Lithium elements in the series of batteries-used lithium salts were determined by flame emission spectrophotometry with optimizing instrument measuring conditions and researching impact on the determination of media and coexisting elements in the sample. Experimental results showed that the main elements and a small amount of coexisting elements did not interfere with the determination of lithium, and 1% — 5% of hydrochloric acid and nitric acid had no effect on the determination of 2mg/100mL lithium. The results showed that this measurement method recovery was 99. 80% -100. 9%, the standard deviation was less than 0.14 %,the relative standard deviation was less than 2.11%, And the method met the requirements of the determination of lithium in lithium cobalt oxide and lithium nickelate.%采用火焰发射光度法测定电池用系列锂盐中的锂元素,优化了仪器测定条件,试验了介质对测定的影响及样品中共存元素对测定的影响.试验发现:主体元素与少量共存元素不干扰锂的测定,1％～5％的盐酸及硝酸对2mg/100mL锂的测定没有影响.本法测定回收率在99.80％～100.9％之间,标准偏差不大于0.14％,相对标准偏差不大于2.11％.满足钴酸锂及镍酸锂中锂的测定要求.
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