Flame Atomic Absorption Spectrometric Determination of Copper and Lead in Beer after Preconcentration Using a Rapid Coprecipitation Technique with 8-Oxyquinoline
SU Yao-dong,HAO Bing-bing*,QIN Li-jun, GAN Li-hua
Department of Chemistry，Tongji University，Shanghai 200092, China
Abstract：A method was proposed for the determination of trace copper and lead in beer with flame atomic absorption spectrometry after preconcentration of copper and lead by rapid coprecipitation technique with 8-oxyquinoline-Mg(Ⅱ) using manganese as an internal standard at pH 9. The standard addition recovery of lead is between 97.6%-103.0%. The detection limit is 6.28×10-3 μg·mL-1 for copper and 2.26×10-2 μg·mL-1 for lead when the sample volume is 100 mL. The effect of matrix can be overcome by the method and the results are satisfying. The method proposed here is rapid and has good reproducibility.
苏耀东,郝冰冰*,秦立俊,甘礼华. 8-羟基喹啉快速共沉淀分离富集原子吸收光谱法测定啤酒中的Cu和Pb[J]. 光谱学与光谱分析, 2007, 27(03): 589-591.
SU Yao-dong,HAO Bing-bing*,QIN Li-jun, GAN Li-hua. Flame Atomic Absorption Spectrometric Determination of Copper and Lead in Beer after Preconcentration Using a Rapid Coprecipitation Technique with 8-Oxyquinoline. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(03): 589-591.
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