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2005•Journal of Huaihai Institute of TechnologyRequires access

A Study on Fading Photometric Determination of Bromate with Isatin

Ying‐Hong Liu

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Abstract

A new photometric method for the determination of micro-amounts of bromate is proposed based on the oxidation of isatin by bromate in HC1 medium. The optimal conditions were studied. The maximum absorption of isatin lies at 610 nm. Beer's law was obeyed when the bromate concentration is within the range of 3-40 μg/10 mL, the determined regressive equation was A610=0. 2080ρ+0.0816, the related coefficient was 0. 9937 and the molar absorption coefficient was 3. 7×104. The proposed method has been applied to the determination of micro-amounts of in chemical reagents with satisfactory results.

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A new photometric method for the determination of micro-amounts of bromate is proposed based on the oxidation of isatin by bromate in HC1 medium. The optimal conditions were studied. The maximum absorption of isatin lies at 610 nm. Beer's law was obeyed when the bromate concentration is within the range of 3-40 μg/10 mL, the determined regressive equation was A610=0. 2080ρ+0.0816, the related coefficient was 0. 9937 and the molar absorption coefficient was 3. 7×104. The proposed method has been applied to the determination of micro-amounts of in chemical reagents with satisfactory results.

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Available abstract

A new photometric method for the determination of micro-amounts of bromate is proposed based on the oxidation of isatin by bromate in HC1 medium. The optimal conditions were studied. The maximum absorption of isatin lies at 610 nm. Beer's law was obeyed when the bromate concentration is within the range of 3-40 μg/10 mL, the determined regressive equation was A610=0. 2080ρ+0.0816, the related coefficient was 0. 9937 and the molar absorption coefficient was 3. 7×104. The proposed method has been applied to the determination of micro-amounts of in chemical reagents with satisfactory results.

Key concepts: Bromate, Isatin, Reagent, Molar absorptivity, Chemistry, Analytical Chemistry (journal), Absorption (acoustics), Chromatography

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