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Organic compounds are the important pollution compounds in landfill leachates. For determinating organic compounds in landfill leachates, a pretreatment method for the analysis of organic components is the important step. In this paper, the landfill leachates were extract with liquid-liquid extraction (LLE) and solid-phase microextraction (SPE), respectively. The effect of different extraction methods...
Cunninghamia lanceolata is medicinal plant in South China, and its wood extractives are greatly applied in the therapy and protection of human diseases. Therefore, the nano biomedical components of the acetic ether extractives of Cunninghamia lanceolata biology were studied by Py-GC/MS to find new specific drug. 93 compounds of the extractives were identified. The main constituents were cedrol (18...
In order to determine the effect of the amido and hydroxyl of chitosan on antioxidant activity, a series of N-deacetylated chitosan with a degree of deacetylation (D.D.) ranging from 45% to 95% were prepared using region selective N-acetylation of chitosan. Their carboxymethyl derivatives (CMC) were also synthesized according to previous method. The antioxidant activity was evaluated on the basis...
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