Chem. J. Chinese Universities ›› 1995, Vol. 16 ›› Issue (1): 47.

• Articles • Previous Articles     Next Articles

Studies on Flow-injection Stopped-flow Florescence Kinetic Method for Determination of Trace Iron

HUANG Hou-Ping, CAI Ru-Xiu, ZENG Yun-E, GAO Deng-Yun   

  1. Department of Chemistry, Wuhan University, Wuhan, 430072
  • Received:1994-03-03 Revised:1994-07-20 Online:1995-01-24 Published:1995-01-24

Abstract: A new flow-injection stopped-flow fluorescence kinetic method for determination of trace iron(Ⅲ) was proposed. The method is based on monitoring the binary fluorescence complex formation of Fe(Ⅲ) with 3,5-dibro mosalicylfluorone(DBSAF) at 510 nm/510 nm in an acidic medium.The linearity range is between 0.020 and 0.250 μg/mLwith a correction coefficient of 0.999 and a detection limitation of 10 ng/mL. The method has been ap plied to the determination of Fe(Ⅲ)in alluminum alloy and peach leaves, the results are in agreement with ICPmethod and standard reference value, respectively.

Key words: Flow-injection stopped-flow technique, Fluorescence kinetic anaiysis, Iron(Ⅲ), 3, 5-Dibromosalicylfluorone

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