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Effects of acid anions, major metallic elements, and chlorides on Li detection by DFWM in graphite furnace

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【Author】 Kun Fei;Xuemei Cheng;Xunli Yin;Haowei Chen;Jintao Bai;Zhaoyu Ren;State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, National Photoelectric Technology, and Functional Materials and Application of Science and Technology International Cooperation Center, Northwest University;

【机构】 State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, National Photoelectric Technology, and Functional Materials and Application of Science and Technology International Cooperation Center, Northwest University；

【摘要】 In trace Li analysis with degenerate four-wave mixing(DFWM) method, acid anions and major metallic elements are dominant interferences in Li-containing samples. To better use DFWM technique to analyze trace Li in actual samples, we study their effects on Li DFWM signal intensity. It is found that K, Cs, and Ni can enhance the Li DFWM signal, SO2-4,PO3-4, Cl-, and Ca can cause significant suppression, and NO3-, Mg, Ba, Sr, and Na almost have no effects. Finally, we use H3BO3 to eliminate the depressive effects of chlorides on Li DFWM signal. The result is also of reference in other trace elements analysis with DFWM.更多还原

【Abstract】 In trace Li analysis with degenerate four-wave mixing(DFWM) method, acid anions and major metallic elements are dominant interferences in Li-containing samples. To better use DFWM technique to analyze trace Li in actual samples, we study their effects on Li DFWM signal intensity. It is found that K, Cs, and Ni can enhance the Li DFWM signal, SO2-4,PO3-4, Cl-, and Ca can cause significant suppression, and NO3-, Mg, Ba, Sr, and Na almost have no effects. Finally, we use H3BO3 to eliminate the depressive effects of chlorides on Li DFWM signal. The result is also of reference in other trace elements analysis with DFWM.更多还原

【关键词】 metallic； graphite； suppression； eliminate； degenerate； mixing； matching； furnace； normalized； decompose；

【基金】 supported by the National “973” Plan Preliminary Study Special of China(Nos.2012CB723407 and 2010CB434811);the Northwest University Science Foundation(No.13NW12);the Shaanxi Provincial Department of Education Project(No.12JK0599)

【文献出处】 Chinese Optics Letters ,中国光学快报(英文版) , 编辑部邮箱 ,2014年12期

【分类号】O657.3
【下载频次】27

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