Abstract
The simultaneous determination of chloride and bromide ions in environmental water by X-ray fluorescence spectrometry after precipitation as silver halides in the presence of ammonium nitrate was developed. Calibration curves for chloride and bromide ions were linear from 0.2 to 7.5mg/l(10-375μg/50ml) and from 0.0025 to 1.0mg/l(0.125-50μg/50ml), respectively. The relative standard deviations were less than 3% for both ions. To clarify the effect of bromide ion in environmental water on trihalomethane (THM) formation during a water treatment with chlorine, the concentrations of the chloride and bromide ions in rain- and river-water samples were measured by the present method.
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