Residual Characteristics and Pollutional Risk Assessment of Heavy Metal in Ningxia Original Radix Astragali(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Residual Characteristics and Pollutional Risk Assessment of Heavy Metal in Ningxia Original Radix Astragali

Author(s):: LI Caihong; WANG Caiyan; WANG Xiaojing; MA Yun; (Supervision and Testing Center for Lycium Quality，Ministry of Agriculture，Yinchuan，Ningxia 750002)

Keywords:: Radix Astragali; heavy metal; residual characteristics; correlated relationship; pollutional risk assessment

Abstract:: Taking Radix Astragali in different region of Ningxia and planting soil as the experimental material，lead，cadmium，arsenic，mercury，copper five kinds of heavy metal element content were determined by using atomic abomic absorption，the effect of soil heavy metals on heavy metal residue characteristics of astragalus membranaceus and pollution risk were studied.The results showed that five kinds of heavy metal were detected to varying degrees in Radix Astragali，but the content was very low；it was significantly correlated relationship between Cd and Cu content in the Radix Astragali.It was extremely significant or significant correlation between Cu and Pb,As，Cd content in the soil，between As and Pb，Cd content there was a very significant or significant correlation relationship in the soil；Cu content was significant correlation between Radix Astragali and soil.Radix Astragali was pollution-free production in Ningxia using the single pollution index and comprehensive pollution index evaluate heavy metal pollution risk.

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Last Update: 2017-01-04