Cold vapor generation of Zn based on dielectric barrier discharge induced plasma chemical process for the determination of water samples by atomic fluorescence spectrometry
Cold vapor generation of Zn based on dielectric barrier discharge induced plasma chemical process for the determination of water samples by atomic fluorescence spectrometry
复制标题
基于介电势垒放电诱导等离子体化学过程的冷蒸气产生锌用于原子荧光光谱法测定水样
DOI：
10.1007/s00216-014-7911-8
复制
发表时间：
2014-05
影响因子：
4.3
通讯作者：
Hu, Shenghong
中科院分区：
文献类型：
--
作者：
Peng, Huan;Liu, Zhifu;Guo, Wei;Hu, Shenghong
提出了一种利用介质阻挡放电(DBD)产生等离子体化学气相生成锌的新方法。在氢气存在下，溶解的锌离子很容易被DBD等离子体转化为挥发性物质，然后用冷原子荧光光谱仪(AFS)检测生成的锌蒸气。它取消了不稳定的四氢硼酸盐还原剂和高纯度酸的使用。对DBD等离子体-CVG系统的操作条件进行了优化，以实现高效的锌蒸气产生。此外，还考察了共存离子对锌的等离子体-CVG的可能干扰。当L−1浓度为1 mg时，大部分被测离子无明显的基质干扰，而当离子浓度为10 mg L−1时，锌蒸气发生效率显著降低。在最佳条件下，对20μ−g Lμ1标准样品的检出限为0.2μg L−1，重复性好(相对标准偏差=2.6%，n=11)。通过模拟天然水样GSB07-1184-2000标准物质中锌的分析，验证了方法的准确性，测定结果与参考值吻合较好。该方法已成功应用于长江水、武汉东湖水和武汉自来水中锌的测定。它为锌提供了一种替代的绿色蒸汽产生方法。
A new plasma chemical vapor generation (plasma-CVG) method for Zn was developed by dielectric barrier discharge (DBD). The dissolved Zn ions was readily converted to volatile species by DBD plasma in the presence of hydrogen and then, the generated Zn vapor, Zn 0, was detected by cold vapor atomic fluorescence spectrometry (AFS). It eliminated the use of unstable tetrahydroborate-reducing reagent and high-purity acids. The operating conditions for the DBD plasma-CVG system were optimized for the efficient vapor generation of Zn. In addition, possible interferences from coexisting ions on the plasma-CVG of Zn were also examined. No appreciable matrix interference was found from most of the examined ions at concentration of 1 mg L− 1. However, severe depression of the Zn vapor generation efficiency was observed in the presence of ions at 10 mg L− 1. Under the optimal conditions, the limit of detection (LOD) was calculated to be 0.2 μg L− 1; good repeatability (relative standard deviation (RSD)= 2.6%, n= 11) was obtained for a 20 Zn μg L− 1 standard. The accuracy of the proposed method was validated though analysis of Zn in reference material of simulated natural water sample GSB07-1184-2000 and the determined result was in good agreement with the reference value. The proposed method has also been successfully applied to the determination of Zn in Changjiang River water, Wuhan East Lake water, and Wuhan tap water samples. It provides an alternative green vapor generation method for Zn.
登录
查看更多内容
室温离子液体和吡咯烷二硫代氨基甲酸铵协同增强化学气相发生-火焰原子吸收光谱法测定锌
影响因子：
3.1
作者：
Kong Jinli;Zhou Neng;Cui Rongrong;Li Xiaoli
通讯作者：
Li Xiaoli
影响因子：
7.4
作者：
Yong-Lai Feng;R. Sturgeon;J. Lam
通讯作者：
Yong-Lai Feng;R. Sturgeon;J. Lam
影响因子：
7.4
作者：
Zhenli Zhu;G. C. Chan;S. Ray;Xinrong Zhang;G. Hieftje
通讯作者：
Zhenli Zhu;G. C. Chan;S. Ray;Xinrong Zhang;G. Hieftje
影响因子：
6.2
作者：
K. Motojima;K. Tatenuma;Z. Yoshida;H. Takeishi;E. Akatsu
通讯作者：
K. Motojima;K. Tatenuma;Z. Yoshida;H. Takeishi;E. Akatsu
影响因子：
7.4
作者：
Luna;Sturgeon;de Campos RC
通讯作者：
Luna;Sturgeon;de Campos RC