Study on of inorganic elements and content ratios of Ca to Mg and Cu to Zn in Acanthopanax brachypus Harms

Objective: To determine inorganic elements in the aerial part of A.brachypus Harms.Methods: Fourteen kinds of inorganic elements(Ca,Na,Al,Mn,Cu,Pb,Zn,Mg,Fe,Ba,Cd,As,Ni and Se) were simultaneously determined by microwave-assisted digestion-ICP-AES,the influence factors(such as digestion power,amount and proportion of digestion solvent,digestion time,etc.) on various elements determination were investigated,the digestion condition was optimized,and the content ratios of Ca/Mg and Cu/Zn were analyzed.Results: A.brachypus Harms contains a variety of inorganic elements which are beneficial to human body.The content ratios of Ca/Mg and Cu/Zn were 1.5487 and 0.9121,respectively.The recoveries were in the range of 97.6%-104.2 % with RSD(n=3) ≤3.9%,and detection limit was less than 0.043 μg·mL-1.Conclusion: The method is simple,rapid,with high sensitivity,good accuracy and can simultaneously determine many elements in A.brachypus Harms.