Determination of Trace Elements in Traditional Chinese Medicine HERBA ERIGERONTIS

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[Objective] The research aimed to determine the contents of trace elements in traditional Chinese medicine HERBA ERIGERONTIS,so as to provide a basis for the development and application of HERBA ERIGERONTIS.[Method] Pretreated by HNO3-HClO4 mixed acid in 5:1 volume ratio as digestive juice,the contents of 10 trace elements including K,Ca,Cu,Na,Mg,Mn,Fe,Zn,Pb and Cd in HERBA ERIGERONTIS were determined by inductively coupled plasma atomic emission spectrometry(ICP-AES).[Result] HERBA ERIGERONTIS was richest in K with the content of 1 128.40(md) μg/g.Cd and Pb were not detected.The other 7 trace elements decreased according to content in the following order Na,Ca,Mg,Zn,Fe,Cu and Mn,which were 947.30,779.20,557.10,109.80,66.40,33.30 and 7.27(md) μg/g respectively.[Conclusion] The method used in this study was accurate and rapid,which could provide a theoretical basis for the study on internal relations between trace elements in HERBA ERIGERONTIS and its efficacy,in addition to for better development and utilization of HERBA ERIGERONTIS. [Objective] The research aimed to determine the contents of trace elements in traditional Chinese medicine HERBA ERIGERONTIS, so as to provide a basis for the development and application of HERBA ERIGERONTIS. [Method] Pretreated by HNO3-HClO4 mixed acid in 5: 1 volume ratio as digestive juice, the contents of 10 trace elements including K, Ca, Cu, Na, Mg, Mn, Fe, Zn, Pb and Cd in HERBA ERIGERONTIS were determined by inductively coupled plasma atomic emission spectrometry (ICP- AES) Result] HERBA ERIGERONTIS was richest in K with the content of 1 128.40 (md) μg / g.Cd and Pb were not detected. The other 7 trace elements decreased according to content in the following order Na, Ca, Mg, Zn, Fe , Cu and Mn, which were 947.30,779.20,557.10,109.80,66.40,33.30 and 7.27 (md) μg / g respectively. [Conclusion] The method used in this study was accurate and rapid, which could provide a theoretical basis for the study on internal relations between trace elements in HERBA ERIGERONTIS and its efficacy, in addition to for bette r development and utilization of HERBA ERIGERONTIS.
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