Enrichment of activated carbon adsorption-flame atomic absorption spectrometric determination of trace lead in beverages and copper

Objective:To improve flame atomic absorption spectrophotometric determination of lead and copper beverage sensitivity.Methods:The use of activated carbon adsorption in water phase can be characterized by elements of trace heavy metals,activated carbon absorption by the sample after elution of a certain acidity,samples were enriched not only by post-adsorption with the separation of interfering substances,direct flame atomic determination of absorption.Results:The lower limit of detection: Pb 0.05 mg/L,Cu 0.005 mg/L,the recovery rate Pb 88.0%~102.0%,Cu 92.0%~106.0%,to meet the analysis requirements.Conclusion:The use of activated carbon adsorption enrichment-flame atomic absorption spectrometric determination of trace lead in beverages and copper.