原子吸收法测定烘干与硫熏金银花中的重金属含量

目的： 本文考察烘干与硫熏两种加工方法金银花中重金属含量之间的差别。 方法： 收集不同产地的新鲜金银花，分别运用烘干与硫熏两种加工方法对其进行加工处理，并以原子吸收光谱法测定各样品中的铅、镉、砷、汞、铜5种重金属的含量。 结果： 分别测定10批不同产地烘干与硫熏金银花中铅、镉、砷、汞、铜的含量，并计算加样回收率，其平均加样回收率在96.65%~98.97%。 结论： 烘干和硫熏两种加工方法中测定的铅、镉、砷、汞、铜的含量均未超出限量范围。且经过对比发现经过硫熏以后的金银花中Pb的含量明显降低，As的含量略有升高，而Hg的含量明显升高，Cu，Cd的含量基本保持不变。

Determination of Heavy Metals in Sulphur Fumigated and Drying Lonicera japonica from Different Areas by AAS

Objective: To investigate the content of heavy metals in Sulphur fumigated and Drying Lonicera japonica Thunb. Method: The sample is prepared via microwave digestion, the processing using the method of sulphur fumigated and drying, using atomic absorption spectroscopy to determine the content of Pb,Cd,As,Hg,Cu in sulphur fumigated and drying L. japonica. Result: The content of heavy metal in 10 batches of sulphur fumigated and drying Lonicera japonica.from different areas ware determined. The recovery rate was between 96.65% and 98.97%. Conclusion: The content of Pb, Cd, As, Hg and Cu in all samples were within the limitation, the content of Pb in the sample to be low after sulphur fumigated, the content of Hg elevates, the content of Hg elevates obviously, Cu and Cd maintains invariable basically.