Study on determination of K、Na、Mg、P、Cu、Fe、Mn、Zn in fetal cerebra by microware dissolution and inductively couple plasma-AES spectrometry

  Objective   To establish the method for the determination of biological essential elements K、Na、Mg、P、Cu、Fe、Mn、Zn in Fetal Cerebra.

  Methods   The samples were digested by closed-vessel microwave HNO₃+H₂O₂ dissolution system.The solution was directly analyzed by ICP-AES for the determination of K、Na、Mg、P、Cu、Fe、Mn、Zn.

  Results   The detection limits of each element was between 0.007 mg/L and 0.1 mg/L.Standard linear comelationr≥0.999.Standard deviations were below 2%.Recoveries of spiked saniples were of the range 93.7% and 116.1%.Two standard reference materials nanlely "pig Liver GBW08551" and "Human Hair GBW07601" were used an quality control standards and the analysis results conformed well to the certified values.

  Conclusion   The method was proved to be simple, rapid, accurate and reliable.And it has been applied to the analysis of the sample with satisfactory results.