Determination of CaO in Baotou Columbite and Steel Cinder with Flame Atomic Absorption Spectrometry
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摘要: 用火焰原子吸收法測定了包頭鈮精礦和冶金爐渣中氧化鈣.選用鹽酸介質,鑭作釋放劑,用EDTA+三乙醇胺消除干擾.比較了酸溶及堿熔試樣處理方法,測定了酸不溶殘渣中氧化鈣.試驗結果為:回收率100%~102%,RS.D<2%.Abstract: The determination of CaO content in columbite and steel cinder with flame atomic absorption spectrometry is studied. EDTA+TEA is used to eliminate the interferences, in HCl media, with La as releaser.The methods of sample treatment and the CaO in remainder undissolved in acids have been conducted. The result of the determina-determination and recovery of CaO shows that the ho of recovery is 100%~102 %, R.S.D<2 %.
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Key words:
- atomic absorption spectrometry /
- CaO /
- columbite /
- steel cinder
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