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2005•Journal of Zhaotong Teacher's CollegeRequires access

Study on Solid Phase Extraction and Spectrophotometric Determination of Mercury in Tobacco and Tobacco Additive with p-Carboxylphenylazo-Thiorhodanine

Ying Zhang, Guangyu Yang, Chengcong Zhang

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Abstract

The color reaction of mercury with p-carboxylphenylazo-thiorhodanine (CPATR) was studied. In the presence of pH=3.5 buffer solution and Tween-80 medium, CPATR can react with mercury (Ⅱ) to form a stable 2∶1 complex. This complex can be extracted by Waters Sep-Pak-C (18) cartridge and eluted the retained chelate by DMF.The molarabsorptivity is 8 70×10~(3 )m~2/mol at 535 nm. Beer's law is obeyed in range of 0.05~4 0 mg/L. This method can be applied to the determination of mercury in tobacco and its additivewith satisfactory results.

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What this paper is about

The color reaction of mercury with p-carboxylphenylazo-thiorhodanine (CPATR) was studied. In the presence of pH=3.5 buffer solution and Tween-80 medium, CPATR can react with mercury (Ⅱ) to form a stable 2∶1 complex. This complex can be extracted by Waters Sep-Pak-C (18) cartridge and eluted the retained chelate by DMF.The molarabsorptivity is 8 70×10~(3 )m~2/mol at 535 nm. Beer's law is obeyed in range of 0.05~4 0 mg/L. This method can be applied to the determination of mercury in tobacco and its additivewith satisfactory results.

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Available abstract

The color reaction of mercury with p-carboxylphenylazo-thiorhodanine (CPATR) was studied. In the presence of pH=3.5 buffer solution and Tween-80 medium, CPATR can react with mercury (Ⅱ) to form a stable 2∶1 complex. This complex can be extracted by Waters Sep-Pak-C (18) cartridge and eluted the retained chelate by DMF.The molarabsorptivity is 8 70×10~(3 )m~2/mol at 535 nm. Beer's law is obeyed in range of 0.05~4 0 mg/L. This method can be applied to the determination of mercury in tobacco and its additivewith satisfactory results.

Key concepts: Mercury (programming language), Chemistry, Cartridge, Solid phase extraction, Elution, Chelation, Chromatography, Nuclear chemistry

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Study on Solid Phase Extraction and Spectrophotometric Determination of Mercury in Tobacco and Tobacco Additive with p-Carboxylphenylazo-Thiorhodanine — Research Paper | ScholarLens