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combustion-hydrolysis-IC Determination of Chloride in lithium cobalt oxide |
Received:December 10, 2014 Revised:December 31, 2014 |
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DOI: |
KeyWord:IC; combustion-hydrolysis; lithium cobalt oxide;chloride |
Author | Institution |
Yang Zhao-hong |
桂林理工大学化学与生物工程学院 |
Li Hua-chang |
北京矿冶研究总院 |
Shi Ye-hong |
北京矿冶研究总院 |
Yu Li |
北京矿冶研究总院 |
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Abstract: |
In order to determine trace amounts of chloride in lithium cobalt oxide accurately,a determination method by using ion chromatography combined with pretreating the samples with combustion-hydrolysis was established.The sample hydrolysis reaction with oxygen and steam at 1100 ℃ high temperature.generate hydrogen chloride out with the carrier gas, condensation and receive,Used ion chromatography to determine the content 4.5 mmol/ L NaHCO3 and 4.5 mmol/ L NaCO3 mixture as the eluent, passed SH - AG - 1 to protect column and SH - AC - 1 separation column to separated and detected.The chloride ion in 0.05-5.00 mg/L concentration range, We found the concentration had a linear relation with the peak area, the detection limit (3s) was 0.010 mg/L.Giving values of recovery in ranges of 92.0 %-96.0 % .RSD’s(n=11)in ranges of 2.97 %-5.31 % .This method can accurate determination trace amounts of chlorine in lithium cobalt oxide. |
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