Speciation of 9 trace elements in a traditional Chinese medicine Long Dan Cao by flow injection-inductively coupled plasma mass spectrometry with a focused microwave assisted extraction system
- 化学化工－已发表论文 
A method based on focused microwave extraction for leaching 9 trace elements in traditional Chinese medicine Long Dan Cao was introduced. An online C-18 enrichment-separation system and an HP4500 ICP mass spectrometer with a flow injection system was established for the separation and determination of inorganic speciation and organic speciation of the selected elements. Orthogonal design was applied for the optimization of microwave leaching conditions. The results showed that the temperature was the major factor for the leaching recoveries.