Speciation of Fe(II) and Fe(III) in Chinese Yellow Rice Wine Using Direct Immersion Dual-Drop Microextraction Coupled with Graphite Furnace Atomic Absorption Spectrometry (GFAAS)
This work was financially supported by the Key Research and Development Project of Hubei Province (No.2020BBB068), Central Committee Guides Local Science and Technology Development Special Project of Hubei Province (No. 2019ZYYD059) and Nature Science Foundation of Hubei Province (No.2020CFB400).
机构署名：
本校为第一机构
院系归属：
食品科学与工程学院
化学与环境工程学院
摘要：
A new direct immersion dual-drop microextraction (DIDDME) procedure is described for Fe(III) and Fe(II) speciation followed by detection with graphite furnace atomic absorption spectrometry. This method is based upon the selective reaction of 1-(2-pyridylazo)-2-naphthol (PAN) and N-benzoyl-N-phenylhydroxylamine (BPHA) with Fe(II) and Fe(III) to form complexes at pH 1.5. Two solvent drops that contain PAN and BPHA were concurrently immersed in a sample solution for simultaneous separation of Fe(III) and Fe(II), respectively. This method eliminat...
