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Chemical constitutes of volatile oil in the rhizomes and radixes of Notopterygium incisum Ting ex H.T. chang (qianghuo in Chinese) from different regions were investigated using comprehensive(More)
Based on a homemade device, gas purge microsyringe extraction (GP-MSE) of crude oil samples was developed for the first time. As a simple, fast, low-cost, sensitive and solvent-saving technique,(More)