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Colour Reaction of 2-Hydroxy-3-Methoxyphenylfluorone with Aluminum and Its Application

Qijun Song

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Abstract

The colour reaction of aluminum with 2-hydroxy-3-methoxyphenyl fluorone(HMPF) has been studied.In the presence of CTMAB at pH 6.30 acetic acid ammonia medium,aluminum(Ⅲ) reacts with 2-hydroxy-3-methoxyphenyl-fluorone to form a stable complex.The maximum absorption of the complex is at at 559 nm,and molar absorptivity is 1.29×105.Beer's law is obeyed for 0～0.32 μg/mL.The method is applied to determination of aluminum(Ⅲ) in quartz samples for satisfactory results.

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The colour reaction of aluminum with 2-hydroxy-3-methoxyphenyl fluorone(HMPF) has been studied.In the presence of CTMAB at pH 6.30 acetic acid ammonia medium,aluminum(Ⅲ) reacts with 2-hydroxy-3-methoxyphenyl-fluorone to form a stable complex.The maximum absorption of the complex is at at 559 nm,and molar absorptivity is 1.29×105.Beer's law is obeyed for 0～0.32 μg/mL.The method is applied to determination of aluminum(Ⅲ) in quartz samples for satisfactory results.

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Available abstract

The colour reaction of aluminum with 2-hydroxy-3-methoxyphenyl fluorone(HMPF) has been studied.In the presence of CTMAB at pH 6.30 acetic acid ammonia medium,aluminum(Ⅲ) reacts with 2-hydroxy-3-methoxyphenyl-fluorone to form a stable complex.The maximum absorption of the complex is at at 559 nm,and molar absorptivity is 1.29×105.Beer's law is obeyed for 0～0.32 μg/mL.The method is applied to determination of aluminum(Ⅲ) in quartz samples for satisfactory results.

Key concepts: Molar absorptivity, Color reaction, Chemistry, Aluminium, Acetic acid, Ammonia, Absorption (acoustics), Spectrophotometry

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