Determination of Calcium in Baotou Iron Ores and Its Slagsby AAS with Air-Acetylene Flame
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摘要: 研究了空氣-乙炔火焰原子吸收測定包頭鐵礦及其冶煉渣中鈣時的干擾及其消除方法。采用混酸(硝酸+氫氟酸+硫酸;硝酸+鹽酸+氫氟酸+磷酸+硫酸)分解和抗壞血酸與La3+(或+Nb(V))聯合消干擾劑,有效地消除了共存組分的干擾,建立了操作方便、結果可靠的分析方法。
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關鍵詞:
- 鈣 /
- 空氣-乙炔火焰原子吸收法 /
- 包頭鐵礦及其冶煉渣 /
- 聯合干擾抑制劑(抗壞血酸+La3++Nb(V))
Abstract: calcium in Baotou iron ores and its slags by AAS with air-acetylene flame,interferences and its eliminated method were investigated. The samples can be decomposed by composited acids, and interferences of coexist components can be effectively eliminated using the composited inhibitors of interferences (ascorbic acid +lanthanum +niobium). The simple method for determination of calcium was established with satisfactory results. -
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