摘要
针对川芎药材重金属镉(Cd)超标现象,开展了川芎中包括重金属在内的12种无机元素积累规律的研究。发现川芎茎叶中大部分无机元素的含量、分配比例以及茎叶对无机元素的吸收能力均在苗期和抽茎期较高,且显著高于根茎。而根茎中大部分元素含量在收获期达到最高,且部分元素的根茎分配比例在收获期高于茎叶。但川芎根茎和茎叶对不同元素吸收能力的相对大小以及对元素的富集作用比较稳定,受生育期和部位影响小。川芎根茎和茎叶对Cd均有富集,茎叶在苗期和抽茎期还对铅(Pb)有富集。川芎茎叶对Pb的吸收能力始终大于根茎,对Cd的吸收能力在收获期小于根茎。随着生长时间的延长,川芎对Cd,Pb的总吸收量减少,但在根茎中的分配比例增加,从而使得川芎根茎中Cd,Pb含量随生长时间的延长而增加。
Aiming at the phenomenon of heavy metal Cd exceeding the standard of Chuanxiong medicinal materials,the accumulation of 12 inorganic elements,including heavy metals,in Ligusticum chuanxiong was studied in this paper. It was found that the contents and distribution of most inorganic elements in the stems and leaves of L. chuanxiong were higher than those in the rhizomes at seedling and shooting stages. The content of most elements in rhizome reached the highest at harvest stage,and the distribution ratio of some elements in rhizome was higher than that in stem and leaf at harvest stage. But rhizome,stem and leaf of L. chuanxiong have relatively stable absorption capacity and enrichment effect on different elements,and are less affected by growth period and position. Rhizomes and stems and leaves of L. chuanxiong were enriched with Cd,and stems and leaves also accumulated Pb at seedling stage and stem stage. The absorption capacity of Pb in stems and leaves of L. chuanxiong was higher than that of rhizomes,and the ability of absorbing Cd was less than that of rhizomes at harvest time. The total uptake of Cd and Pb by L. chuanxiong decreased with the prolongation of growth time,but the proportion of Cd and Pb in rhizome increased,so that the content of Cd and Pb increased with the prolongation of growth time.
作者
周利
赵曼茜
王升
康传志
黄璐琦
郭兰萍
ZHOU Li;ZHAO Man-xi;WANG Sheng;KANG Chuan-zhi;HUANG Lu-qi;GUO Lan-ping(State Key Laboratory Breeding Base of Dao-di Herbs,National Resource Center for Chinese Materia Medica,China Academy of Chinese Medical Sciences,Beijing 100700,China;KangHong Pharmaceutical Group,Chengdu 610036,China)
出处
《中国中药杂志》
CAS
CSCD
北大核心
2019年第9期1793-1798,共6页
China Journal of Chinese Materia Medica
基金
国家药典委员会药品医疗器械审评审批制度改革项目(ZG2016-1)
国家重点研发计划项目(2017YFC1700701)
中国中医科学院重点领域项目(ZZ10-027)
关键词
川芎
CD
无机元素
分布
积累
Ligusticum chuanxiong
norganic elements
distribution
accumulation
