Determination Of Bromide In Waters Research Articles

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Spectrophotometric determination of bromide in water using the multisyringe flow injection analysis technique coupled to a gas-diffusion unit

Spectrophotometric determination of bromide in water using a gas-diffusion unit.

Analytical Methods

Jan 1, 2015
Kaewta Danchana + 4

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Field determination of bromide in water

A simple and rapid colorimetric determination for bromide in water, especially useful for field test procedures, is described. The applicable concentration range is 0.06-5.0 mg/L bromide. The bromide is oxidized by peroxymonosulfate (Oxone) to bromine, which then reacts with phenol red at pH 4.6-4.7. The developed yellow-to-blue color is measured colorimetrically at 590 nm. Fading is avoided by stopping the reaction after color development with thiosulfate. Ammonium sulfate is used to mask chloride interference up to 1000 mg/L concentration.

Analytical Chemistry

Dec 1, 1984
Hajna F Dobolyi

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Automated determination of bromide in waters by ion chromatography with an amperometric detector

An automated ion chromatograph, including a program controller, an automatic sampler, an integrator, and an amperometric detector, was used to develop a procedure for the determination of bromide in rain water and many ground waters. Approximately 10 min is required to obtain a chromatogram. The detection limit for bromide is 0.01 mg l −1 and the relative standard deivation is <5% for bromide concentrations between 0.05 and 0.5 mg l −1. Chloride interferes if the chloride-to-bromide ratio is greater than 1 000:1 for a range of 0.01–0.1 mg l −1 bromide; similarly, chloride interferes in the 0.1–1.0 mg l −1 range if the ratio is greater than 5 000:1. In the latter case, a maximum of 2 000 mg l −1 of chloride can be tolerated. Recoveries of known concentrations of bromide added to several samples, ranged from 97 to 110%.