CAJ | 학술논문

采用空气-乙炔火焰原子吸收光谱法测定浓海水中微量金属锂离子时,干扰主要来自浓海水中共存的高浓度的阳离子。探讨了共存的主要阳离子对锂离子测定的影响,并分析了消除高浓度阳离子干扰的方法。结果表明：Ca2＋和Mg2＋是主要干扰元素,可以采用标准加入法消除共存的高浓度阳离子的干扰;锂在0.13～1.92 mg/L范围内线性关系良好,平均回收率为99.62%。
채용공기-을결화염원자흡수광보법측정농해수중미량금속리리자시,간우주요래자농해수중공존적고농도적양리자。탐토료공존적주요양리자대리리자측정적영향,병분석료소제고농도양리자간우적방법。결과표명：Ca2＋화Mg2＋시주요간우원소,가이채용표준가입법소제공존적고농도양리자적간우;리재0.13～1.92 mg/L범위내선성관계량호,평균회수솔위99.62%。
The trace Li^＋ in concentrated brine was determined by air-acetylene flame atomic absorption spectrometry at the wave length of 670.8 nm. The disturbance from coexisting cations on the lithium （1＋） was investigated. The disturbance was from high concentration ions of Ca^2＋ and Mg^2＋. The ions of Na^＋ and K^＋ had little affection. The standard addition method is an effective way to eliminate the disturbance of main cations. The experimental results indicated that the linear range for lithium was 0.13-1.92 mg/L and average recovery was 99.62%.