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2006•Chinese Journal of Spectroscopy LaboratoryRequires access

Catalytic Spectrophotometric Determination of Trace Nitrite with Potassium Bromate-Scarlet 3B system

Yan Xiao

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Abstract

A new catalytic spectrophotometric method for determination of trace nitrite was developed based on the catalytic effect of NO-_2 to the oxidation of scarlet 3B by potassium bromate in H_3PO_4 medium.The detection limit is 1.36×10 -3 μg/mL in the linear range of 0.012—0.080μg/mL with the recoveries between 98.8%—101.0%.The method was applied to direct determination of nitrite in water with satisfactory results.

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What this paper is about

A new catalytic spectrophotometric method for determination of trace nitrite was developed based on the catalytic effect of NO-_2 to the oxidation of scarlet 3B by potassium bromate in H_3PO_4 medium.The detection limit is 1.36×10 -3 μg/mL in the linear range of 0.012—0.080μg/mL with the recoveries between 98.8%—101.0%.The method was applied to direct determination of nitrite in water with satisfactory results.

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Available abstract

A new catalytic spectrophotometric method for determination of trace nitrite was developed based on the catalytic effect of NO-_2 to the oxidation of scarlet 3B by potassium bromate in H_3PO_4 medium.The detection limit is 1.36×10 -3 μg/mL in the linear range of 0.012—0.080μg/mL with the recoveries between 98.8%—101.0%.The method was applied to direct determination of nitrite in water with satisfactory results.

Key concepts: Potassium bromate, Nitrite, Bromate, Chemistry, Catalysis, Detection limit, Linear range, Potassium

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