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应用YAE—2原子吸收解析仪自动萃取食品中的镉.结果表明,镉在PH8~9的氨缓冲溶液存在的条件下被EDTA富集柱富集,用 1mol/L硝酸溶液作洗脱载液,测定食品镉含量在 100~2000μg/kg之间时,线性关系成立.标准差为0.0042 mg/kg,均值为 0.217 mg/kg,变异系数 1.93%.检出限为 5 μg/L.本方法适用于各种食品中镉的分析,是一种在线高速解吸的分离分析技术.
Application of YAE-2 atomic absorption spectrometry automatic extraction of cadmium in food. The results showed that cadmium was enriched by EDTA-enriched column in the presence of ammonia buffer solution of pH8-9. When 1mol / L nitric acid solution was used as elution carrier and the content of cadmium in food was between 100-2000μg / kg, The linear relationship is established. The standard deviation was 0.0042 mg / kg with a mean of 0.217 mg / kg and a coefficient of variation of 1.93%. The detection limit is 5 μg / L. The method is suitable for the analysis of cadmium in various foods and is an online high-speed desorption separation and analysis technique.