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《Food Science》 2010-18
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Determination of Trace Elements in Ginkgo Leaves by Flame Atomic Absorption Spectrometry Coupled with Suspension Injection and Ultrasound-assisted Extraction

LIN Jian-yuan,HU Kan-kan,GU Long-fei(College of Biological and Environmental Science,Zhejiang Wanli University,Ningbo 315100,China)  
Flame atomic absorption spectrometry(FAAS) coupled with ultrasound-assisted extraction and suspension sample injection was used to determine the contents of trace elements in ginkgo leaves.FAAS working parameters,suspension medium and length of ultrasonic treatment time were optimized and the eliminating effect of SrCl2 addition on the disturbance from Al,Si and P was evaluated.Meanwhile,two analytical figures of merit,namely limit of detection and spike recovery,were characterized.The relative standard deviation of each element was less than 2.2% and recovery rate of each sample was in the range of 97.8% to 104%.The method is simple,rapid and accurate and consequently,provides a promising method for the determination of trace elements in ginkgo leaves.
【Fund】: 浙江省科技厅项目(2009C35011)
【CateGory Index】: R284
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