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湿法消解-火焰原子吸收法测定食品纸塑包装材料中铅镉含量 被引量:4

Determination of Lead and Cadmium Content in the Food Paper and Plastic Packaging Materials with Wet Digestion-flame Atomic Absorption Spectrometry
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摘要 本文建立了湿法消解纸塑包装材料,火焰原子吸收法测定其中铅镉含量的方法。方法检出限为铅0.029μg/mL,相对标准偏差为1.12%,回收率在93.77%-96.14%;镉的检出限为0.0056μg/mL,相对标准偏差为1.93%,回收率在91.92%~96.37%,该方法具有检出限低,准确度高,精密度好等优点。 A method for determining lead and cadmium content in the paper and plastic packaging materials with wet digestion-flame atomic absorption spectrometry was developed. The detection limit and relative standard deviations of lead were 0.029μg/mL and 1.12%, the recoveries of lead ranged from 93.77% to 96.14%; The detection limit and rela-tive standard deviations of cadmium were 0.0056 μg/mL and 1.93%, the recoveries of cadmium ranged from 91.92% to 96.37%. The method has the advantages of low detection limit, high accuracy and good precision.
出处 《中国食品学报》 EI CAS CSCD 北大核心 2013年第7期195-199,共5页 Journal of Chinese Institute Of Food Science and Technology
基金 2013年湖南省教育厅科研项目(No.13B155)
关键词 纸塑包装材料 湿法消解 火焰原子吸收法 paper and plastic packaging materials lead cadmium wet digestion flame atomic absorption spec-trometry
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