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Catalytic Spectrophotometric Determination of Nitrite

Xiaoqi Lai

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Abstract

A catalytic kinetic spectrophotometric method for the determination of nitrite is developed ,based on the oxidation of bromocresol green with KBrO_3 at 34～40℃ in 0.05 mol/L H_2SO_4 medium.The results show,at 35℃.The ΔA keeps constant during 10～16 min.The reaction time is 12 min in the determination of nitrite.At 35℃ the linear range and detection limit for nitrite are 0.02～1.2mg/L and 0.007mg/L.The method is applied to the determination of nitrite in waters with satisfactory results.

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What this paper is about

A catalytic kinetic spectrophotometric method for the determination of nitrite is developed ,based on the oxidation of bromocresol green with KBrO_3 at 34～40℃ in 0.05 mol/L H_2SO_4 medium.The results show,at 35℃.The ΔA keeps constant during 10～16 min.The reaction time is 12 min in the determination of nitrite.At 35℃ the linear range and detection limit for nitrite are 0.02～1.2mg/L and 0.007mg/L.The method is applied to the determination of nitrite in waters with satisfactory results.

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Available abstract

A catalytic kinetic spectrophotometric method for the determination of nitrite is developed ,based on the oxidation of bromocresol green with KBrO_3 at 34～40℃ in 0.05 mol/L H_2SO_4 medium.The results show,at 35℃.The ΔA keeps constant during 10～16 min.The reaction time is 12 min in the determination of nitrite.At 35℃ the linear range and detection limit for nitrite are 0.02～1.2mg/L and 0.007mg/L.The method is applied to the determination of nitrite in waters with satisfactory results.

Key concepts: Nitrite, Detection limit, Bromocresol green, Chemistry, Linear range, Catalysis, Spectrophotometry, Inorganic chemistry

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