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- W2381473763 abstract "This paper proposed a new method to determine the total flavonoids in the extraction of celery leaves by fourier transform infrared spectrometry.The method is based on the characteristic absorption of carbonyl at 1 700-1 600 cm-1 of IR spectra.According Lambert-Beer's law and using area quantitative method,total flavonoids was determined.The result was consistent with that obtained using UV-Vis spectrophotometry.The content of total flavonoids in the extraction was 86.62%.Precision and accuracy were examined by repeatability and recovery tests.The RSD(n=6)was 3.12,and recoveries ranged from 92.90% to 104.06%.The regression coefficient for the liner equations was 0.9822 and average absorption coefficient was 2.382×103." @default.
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- W2381473763 date "2008-01-01" @default.
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- W2381473763 title "Quantitative Determination of Total Flavonoids in the Extraction of Celery Leaves by IR" @default.
- W2381473763 hasPublicationYear "2008" @default.
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