Simultaneous Determination of Mercury and Lead by Twice Dual-Wavelength Spectrophotometric Method

Chinese Journal of Applied Chemistry ›› 1994, Vol. 0 ›› Issue (3): 86-88.

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Simultaneous Determination of Mercury and Lead by Twice Dual-Wavelength Spectrophotometric Method

Zhang Guizhu, Qu Jiaxin, Yang Wanlong, He Xiwen, Shi Huiming

Department of Chemistry, Nankai University, Tianjin 300071

Received:1993-04-20 Revised:1993-09-18 Published:1994-06-10 Online:1994-06-10

Abstract

Abstract: A sensitive twice dual-wavelength spectrophoto-metric method has been developed for the simultaneous determination of trace Hg and Pb,based on the formation of colour complexes of the two metals with meso-tetra-(p-trimethylammonium phenyl)porphyrin in 0.02mol/L NaOH medium. The molar absorptivities are 4.59?10⁵ and 4.32?10⁵L·mol^-1·cm^-1 for Pb and Hg respectively. The method gave satisfactory restilts in simultaneous determination of Pb and Hg in the tap water.

Key words: twice dual-wavelength spectrophotometry, Hg, Pb

Zhang Guizhu, Qu Jiaxin, Yang Wanlong, He Xiwen, Shi Huiming. Simultaneous Determination of Mercury and Lead by Twice Dual-Wavelength Spectrophotometric Method[J]. Chinese Journal of Applied Chemistry, 1994, 0(3): 86-88.

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Simultaneous Determination of Mercury and Lead by Twice Dual-Wavelength Spectrophotometric Method

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