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2003•Analytical LaboratoryRequires access

Determination of trace hydroquinone by catalytic kinetic spectrophotometry

Xiang Huang

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Abstract

Hydroquinone could catalyze the discoloration of indigo carmine by potassium periodate in KH2PO4Na2HPO4 medium. Based on this, a new method for the determination of trace hydroquinone was established using catalytic kinetic spectrophotometry. Its linear ranges were 0.04～0.18 μg/mL and 0.28～0.54 μg/mL with the detection limit of 6.8×10-6 g/L. It was applied to the determination of hydroquinone in waste development reagent with good results.

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What this paper is about

Hydroquinone could catalyze the discoloration of indigo carmine by potassium periodate in KH2PO4Na2HPO4 medium. Based on this, a new method for the determination of trace hydroquinone was established using catalytic kinetic spectrophotometry. Its linear ranges were 0.04～0.18 μg/mL and 0.28～0.54 μg/mL with the detection limit of 6.8×10-6 g/L. It was applied to the determination of hydroquinone in waste development reagent with good results.

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Available abstract

Hydroquinone could catalyze the discoloration of indigo carmine by potassium periodate in KH2PO4Na2HPO4 medium. Based on this, a new method for the determination of trace hydroquinone was established using catalytic kinetic spectrophotometry. Its linear ranges were 0.04～0.18 μg/mL and 0.28～0.54 μg/mL with the detection limit of 6.8×10-6 g/L. It was applied to the determination of hydroquinone in waste development reagent with good results.

Key concepts: Hydroquinone, Chemistry, Potassium periodate, Indigo carmine, Spectrophotometry, Detection limit, Reagent, Catalysis

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