铬天青S分光光度法测定锡渣中的铝
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摘要
试料用过氧化钠-氢氧化钠熔融,以氢氧化钠溶液浸取,滤除铁、铅、钙的氢氧化物沉淀,在1.2 mol/L盐酸介质中,以锌粉还原分离锡,以乙二胺四乙酸锌溶液掩蔽铁,在pH 6.8乙酸-乙酸铵缓冲溶液中,铝与铬天青S及聚乙烯醇生成紫红色配合物,于分光光度计波长540 nm处测量吸光度。通过试验,该方法的相关性大于0.999,结果准确,试验可行。
The sample with sodium peroxide-fused sodium hydroxide and sodium hydroxide solution, leaching, removing iron, lead, calcium hydroxide precipitation, 1.2 mol/L in hydrochloric acid medium, separation of tin to zinc reduction, with EDTA solution of zinc iron in pH masking, 6.8 acetic acid ammonium acetate buffer solution, aluminum and chrome azurol S and polyvinyl alcohol to form purple red the complexes in the spectrophotometer measuring the absorbance at the wavelength of 540 nm. Through the experiment, the correlation of this method is more than 0.999, the result is accurate and the experiment is feasible.
The sample with sodium peroxide-fused sodium hydroxide and sodium hydroxide solution, leaching, removing iron, lead, calcium hydroxide precipitation, 1.2 mol/L in hydrochloric acid medium, separation of tin to zinc reduction, with EDTA solution of zinc iron in pH masking, 6.8 acetic acid ammonium acetate buffer solution, aluminum and chrome azurol S and polyvinyl alcohol to form purple red the complexes in the spectrophotometer measuring the absorbance at the wavelength of 540 nm. Through the experiment, the correlation of this method is more than 0.999, the result is accurate and the experiment is feasible.
引文
[1]黄永修.铝-铬天青S-曲通X-100分光光度法测定硅酸盐中的氧化铝[J].冶金分析,1984(4):58—60.
[2]高素之等.分光光度法测定钢铁中的铝[M].化学工业出版社,1995,12(4:):54.
[3]陆九韶,谭东立,孙大江,艾桂艳,孙义.间接火焰原子吸收光谱法测定水和废水中铝[J].保护科学,2008,34(3):1110-113.
[2]高素之等.分光光度法测定钢铁中的铝[M].化学工业出版社,1995,12(4:):54.
[3]陆九韶,谭东立,孙大江,艾桂艳,孙义.间接火焰原子吸收光谱法测定水和废水中铝[J].保护科学,2008,34(3):1110-113.