Simultaneous determination of zinc and mercury with 5,10,15,20-tetrakis(3-chloro-4-sulfophenyl)porphine by differential rate kinetics and flow injection analysis

Autor:	Xue-jun Peng, Jie-Ke Cheng, Qun-kai Mao
Rok vydání:	1994
Předmět:	MERCURE Flow injection analysis medicine.diagnostic_test Chemistry Kinetics Analytical chemistry chemistry.chemical_element Zinc Biochemistry Porphyrin Analytical Chemistry Mercury (element) Absorbance chemistry.chemical_compound Spectrophotometry medicine
Zdroj:	Fresenius' Journal of Analytical Chemistry. 348:644-647
ISSN:	1618-2650 0937-0633
DOI:	10.1007/bf00325565
Popis:	A rapid and sensitive differential rate kinetic method for the simultaneous and sequential determination of zinc and mercury with 5,10,15,20-tetrakis-(3-chloro-4-sulfophenyl)porphine (m-Cl-TPPS4) has been based on flow injection spectrophotometry. By proper stopped-flow of the merging zone, the metalloporphyrin complexes of zinc and mercury were simultaneously determined at the maximum absorbance wavelength of 425.7 nm with the proportional equation. The relative standard deviations for 1.0 μg/ml zinc and 5.0 μg/ml mercury with 100 μl sampling volume were 0.43% and 0.62%, respectively, for 8 parallel determinations. The calibration graphs were linear over the concentration range 0–3.0 μg Zn/ml and 0–12.0 μg Hg/ml. The method has been applied to the analysis of synthetic water samples with satisfactory recovery.
Databáze:	OpenAIRE
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