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《ANALYTICAL LABORATORY》 1999-03
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Determination of Micro Amounts of Copper in Chinese Medicinal Herbs by Suspension Sample IntroductionFlame Atomic Absorption Spectrometry

LIU Lihang,YAN Feng and WU Lixang(Department of Applied Chemistry,Fushun Petroleum Institute,Fushun 113001),,  
he suspension sample introduction technique was applied to flame atomic absorption spectrometry and a new method for rapid determination of micro amounts of copper in Chinese medicinal herbs has been developed.The samples were ground down and then made into agar suspension.Using the blank solution as reference ,the suspension was injected into airacetylene flame and the standard addition method was used to determine copper with background correction of deuterium lamp.The determination results were consistent with those obtained by the ashing method.The relative error was less than 3.6%.RSD was less than 2.5%.The detection limit is 0.057mg/L.
【CateGory Index】: R284.1
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