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

Abstract

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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PENG Xue-Jun, ZHANG Ye-Xu, JIANG Zu-Cheng, ZENG Yun-E . On-Line Column Preconcentration and Determination of Trace Elements with T(4-TAP)P as the Derivation Agent by Flow Injection ICP-AES[J]. Chem. J. Chinese Universities, 1993, 14(9): 1218.

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

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