›› 2012, Vol. 24 ›› Issue (4): 286-289.doi: 10.3969/j.issn.1004-616x.2012.04.011

• 论著 • Previous Articles     Next Articles

Study of content and state of trace elements in Ipomoea stolonifera

ZHENG Fu-chun; CAI Cong-yi; BAI Xue-ting; CHEN Yi-cun   

  1. (1. Department of Pharmacy, First Affiliated Hospital, Shantou University Medical College, Shantou 515041; 2. Department of Pharmacology, Medical College, Shantou University, Shantou 515041, Guangdong, China）
  • Received:2012-03-30 Revised:2012-05-31 Online:2012-07-30 Published:2012-07-30
  • Contact: CHEN Yi-cun

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Abstract: OBJECTIVE: To study the content and state of trace elements in Ipomoea stolonifera (IS). METHODS：Using 0.45 um filter membrane，cation-exchange resin and Amberlite XAD-2 macroreticular resin，trace elements Cu，Zn，Fe，Mn and Mg，in higher concentration in IS，were separated into suspended state，soluble state，dissociative， non-dissociative state，organic state and inorganic state. Then the content of different states was determined by atomic absorption spectrometry. RESULTS：The main elements in IS were Cu， Zn，and Mg. Cu，Mg，Fe，Mn were mostly present in free state. Bound and free states of Zn accounted for 50% each； Mg was mainly present in organic state whilst Mn was present in inorganic state. For Cu，Zn，Fe，organic state and inorganic state was 50% each. CONCLUSION： The trace elements of IS were presented in suspended state and，soluble，stable and unstable，organic and inorganic forms at the same time.

Key words: atomic absorption spectrometry, Ipomoea stolonifera, trace element