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2003•Chinese Journal of Spectroscopy LaboratoryRequires access

Spectrophotometric Determination of Microamount of Chlorine Dioxide with 3,3′,5,5′-Tetramethylbenzidine

Zou Ling

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Abstract

A new method for the determination of chlorine dioxide with 3,3′,5,5′-Tetramethylbenzidine (TMB) was proposed.In a medium of HCl(pH≤2),its absorption maximum is at 450nm with an apparent molar absorptivity is 1.04×10 5L·mol -1·cm -1.Beer's law is obeyed in the range of 0.01-0.6mg·L -1 for chlorine dioxide.The method has been applied to the determination of chlorine dioxide in water samples with satisfactory results.

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A new method for the determination of chlorine dioxide with 3,3′,5,5′-Tetramethylbenzidine (TMB) was proposed.In a medium of HCl(pH≤2),its absorption maximum is at 450nm with an apparent molar absorptivity is 1.04×10 5L·mol -1·cm -1.Beer's law is obeyed in the range of 0.01-0.6mg·L -1 for chlorine dioxide.The method has been applied to the determination of chlorine dioxide in water samples with satisfactory results.

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Available abstract

A new method for the determination of chlorine dioxide with 3,3′,5,5′-Tetramethylbenzidine (TMB) was proposed.In a medium of HCl(pH≤2),its absorption maximum is at 450nm with an apparent molar absorptivity is 1.04×10 5L·mol -1·cm -1.Beer's law is obeyed in the range of 0.01-0.6mg·L -1 for chlorine dioxide.The method has been applied to the determination of chlorine dioxide in water samples with satisfactory results.

Key concepts: Chlorine dioxide, Molar absorptivity, Chlorine, Chemistry, Absorption (acoustics), Molar ratio, Inorganic chemistry, Analytical Chemistry (journal)

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