川芎重金属镉吸收累积规律的初步研究  

Preliminary Research on Cadmium Absorption and Accumulation in Ligusticum Wallichii

作　　者：任敏[1] 李敏[1] 刘德军[1] 魏恒[1] 刘聪[1] 

机构地区：[1]成都中医药大学药学院中药材标准化教育部重点实验室,中药资源系统研究与开发利用省部共建国家重点实验室,成都611137

出　　处：《中国药学杂志》2016年第20期1735-1738,共4页Chinese Pharmaceutical Journal

基　　金：国家工信部2014年中药材扶持项目“绿色川芎规范化生产基地建设与示范推广”资助项目

摘　　要：目的初步研究川芎对重金属镉元素的吸收积累规律,为解决川芎重金属镉超标问题提供科学依据。方法采集四川省内彭州市敖平镇及眉山市永寿镇不同生长周期的川芎植株(分地上部位及地下根茎)及根际土壤,测定其镉元素含量,并计算其富集系数及转运系数。结果川芎以地下根茎镉含量较高,平均比地上部位的高77.21%,川芎不同部位镉的富集系数以及根茎对镉的转移系数均大于0.5,地下根茎中镉元素富集系数比地上部位高64.75%。结论川芎对镉元素具有一定的富集作用和转移能力,且镉元素多富集于药用部位根茎中。OBJECTIVE To study preliminarily the cadmium absorption and accumulation in Ligusticum Wallichii to provide a scientific basis for solving the problem of cadmium excess. METHODS The aboveground and underground parts of Ligusticum Wallichii in different growth periods and the rhizosphere soil were collected from Aoping Town, Pengzhou City and Yongshou Town, Meishan City. The cadmium content was determined, and the enrichment coefficient and transfer coefficient were calculated. RESULTS The average cadmium content in the underground part was 77.21% higher than that in the aboveground part. The cadmium enrichment coefficients and cadmium transfer coefficients of different parts were both greater than 0.5, and the enrichment coefficient of the underground part was 64.75% higher than the aboveground part. CONCLUSION Ligusticum Wallichii has a certain capacity to absorb and transfer cadmium, and most cadmium is enriched in the medicinal roots.

关 键 词：川芎 镉元素 富集系数 转运系数 

分 类 号：R284[医药卫生—中药学]