Medicinal Plant

2010, v.1(10) 1-4

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Exploration of the Source of Heavy Metal Elements Accumulated in a Famous-region Drug RHIZOMA CHUANXIONG in Sichuan Province
Exploration of the Source of Heavy Metal Elements Accumulated in a Famous-region Drug RHIZOMA CHUANXIONG in Sichuan Province

摘要(Abstract):

[Objective] This study was to detect and analyze the contents of heavy metals accumulated in RHIZOMA CHUANXIONG materials sampled from Xudu Town of Dujiangyan City and in the soils from the sampling plots,so as to find out the source of heavy metal elements accumulated in RHIZOMA CHUANXIONG by comparing the content differences between the drug materials and soils tested.[Methods] Atomic absorption spectroscopy(AAS) was employed to measure the contents of Cu,Pb and Cd in RHIZOMA CHUANXIONG samples and soil.[Results] In the soil samples,the contents of Cu and Pb both accorded with China's National Second Class Standard for Soil Environmental Quality,while the content of Cd exceeded the average soil background value of China.The content of Cu in RHIZOMA CHUANXIONG samples was up to the National GAP Medicinal Plants Standard while the Pb content was slightly over the standard.The contents of Cu and Pb were both lower than that in soil;the content of Cd in RHIZOMA CHUANXIONG was higher than that in soil and seriously far beyond the GAP Medicinal Plants Standard.[Conclusion] The high content of Cd in plant samples is correlated with the higher Cd content in soil,suggesting that RHIZOMA CHUANXIONG has an enrichment effect to Cd in soil.

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基金项目(Foundation): Supported by Basic Research Program on Chinese Medicine and Drugs from Administration of Traditional Chinese Medicine of Sichuan(2007X505)

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