Chem. J. Chinese Universities ›› 1993, Vol. 14 ›› Issue (9): 1218.

• Articles • Previous Articles     Next Articles

On-Line Column Preconcentration and Determination of Trace Elements with T(4-TAP)P as the Derivation Agent by Flow Injection ICP-AES

PENG Xue-Jun, ZHANG Ye-Xu, JIANG Zu-Cheng, ZENG Yun-E   

  1. Department of Chemistry, Wuhan University, Wuhan, 430072
  • Received:1992-12-14 Revised:1993-04-03 Online:1993-09-24 Published:1993-09-24

Abstract: Meso-tetrakis(4-aminophenyl)porphyrin[T(4-TAP)P] used as a suitable chelating reagent was loaded on the mixture of active carbon-silica gel.Experimental parameters such as carrier flow-rate, sampling volume and eluent acidity were optimized.In the buffer solution of NH3 · H2O-NH4C1 at pH9.24, Cu2+, Mn2+, Pb2+, Fe2+, Cd2+, Ni2+ could be preconcen-trated.and then determined by ICP-AES.Its enrichment factors were 6-57.8 with the detection limits of ng/mLlevel, the sampling frequency was 6 times/h.The method has been applied to the analysis of NBSstandard sample of pig kidney with satisfactory results.

Key words: Flow injection, ICP-AES, Meso-tetrakis(4-aminophenyl)porphyrin, Active carbon-silica gel

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