石墨炉AAS法分析金银花中镉及其分布规律

Analysis on distribution characteristics of cadmium residues in honeysuckle by GF-AAS

目的:研究镉在金银花中的分布规律情况。方法:样品采用高压微波消解,原子吸收石墨炉法检测。结果:镉在金银花中的含量分布规律为:茎>根>花>叶>生长土壤,多年生金银花中镉含量更高。结论:金银花及其根茎叶对土壤中的镉有一定的富集作用,且镉在金银花中的分布规律与其它一些报道的植物有差异,具体原因有待进一步研究。

Objective：To investigate cadmium distribution in flowers,leaves,stems,roots and corresponding soil of honeysuckle.Methods： The soil sample was digested with the mixture of hydrochloric acid and nitric acid（3∶ 1）,plant sample was digested with nitric acid,and then detected by GF-AAS.Results： Distribution of cadmium contents in honeysuckle and corresponding soil was stems roots flowersleaves soil,and the contents of cadmium in perennial honeysuckle were higher.Conclusion： Honeysuckle has enrichment ability for Cd from soil,but its distribution law differs from other reported plants.The reasons needs further research.