－化学分册, 2008, 44(8): 705～707
被引情况:
【1】完玲中,淦五二,姜宪娟,杨清华,邓云, "蒸气发生-原子吸收光谱法测定催化剂中痕量钯",理化检验－化学分册 46, 724-727(2010)
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参考文献
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【8】Sun H W,Suo R.Enhancement reagents for simultaneous vapor generation of zinc and cadmium with intermittent flow system coupled to atomic fluorescence spectrometry[J].Anal Chim Acta,2004,509(1):71-76．
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