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Spectrophotometric Determination of gallium(III) With Phenylfluorone in the Presence of Hexadecylpyridinium Bromide and Pyridine

Spectrophotometric Determination of gallium(III) With Phenylfluorone in the Presence of Hexadecylpyridinium Bromide and Pyridine

S Sakuraba

Talanta. 1990 Jun;37(6):637-40.

PMID: 18964992

Abstract:

Phenylfluorone reacts with gallium in the presence of hexadecylpyridinium bromide and pyridine to form a water-soluble chelate with an absorption maximum at 570 nm and constant absorbance in the pH range 4.0-5.5. At this wavelength, Beer's law is obeyed up to 4.3 x 10(-6)M gallium. The sensitivity is very high and the molar absorptivity is 1.48 x 10(5) 1.mole(-1).cm(-1). The chelate has been utilized in the determination of gallium at the mug level. The ratio of gallium to phenylfluorone in the complex is 1:2.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP13450889	Gallium(III) bromide		13450-88-9	Price

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