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- W335020917 abstract "To improve the carbon recovery yield of chemical pretreatment in soil and sediment for age dating using AMS (Accelerator Mass Spectrometry), we have developed ultrasonic method in chemical pretreatment to replace with stirring method which has been generally used in each step of humic acid extraction for soil and sediment samples. Extraction conditions such as ultrasonic power, temperature and reaction time have been optimized. Six times higher carbon recovery yield could be obtained from low carbon content samples using ultrasonic method. We also compared the dating results by AMS obtained using ultrasonic method with the ages of samples treated by the stirring method. It was found that this new method could be applied to the pretreatment process of low carbon content samples for AMS age dating without effects on the dated ages, and with highly improved carbon recovery yields." @default.
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- W335020917 date "2009-01-01" @default.
- W335020917 modified "2023-09-28" @default.
- W335020917 title "Development of humic acid extraction method in soil and sediment using ultrasonic for 14 C dating" @default.
- W335020917 hasPublicationYear "2009" @default.
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