祁紫菀中5种重金属元素富集特性及净化方法研究

doi:10.3969/j.issn.1674-490X.2022.06.008

医学研究与教育 ›› 2022, Vol. 39 ›› Issue (6): 44-52.DOI: 10.3969/j.issn.1674-490X.2022.06.008

祁紫菀中5种重金属元素富集特性及净化方法研究

马晓莉¹,梁翠云²,王虎²,张逸²

1.河北大学护理学院, 河北保定071000;
2.河北大学中医学院, 河北保定071000

收稿日期:2022-10-17 出版日期:2022-12-25 发布日期:2022-12-25
作者简介:马晓莉(1967—),女,河北定兴人,教授,博士,硕士生导师,主要从事中药相关研究。 E-mail: 13722200863@163.com
基金资助:
河北省重点研发计划项目(20322502D)

Received:2022-10-17 Online:2022-12-25 Published:2022-12-25

摘要/Abstract

摘要： 目的研究安国道地药材祁紫菀中5种重金属元素的含量、在不同部位的分布特征、富集规律及净化措施。方法采用GFAAS和ICP-MS测定祁紫菀中重金属含量,分析祁紫菀中重金属污染指数、富集规律和净化效果。结果各重金属的标准曲线分别Hg:Y=0.001 3X+5.028 8×10^-6,As:Y=0.001 6X+1.438 9×10^-4,Cd:Y=0.051 2X+1.32×10^-2,Cu:Y=0.002 3X + 4.3×10^-3,Pb:Y = 0.003 9X+1.00×10^-2;7批紫菀样品中,除1份样品中的Pb超标外,其它均合格,且Cu元素的含量较高;随着生长期的延长,Cu元素的含量逐渐增加,采收期11月份达到最高值,Cd、Pb、As和Hg元素含量呈现先升高,然后逐渐降低的变化趋势;紫菀不同部位对重金属元素的富集能力各不相同,紫菀叶中Cu、Cd、Hg含量均较高,根茎中As含量较高;水洗可明显降低紫菀中重金属含量,降低程度由高到低依次为:Pb、Hg、Cd、As、Cu;各元素单因子污染指数P_i值为Cu>Pb>As>Hg>Cd,综合污染指数P_N值为Pb、Cu>As>Cd、Hg,其中Pb、Cu元素的P_N>0.7。结论祁紫菀对重金属元素Cu的富集能力较强,水洗、去除非药用部位,可以减少紫菀重金属污染。

关键词: 祁紫菀, 重金属元素, 分布特征, 富集规律, 净化措施

Abstract: Objective To study the content, distribution characteristics in different parts, enrichment regularity and purification measures of five heavy metal elements in Asteris Radix. Methods The contents of heavy metals in Asteris Radix were determined by GFAAS and ICP-MS, and the pollution index, enrichment rule and purification effect of heavy metals in Asteris Radix were analyzed. Results The standard curves of heavy metals were Hg:Y=0.001 3X+5.028 8*10^-6; As:Y=0.001 6X+1.438 9*10^-4; Cd:Y=0.051 2X+1.32*10^-2; Cu:Y=0.002 3X+4.3*10^-3;Pb:Y=0.003 9X+1.00*10^-2. Among the 7 batches of Asteris Radix, all samples were qualified except for Pb in a sample, and the content of Cu was higher. With the growth period, the content of Cu increased gradually and reached its maximum in November, while the content of Cd, Pb, As and Hg increased first and then decreased gradually. The enrichment ability of heavy metal elements in different parts of Asteris Radix was different: the contents of Cu, Cd and Hg in leaves were higher, and the content of As in rhizome was higher. Water washing can reduce the content of heavy metals in Aster tataricus. And the decreasing degree were, from highest to lowest: Pb>Hg>Cd>As>Cu. P_i of heavy metal element were, from highest to lowest: Cu>Pb>As>Hg>Cd. P_N of heavy metal element were, from highest to lowest: Pb, Cu > As > Cd, Hg. The P_N of Pb and Cu ware higher than 0.7. Conclusion Asteris Radix has a strong ability to enrich Cu. Washing and removing non-medicinal parts can reduce heavy metal pollution of Asteris Radix.

Key words: Asteris Radix, heavy metal elements, distribution characteristics, enrichment regularity, cleaning measures

中图分类号:

马晓莉,梁翠云,王虎,张逸. 祁紫菀中5种重金属元素富集特性及净化方法研究[J]. 医学研究与教育, 2022, 39(6): 44-52.

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祁紫菀中5种重金属元素富集特性及净化方法研究

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