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

作　　者：费坤 程雪梅 尹逊莉 陈浩伟 白晋涛 任兆玉 

机构地区：[1]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

出　　处：《Chinese Optics Letters》2014年第12期121-125,共5页中国光学快报（英文版）

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)

摘　　要：In trace Li analysis with degenerate four-wave mixing （DFWM） method, acid anions and major metallic elements are dominant interferences in Li-eontaining 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, SO4^2, PO^34-, Cl-, and Ca can cause significant suppression, and NO3-, Mg, Ba, Sr, and Na almost have no effects. Finally, we use HaBOa to eliminate the depressive effects of chlorides on Li DFWM signal. The result is also of reference in other trace elements analysis with DFWM.In trace Li analysis with degenerate four-wave mixing （DFWM） method, acid anions and major metallic elements are dominant interferences in Li-eontaining 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, SO4^2, PO^34-, Cl-, and Ca can cause significant suppression, and NO3-, Mg, Ba, Sr, and Na almost have no effects. Finally, we use HaBOa to eliminate the depressive effects of chlorides on Li DFWM signal. The result is also of reference in other trace elements analysis with DFWM.

关 键 词：Boric acid Chlorine compounds LITHIUM Metallic compounds Trace analysis Trace elements 

分 类 号：O657.3[理学—分析化学]