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XANES Investigation of Chromium Valence State in Yeast Biomass

  • Chromium valence states in yeast biomass are investigated by X-ray absorption near-edge structure spectroscopy (XANES) using an upgraded experimental method. The main advantage of this new XANES method is to record the transmission and fluorescence experimental data simultaneously in a same ion chamber. Such method is very convenient to analyze a series of unknown chromium valence state samples (e.g.relatively low Cr concentration with fluorescence mode) comparing with a standard sample (Cr2O3) using transmission mode, in order to avoid systematic error associated to the uncertainty of the edge energy induced by the different experimental operating condition. The experimental results show that in yeast biomass almost all Cr(Ⅵ) is reduced to Cr(Ⅲ) addressing the potential use of biomass for chromium reduction.
  • [1] . Muter O et al.Process Biochemistry,2001,37 :505-5112. CHAI Z F,ZHU H M.An Introduction to Trace Element Chemistry.Beijing : Atomic Energy Press,1994.251-252 (in Chinese)(柴之芳,祝汉民.微量元素化学概论.北京: 原子能出版社,1994.251-252)3. Frank E,Huggins,Mohammad Najih.Fuel,1999,78 :233-2424. Ronald R,Patterson,Scott Fendorf.Environmental Science Technol2ogy,1997,31(7) :2039-20445. MA L D,YANG F J.An Introduction to Synchrotron Radiation Appli2cation.Shanghai :Fudan University Press,2001.149-151 (in Chinese)(马礼敦,杨福家.同步辐射应用概论,上海:复旦大学出版社,2001.149-151)6. Rehr J J,Albers R C.Reviews of Modem Physics,2000,72(3) :6217. WANGQ W,LIU W H.Theory and Application of X2ray AbsorptionFine Structure.Beijing :Science Press,1994 (in Chinese)(王其武,刘文汉.X射线吸收精细结构及其应用.北京:科学出版社,1994)8. Norman D,Garg KB.Solid State Commun,1995,56 :8959. Sipr O.J.Phys.Condens,1992,4 :938910. Grioni M,Czyzyk M T.Phys.Rev.,1989,B39 :488611. Waychuns G A,Michael J.Apted.Physics and Chemistry of Miner2als,1983,10 :1-912. WU Z Y,Jollet F.J.Phys.Condens.Matter,1998,10 :8083-809213. Bianconi A,Garcia J.Physical Review,1991,B43(9) :6885-689214. WU Z Y,XIAN D C.Applied Physics Letters,2001,79(12) :191815. Bocharov S,Th.Kirchner.Physical Review,2001,B63 :1-916. Lytle F W,Greegor R B.Physical Review,1988,B37(4) :155117. WU Z Y,Natoli C R,Paris E et al.Applied Physics Letters,2001,79 (12) :1918-192018. WU Z Y,Natoli C R,Marcelli A et al.Unified Interpretation ofPreedge X2ray Absorption Fine Structures in 3d Transition Metal Com2pounds.In :Marcelli A,Bianconi A,Saini N L ed.New York :AIPConference Proceedings 652,2003.49719. WU Z Yet al.Physical Review,1997,B55(4) :2570-257720. Zayed A,Mel Lytle C,QIANJ H et al.Planta,1998,206 :293-299
  • [1] . Muter O et al.Process Biochemistry,2001,37 :505-5112. CHAI Z F,ZHU H M.An Introduction to Trace Element Chemistry.Beijing : Atomic Energy Press,1994.251-252 (in Chinese)(柴之芳,祝汉民.微量元素化学概论.北京: 原子能出版社,1994.251-252)3. Frank E,Huggins,Mohammad Najih.Fuel,1999,78 :233-2424. Ronald R,Patterson,Scott Fendorf.Environmental Science Technol2ogy,1997,31(7) :2039-20445. MA L D,YANG F J.An Introduction to Synchrotron Radiation Appli2cation.Shanghai :Fudan University Press,2001.149-151 (in Chinese)(马礼敦,杨福家.同步辐射应用概论,上海:复旦大学出版社,2001.149-151)6. Rehr J J,Albers R C.Reviews of Modem Physics,2000,72(3) :6217. WANGQ W,LIU W H.Theory and Application of X2ray AbsorptionFine Structure.Beijing :Science Press,1994 (in Chinese)(王其武,刘文汉.X射线吸收精细结构及其应用.北京:科学出版社,1994)8. Norman D,Garg KB.Solid State Commun,1995,56 :8959. Sipr O.J.Phys.Condens,1992,4 :938910. Grioni M,Czyzyk M T.Phys.Rev.,1989,B39 :488611. Waychuns G A,Michael J.Apted.Physics and Chemistry of Miner2als,1983,10 :1-912. WU Z Y,Jollet F.J.Phys.Condens.Matter,1998,10 :8083-809213. Bianconi A,Garcia J.Physical Review,1991,B43(9) :6885-689214. WU Z Y,XIAN D C.Applied Physics Letters,2001,79(12) :191815. Bocharov S,Th.Kirchner.Physical Review,2001,B63 :1-916. Lytle F W,Greegor R B.Physical Review,1988,B37(4) :155117. WU Z Y,Natoli C R,Paris E et al.Applied Physics Letters,2001,79 (12) :1918-192018. WU Z Y,Natoli C R,Marcelli A et al.Unified Interpretation ofPreedge X2ray Absorption Fine Structures in 3d Transition Metal Com2pounds.In :Marcelli A,Bianconi A,Saini N L ed.New York :AIPConference Proceedings 652,2003.49719. WU Z Yet al.Physical Review,1997,B55(4) :2570-257720. Zayed A,Mel Lytle C,QIANJ H et al.Planta,1998,206 :293-299
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HU Rong, WU Zi-Yu, LIU Jing, XIE Ya-Ning, HU Tian-Dou, ZHANG Jing, FENG Wei-Yue and CHAI Zhi-Fang. XANES Investigation of Chromium Valence State in Yeast Biomass[J]. Chinese Physics C, 2004, 28(1): 100-103.
HU Rong, WU Zi-Yu, LIU Jing, XIE Ya-Ning, HU Tian-Dou, ZHANG Jing, FENG Wei-Yue and CHAI Zhi-Fang. XANES Investigation of Chromium Valence State in Yeast Biomass[J]. Chinese Physics C, 2004, 28(1): 100-103. shu
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Received: 2003-04-10
Revised: 1900-01-01
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XANES Investigation of Chromium Valence State in Yeast Biomass

    Corresponding author: WU Zi-Yu,
  • Institute of High Energy Physics,CAS,Beijing 100039,China

Abstract: Chromium valence states in yeast biomass are investigated by X-ray absorption near-edge structure spectroscopy (XANES) using an upgraded experimental method. The main advantage of this new XANES method is to record the transmission and fluorescence experimental data simultaneously in a same ion chamber. Such method is very convenient to analyze a series of unknown chromium valence state samples (e.g.relatively low Cr concentration with fluorescence mode) comparing with a standard sample (Cr2O3) using transmission mode, in order to avoid systematic error associated to the uncertainty of the edge energy induced by the different experimental operating condition. The experimental results show that in yeast biomass almost all Cr(Ⅵ) is reduced to Cr(Ⅲ) addressing the potential use of biomass for chromium reduction.

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