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A novel magnetic method using polystyrene modified magnetic nanoparticles to perform thermo-headspace extraction was successfully developed for extraction and preconcentration of volatile organic components in dry Traditional Chinese Medicine (TCM) based on gas chromatography-ion trap/mass spectrometry with a ChromatoProbe direct sample introduction device. The dried fruit of Amomum testaceum Ridl...
A tetra(pyrid-2-yl)-pyrazine-bridged cyclometalated diosmium complex 1(PF 6 ) 2 with two distal redox-active organic amine substituents has been synthesized and characterized. This complex displays four consecutive and separated anodic redox waves at +0.24, +0.38, +0.64, and +0.71V vs. Ag/AgCl. Upon stepwise oxidation, four-step absorption spectral changes in the visible to near-infrared...
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