The content of microelements are measured by means of atom absorption.The result shows that the content of microelement Mn in kudingcha is rich.It is a kind of non polluted and nature plant.It is medicinal and edible,...The content of microelements are measured by means of atom absorption.The result shows that the content of microelement Mn in kudingcha is rich.It is a kind of non polluted and nature plant.It is medicinal and edible,so it is very worth exploiting.展开更多
Primary speciation of eight elements (Cu,Zn,Mn,Fe,Ca,Mg,Sr and Ni)in ligusticum wallichii Franch was studied by atomic absorption spectrometry.The contents of eight elements in six samples were determined,and the spec...Primary speciation of eight elements (Cu,Zn,Mn,Fe,Ca,Mg,Sr and Ni)in ligusticum wallichii Franch was studied by atomic absorption spectrometry.The contents of eight elements in six samples were determined,and the species distributions of the primary speciation analysis,such as extractive rate and immerse-residue ratio,were also calculated.The results showed that the concentration of eight element in the residue was high,and extractive rate of Ni and Mg was higher than other elements.展开更多
The contents of As,Cd,Hg and Pb in 27 Chinese medicinal herbs were determined by ICP-MS with microwave assisted digestion.Cluster analysis was applied to study the distribution characteristics of As,Cd,Hg and Pb in di...The contents of As,Cd,Hg and Pb in 27 Chinese medicinal herbs were determined by ICP-MS with microwave assisted digestion.Cluster analysis was applied to study the distribution characteristics of As,Cd,Hg and Pb in different kinds of Chinese medical herbs from different sources.The result of cluster analysis showed that the contents of As,Cd,Hg and Pb from different sources were significantly different.It is helpful in the quality control and source identification of Chinese medicinal herbs.展开更多
文摘The content of microelements are measured by means of atom absorption.The result shows that the content of microelement Mn in kudingcha is rich.It is a kind of non polluted and nature plant.It is medicinal and edible,so it is very worth exploiting.
文摘Primary speciation of eight elements (Cu,Zn,Mn,Fe,Ca,Mg,Sr and Ni)in ligusticum wallichii Franch was studied by atomic absorption spectrometry.The contents of eight elements in six samples were determined,and the species distributions of the primary speciation analysis,such as extractive rate and immerse-residue ratio,were also calculated.The results showed that the concentration of eight element in the residue was high,and extractive rate of Ni and Mg was higher than other elements.
文摘The contents of As,Cd,Hg and Pb in 27 Chinese medicinal herbs were determined by ICP-MS with microwave assisted digestion.Cluster analysis was applied to study the distribution characteristics of As,Cd,Hg and Pb in different kinds of Chinese medical herbs from different sources.The result of cluster analysis showed that the contents of As,Cd,Hg and Pb from different sources were significantly different.It is helpful in the quality control and source identification of Chinese medicinal herbs.
